How To Build A Simple Robot
Posted on May 29th, 2005 in How To Make a Robot, Projects
This article lists some ideas for starting a simple robot. A good read for beginners.
Do not miss the new up-to-date and detailed How to Build a Robot – Grand Tutorial Series.
Wheels:
You can use wheels from toys or you can buy wheels from a hobby shop they have pneumatic or foam wheels for model aircraft that are very easy to use.
Atom from Basic Micro is mostly compatible with the Basic Stamp but is much better, just to name a few of the things that set it above the Basic Stamp:
A third choice is to buy a Basic compiler; I will be using Basic Micro’s 2840 Combo w/ Pro Compiler. This development board lets you use either 28 or 40 pin PIC’s. I will be using the 5.0 beta Version of the Mbasic compiler which is still in beta the current version is 4.0.3 but the 5.0 should be available by the time we start the programming and updates are free.
Below are some things that make the Atom or Mbasic compiler far superior to the Basic stamp they are speed, Basic interrupts, and hardware pulse width modulation.
The first speed is obvious; you can’t have too much speed. The second Basic interrupts we will use by connecting whiskers so they generate an interrupt if something is bumped and the program will jump to a subroutine that will determine the correct course of action and after it completes that returning to continue the program from where it was when the interrupt was generated.
The third hardware pulse width modulation will really shine if you use gear motors instead of servos. With the Basic Stamp we will just be able to turn the motors on at one speed because we have other things to do. We will not be able to do variable speed but the Atom or a PIC16F876 both have 2 hardware pulse width modulation channels which means we can set the pulse width and it continues until we change or stop it which will give us variable speed.
For gear motors we can use the same HPWM command on the Atom to get a variable speed. The Basic stamp has a PWM command but it is done with software and the Stamp cannot do anything else so it is not really usable for variable motor speed because we will not get smooth movement so all we can do is turn the motor on full speed
Sensors:
We will use infrared obstacle avoidance and bump sensors we will use the PNA4612M it is easy to use and inexpensive you could substitute the infrared detection module from Radio Shack. So what will you need to complete a robot as described in this series of articles? Material for a base a piece of material 8″ x 8″ will be more than enough.
Motors:
You will need 2 motors either servo’s modified for continuous rotation or gear motors. You could also hack a toy that has the motors and the wheels or even legs.
A toy called a Battle Scarab is a good candidate for hacking.
In short, you will need:
For further information on learning how to make a robot, please visit the RobotShop Learning Center. Visit the RobotShop Community Forum in order to seek assistance in building robots, showcase your projects or simply hang-out with other fellow roboticists.
- Wood Depending on the size of your robot plywood may be a good choice it is inexpensive or free and easy to work with simple tools. You can get 1/4″ and 3/8″ plywood at Hardware, Home Improvement, Craft, or Hobby stores. A good place to look for free material is at a Cabinet shop they have lots of scrap too small for their use but perfect for a small robot.
- Aluminium Light weight and moderately easy to work can also be found at Hardware, Home Improvement, Craft, or Hobby stores. You should always be very cautious when working with aluminum as edges can be very sharp and should be sanded or filed to round the edges.
- Plastics Acrylic or Plexiglas are both easy to work and can also be found at Hardware, Home Improvement, Craft, or Hobby stores. High-speed tools should not be used, as they will melt the plastic. When cutting or drilling use low speeds.
- Old CD’s These can be easy to find most people get them in the mail from AOL or Earthlink instead of throwing them away you can use them to make a robot. They can be a little on the brittle side so go easy when you do any cutting or drilling. I will be using Plexiglas from my local home center but you can use whatever material you want.
Motors:
- Servos You can use servos for easy to get gear motors. Hobby shops will usually carry several sizes and brands. You will need to modify them for use there are many sites on the net with different methods; the one I like is detailed at the PARTS website. Servos already have all of the control circuitry built in and are easy to control they have 3 wires signal, +, and ground by pulsing the signal line you can go forward, stop, or backward. Servos are probably the easiest and cheapest way to go but may not be the best for you.
- Gear motors These are available from surplus stores or hobby shops some people modify servos and remove the electronics to use them as gear motors. Gear motors will require control circuitry normally an H-bridge to allow forward and reverse motion and in some cases braking. Gear motors can give the greatest flexibility but at a higher cost compared to servos. Another source for gear motors is the toy section of your locale department store. What you want are the radio control toys that have differential steering, meaning they have a separate motor for each side. To turn left they go forward on the right motor and turn off the left motor and do the opposite to turn right. The really good cars will turn right by going backward on the right motor and forward on the left this will allow a vehicle to almost turn on a dime. If you use gear motors you will need to devise a method to mount the wheels I will be using a toy for my example.
Wheels:
You can use wheels from toys or you can buy wheels from a hobby shop they have pneumatic or foam wheels for model aircraft that are very easy to use.
Power System:
Batteries You will need to decide what type of batteries to use. It can quickly become very expensive replacing batteries. Rechargeable batteries are best; there are a number of different types to choose from. Electronic supply stores or Hobby shops are good places to look, you will need batteries and a charger to charge them with. Power supply We will need a voltage regulator to drop the voltage from the battery to the 5 volts needed by the Microcontroller and other parts of the Brain for the robot. I will cover using two different voltage regulators both are available FREE from National Semiconductor as samples. Each part has its good and bad points: LM2825 Integrated Power Supply 1A DC-DC Converter is a complete switching power supply on a 24 pin DIP although a little large it requires no other components and has an efficiency of 80%. It does require at least 7 volts on the input but your batteries will last much longer than with a linear regulator. LM2940 1A Low Dropout Regulator is a linear regulator in a TO 220 package it requires a couple of filter capacitors it is not as efficient as the LM2825 the big up point is it only requires 5.5 volts input to give a regulated 5 volts out. For the brain, lets have a look at three different microcontroller’s. I will admit I am bias when it comes to Basic Micro products as I have been using them for quit a while now and have always been very happy with the products and the support.
Atom from Basic Micro is mostly compatible with the Basic Stamp but is much better, just to name a few of the things that set it above the Basic Stamp:
- 8k of program space
- IDE for programming
- ICD for in circuit debugging lets you watch your program run
- Floating point 32×32 bit math allows you to do real math. In case you don’t now it 5/2=2 to a Basic stamp but to the Atom 5/2=2.5
- Interrupts (Up to 14 Sources) allow the Atom to stop where it is in a program and jump to another part of a program and when finished go back where it came from based on an event either internal or external.
- Analogue to Digital Converter 4 10 bit analog to digital converters.
Cost:
Basic Micro Atom Module $59.95 Atom Combo $129.95 Parallax BASIC Stamp 2 Module $49.00 BS2 Starter Kit with Board of Education $159.00 You could also just buy the module and a solderless breadboard or piece of perf board to build on instead of a development board and save a little money.
A third choice is to buy a Basic compiler; I will be using Basic Micro’s 2840 Combo w/ Pro Compiler. This development board lets you use either 28 or 40 pin PIC’s. I will be using the 5.0 beta Version of the Mbasic compiler which is still in beta the current version is 4.0.3 but the 5.0 should be available by the time we start the programming and updates are free.
Below are some things that make the Atom or Mbasic compiler far superior to the Basic stamp they are speed, Basic interrupts, and hardware pulse width modulation.
The first speed is obvious; you can’t have too much speed. The second Basic interrupts we will use by connecting whiskers so they generate an interrupt if something is bumped and the program will jump to a subroutine that will determine the correct course of action and after it completes that returning to continue the program from where it was when the interrupt was generated.
The third hardware pulse width modulation will really shine if you use gear motors instead of servos. With the Basic Stamp we will just be able to turn the motors on at one speed because we have other things to do. We will not be able to do variable speed but the Atom or a PIC16F876 both have 2 hardware pulse width modulation channels which means we can set the pulse width and it continues until we change or stop it which will give us variable speed.
For gear motors we can use the same HPWM command on the Atom to get a variable speed. The Basic stamp has a PWM command but it is done with software and the Stamp cannot do anything else so it is not really usable for variable motor speed because we will not get smooth movement so all we can do is turn the motor on full speed
Sensors:
We will use infrared obstacle avoidance and bump sensors we will use the PNA4612M it is easy to use and inexpensive you could substitute the infrared detection module from Radio Shack. So what will you need to complete a robot as described in this series of articles? Material for a base a piece of material 8″ x 8″ will be more than enough.
Motors:
You will need 2 motors either servo’s modified for continuous rotation or gear motors. You could also hack a toy that has the motors and the wheels or even legs.
A toy called a Battle Scarab is a good candidate for hacking.
In short, you will need:
- 2 Wheels
- Batteries and a holder if needed you will need between 6 and 12 volts depending on what motors and regulator you use. Servos will run fine on 6 volts.
- A voltage regulator LM2825 or a LM2940
- A microcontroller ATOM, Basic Stamp or PIC16F876
- Infrared detection module you will need 1 or more we will go more into these later.
- You will need a development board a solderless breadboard or perfboard to build on.
- If you are using gear motors, you will also need a motor controller either a L293DNE Dual H Bridge with diodes or two 3952 Full-Bridge PWM Motor Drivers available from Alegro as ree samples.
- http://www.national.com/pf/LM/LM2825.html
- http://www.national.com/pf/LM/LM2940.html
- http://www.allegromicro.com/sf/3952/index.htm
For further information on learning how to make a robot, please visit the RobotShop Learning Center. Visit the RobotShop Community Forum in order to seek assistance in building robots, showcase your projects or simply hang-out with other fellow roboticists.Read Similar Posts:
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June 9th, 2008 at 21:16
the build is simple but it works.. can you add more of solar bots and sources of on where can we get small solar panels except calculatrs
June 9th, 2008 at 21:16
IM 11 GOING TO 12 YRS OLD AND WANT TO MEKE A ROBOT HOW?!?!?
June 9th, 2008 at 21:16
for the beetle robot instructions the picture covers some of them do u mind sending me them or something. o and great web page it tells u how to make stuff and not how to order it its awsome hope u can reply
June 9th, 2008 at 21:16
i am 15 and i want to make a simple robot with household stuff i want to make a simple bug
:sigh
June 9th, 2008 at 21:16
Hey Guys, I put together a robot called the “WASP Solderless” and it was very easy and I didn’t need any tools to do it. The cool thing was I still got to work with electronic parts. I’m not sure who sells it.
June 9th, 2008 at 21:16
im in the fourth year of high school and we need to make something for our science investigatory project. our project is based on our physics cubject ang our theme is about electromagnetism. we need help because our deadline is on the last week of the month. :sigh
June 9th, 2008 at 21:16
this site was very amazing…and I get some great information…thank ya very much… :grin
August 3rd, 2008 at 00:58
GOOD
but
pictures of robots made ,shouild hve been displayed
August 6th, 2008 at 11:49
very informative, but also please mention how to program the microcontrollers & using which languages. do c or c++ work?
August 12th, 2008 at 06:22
i wana make a simple robot with simple approach but wana some epert’s help anybody plz help me!!!!!!!!!!!!!1
August 13th, 2008 at 11:07
i m going to participate in a robotic competition and i want to know the procedure for making obstacle avoiding robot.
September 10th, 2008 at 10:58
I am going to make my first and I think this article is going to help me……Thanks….
September 12th, 2008 at 02:55
this site was very amazing…and I get some great information…thank ya very much…
September 30th, 2008 at 01:25
good i like your creativity
September 30th, 2008 at 05:24
i am B.TECH 1st year student i want to make a robot for simple use as “to burn a candel” or pick up a boll etc.
pls tell me required part and oter things to make a robot.
October 22nd, 2008 at 07:14
this site is very good for give a very good information f or build a robot
October 26th, 2008 at 08:35
hey i want to make a b’day card built wid robotics does ny1 can help me out plzz
October 28th, 2008 at 11:46
hey i find this sight very interesting but i can’t find parts. CAN SOMEONE HELP PLEASE!!!! :smile
October 30th, 2008 at 08:44
This is cool. I want to make a simple robot , line follower, pls help,
October 31st, 2008 at 03:43
i m b-tech 2 years std …
this site is good but how we can start to make simple robot….
what is procedure,step by step …
pls help
November 13th, 2008 at 22:32
hey i paying anyone $200,000 if you can teach me how to build robots
November 24th, 2008 at 06:41
hii.. i m studying B.ENGG (HONORS)( 2nd year) in Information technology. i want to build a robot for the tech fest being organized by some other colleges . so can you send me some information regarding which type of robot i should build at this level of my study.
December 1st, 2008 at 11:15
Hello.I am a a6 years old and i want to make a simple robot car.Please help.
December 17th, 2008 at 16:17
hi. i am 12 yrs old and want to make a robot out of a old vacuum cleaner. It still works but does now suck up objects really well. How do I do this?
January 8th, 2009 at 07:55
i wanna know how to make a simple robot out of junk. and i want it to be a bit presentable. i don’t know if that thing works. i guess i have to find out. =)
February 6th, 2009 at 19:39
this is cool
but um make easier to read
its a little hard to read
so yeaaaa
im gonnna try to make it also!
bye
diana
February 15th, 2009 at 07:15
it s cool i got confidence dat i can make a robo in short
February 22nd, 2009 at 05:44
i wanna know on wat basis the motors & DPDT are selectedfor a simple robot
March 11th, 2009 at 01:40
hi.
i wan make simple robots …..wat is the step?????????
May 1st, 2009 at 04:47
good robot . i tried myself
July 27th, 2009 at 01:32
Hai guys I am an iitian i want build an robot . This site gVE ME SOME IDEA TO HAVE SOME INITIATIVE.
July 31st, 2009 at 05:31
the way u explained is good .thanku
September 1st, 2009 at 04:04
now i can make robats thank you
October 1st, 2009 at 09:51
the instruction is very nice. But it will be very nice if any body publish a video of making this robot.
October 10th, 2009 at 22:19
http://letsmakerobots.com/start
heres a site that provides video for making a simple robot!!
October 19th, 2009 at 18:03
very cool website i make a fighting robot and I won a contest
January 11th, 2010 at 09:56
im not so adult but i tried it is very easy to make and it is very cool robot
January 16th, 2010 at 06:04
I give a big thank’s to this side and it give help to me to make a robot .
January 26th, 2010 at 10:18
im 13 years old and i need to build a robot with my friends(were doing a project) but we have no idea where to start!!
were not dumb (:|) but building a robot is hard!! someone help!! :0
February 14th, 2010 at 20:36
this technique is good. bt me my friends are participating in a robotics event. in which we ned to demobilize or throw d other robot out of a small arena. we are looking forward to design that sort of robot which can win the compitition. plz do reply or help us.
February 14th, 2010 at 22:46
OH ! yessssssssssss !
i have made it
a simple robot of wood with simple AC motor
it helps me in transferring only objects like cup of milk @ speed of 2m/min(approx.)
it is a 25 cm robot.
okayyyyyyyyyyyyyyyyyyyyyy!
February 26th, 2010 at 09:24
i will try making one
March 3rd, 2010 at 01:11
Rajat!! Congrats!!
Can we get some help, please??
We’re really inspired by your invention and we need to know the starting point so that we can also get our own robot….
Botime…
March 15th, 2010 at 03:38
hi ia from mumbai thanks to ur sit , it given a greate idea to make a robot ,
March 25th, 2010 at 10:31
im 13 yrs old, im crazy about building robots, but i need someones help PLS help me
April 13th, 2010 at 13:46
Hi i m Rahman i m 13 from Malaysia its good i like that but i think there should be a video so we can simply watch and follow so we can learn easily to build our own robot
April 13th, 2010 at 14:22
Great idea. If anyone wants to put together a building video, I’ll put it on the site. I might even pay you
April 13th, 2010 at 22:03
THIS WEBSITE SHOULD PROVIDE SOME INFORMATION ABOUT PARTS OF ROBOTS SO WE CAN KNOW WHAT IS IT FOR
April 15th, 2010 at 04:55
if more pictures were added it would be more easy to build
May 2nd, 2010 at 00:27
where can i find a servo motor
June 7th, 2010 at 12:41
where can i get servo’s for transmission and lightgates for building a small robot.im living in india
June 18th, 2010 at 21:46
I’m going to build and make my own robot.I would put how to put it on here but I don’t know how too.
But this robot above does look cool. 
June 20th, 2010 at 08:35
Hi I am Bikash from nepal. I am going to make my own robot by using some ideas from here. so thank you
June 23rd, 2010 at 06:30
I am B.TECH student.First i am going to build a simple robot n then a wonderfull one.The information provided by this website is enough in order to build a robo.
June 28th, 2010 at 16:06
hi! i’m a highschool student and i want to make a simple robot for my science fair… pls help me …
July 3rd, 2010 at 01:52
Maybe u should make it more simple, I mean, it is hard to get all that stuff.
Other wise……….. I LOVE It!
Sarah xx
July 28th, 2010 at 10:35
Hai iam studying in Vlll Std . Please tell me how to make a robot with simple things . I want to make it for an exhibition in my school in august
July 28th, 2010 at 10:42
Hi Karthik,
You are lucky, we are about to publish a series of thorough guides on how to build a robot so stay tuned and you will soon have your answer.
Also, for now, you can visit http://www.robotshop.com/learning-center.html for tons of information on how to build a robot.
I Hope this helps!
August 4th, 2010 at 12:57
HI SIR I AM STUDYING B.TECH 2nd YEAR STUDENT. I WANT TO MAKE A SMALL ROBOT.PLEASE TELL ME SIR WHICH COMPONENTS ARE USED AND WHAT IS THE PROCESS TO MAKE THE ROBOS.
August 4th, 2010 at 13:24
Hi Babji,
You are in luck! RobotShop will soon release the “How To Build a Robot” Grand Tutorial (Lesson 1). We project releasing a new lesson roughly every week and we will be welcoming feedback. We will be using the RobotShop Rover as an example as it has all the components (separately) used in making a mobile, autonomous robot.
http://www.robotshop.com/robotshop-rover-arduino-basic-kit-6.html
You can see all the components included here:
http://www.robotshop.com/robotshop-rover-arduino-package-contents.html
August 9th, 2010 at 12:37
dear sir,
i m b tech 2nd year student & i want to learn robitics. first of all i want to know the basic of robotics.its my humble request to u that please suggest me something or guide me how i can learn the robotics.
thankyou
August 13th, 2010 at 01:25
i like this article,I am trying to make this robot at my home ,keep writing.
August 18th, 2010 at 03:18
Hey umm, I Have a battle Scarab and I lost the controller like, 10 years ago so I don’t know what if looks like, I would really appreciate it if you could put up a pic of it? this is the only picture of a battle scarab I have seen at all on the internet
August 18th, 2010 at 10:08
I wanna make simple pick and place ROBBO!!!!!!!!!!
Can you help me?
August 18th, 2010 at 10:12
Hi Ajay,
We can certainly help you, come over to our forum so we can have a lengthier discussion. Anyway, the first think you will need is an effector, such as a robot arm.
August 19th, 2010 at 23:38
super da mapla tis
August 25th, 2010 at 08:29
good
August 27th, 2010 at 00:09
I am a student and i m doing a project for my final year.
My project is about Wifi Controlled robotic car. In this project i want to control a robotic car placed in one wifi zone with the help of the mobile phone.
The robotic car should have a camera which will capture images and send it back to the Mobile phone. Plz help me how should i start with the project. Plz guide me for the various components required for the hardware of the robotic car.
Waiting for your reply.
August 27th, 2010 at 10:42
Hello Rohan,
In order to produce a WiFi Robot, we suggest you use a BlackWidow, coupled with a motor controller and a 2WD or 4WD platform. For mor in depth discussion, please start a tread in our forum.
September 1st, 2010 at 08:30
I wanna make a simple Robot…. Please help me by suggesting procedures
September 2nd, 2010 at 13:37
[...] start from line followers: http://www.kmitl.ac.th/~kswichit/ROBOT/Follower.pdf An AVR-based Robot How To Build A Simple Robot – GoRobotics.net (fallow inside links) How to Build a Robot Tutorial – Society of Robots I like this
Robotics [...]
September 7th, 2010 at 06:52
we are the students of Bsc., Electronics and communication Science, From SRM Arts and Science College. wanted to make a simple robotic project, so we want ur help and details regarding this with in a week……Please
September 16th, 2010 at 10:13
thanks for providing the above information.can u please post some info about how to use microcontrollers and sensors…..
September 20th, 2010 at 05:57
give me some information regarding building of robotics
September 20th, 2010 at 12:23
its good ,make more with latest tech
September 22nd, 2010 at 06:45
i,m going to be a scientist when i grow up . It’s aliiiiiiiiivvvvvveeeeee mmmmmmmmmmmmmmmwwwwwwwwwwwwaaaaaaaaaaahhhhhhhhhhhhaaaaaaaaaaa
September 27th, 2010 at 03:07
Sir i want made a robot like same as human. But i dont know how to control it is brain. Plz anyone help me. Sir what can i do.help me
September 30th, 2010 at 07:53
I am really interested to make a robot and I have never ever made a robot so I need your assistance to make the simplest robot of the earth. Waiting for your favourable reply
October 4th, 2010 at 21:27
i am engineering student interesting in making robots by my own please help me regarding it……….i do not want to use the ready made robots item……
please help me regarding it
October 6th, 2010 at 04:04
I THINK ITS GOOD BUT IT COST TOOMUCH .
U HAVE NOT MENTIONED THE REQUIREMENTS AND ASS WELL ASS STEPS OF MAKING.
October 9th, 2010 at 05:53
nice site, i like making robots , and i try it.
October 12th, 2010 at 00:19
hai iam pradeep 15 going to 16 years old so i wanna to prepare a human type of robo please say me the requirements and sayme me the process kindly
October 13th, 2010 at 08:14
sir,
i want to study about robotics. but now am studing a BCA is this eligible for study a robotics courses?????????? help me to study about robotics.
October 13th, 2010 at 08:16
I am really interested to make a robot and I have never ever made a robot so I need your assistance to make the simplest robot of the earth. Waiting for your favourable reply
October 13th, 2010 at 10:32
i need a simple robot circuit diagram
October 13th, 2010 at 11:44
It is never too late to start learning.
October 13th, 2010 at 11:45
Keep reading the tutorials ans you will be able to make your own.
October 14th, 2010 at 00:39
I will make a cyborg robot i have made it. i just need a chip for its working i am in 10th class any one having any or made any plzzzz inform me
October 14th, 2010 at 06:05
science is a game and we r player and this robots are our equipments
October 17th, 2010 at 01:01
sir i just try but this is very costly
October 18th, 2010 at 06:23
sir my age is 19 and i am very interested in making a robot with good memory power and and it should walk like humans so please give me full information about where should i can buy all parts and how to essemble them. my budget is upto one lakh rupees sir please help me please…waiting for valuable information
October 18th, 2010 at 08:53
parts of robo should be goodly displayed
[WORDPRESS HASHCASH] The poster sent us ’0 which is not a hashcash value.
October 19th, 2010 at 08:40
i am going from 11th to twelfth how can i make a simple robot
October 21st, 2010 at 10:15
i will make it
October 23rd, 2010 at 07:41
i want simple robot diagram, mechanism
October 23rd, 2010 at 08:13
oh man……..its so tufff
October 24th, 2010 at 01:45
laich bhari re baba!!!!!!!!!!
October 28th, 2010 at 20:40
imade a robot its like a real person hes the best buddy ever and his name is george
October 28th, 2010 at 20:42
my robot want to speak
hello my name is george iam wondring yoour trying to make robot like me
October 29th, 2010 at 01:27
it is very useful for many people,bcoz they begun to know how to make the robo. It is very useful for me also thankyou to the team
October 29th, 2010 at 03:31
Sir, i m making stair climbing robot. plzzzzzzzzzz give me some ideas about it.
October 30th, 2010 at 11:08
hey cool but should not show pictures cus wills jjrrrrrrrrrrrrr
October 30th, 2010 at 11:10
good, best, great, cool, super cool,exalenta , go bib gobbed,cant’n its ooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooohhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh yeah
October 30th, 2010 at 11:13
its not late i wnan know grrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr! please
Comp dude
November 1st, 2010 at 08:57
I want to make a simple robot working arm with cheap things………..
November 3rd, 2010 at 04:55
Cool!!!!!!!!!!!!!!!!!!!
November 3rd, 2010 at 07:04
Great lessons looking forward to more
November 3rd, 2010 at 07:05
Great lessons useful waiting for more!
November 3rd, 2010 at 07:34
Hello,Sir. I’m a 2nd yr engg. student. I wanna build a simple manual robot,but i don’t have any idea of doing such.Please help me out.
November 3rd, 2010 at 07:56
i am very much interested in robotics.in future i am going to become an robotic eng.if any one has information about making a robo.please send it to my email id
prakashadarsh77@gmail.com
November 7th, 2010 at 12:18
sir i wanna make a simple robot for my exhibution.As it is my 1st exhibit-i m very anxious for it .plz do let me know if you have a simple model.
November 8th, 2010 at 05:10
i am very interested in making new things.i like physics & i have thought to make a robot out of household items.if anybody has any information about making a robot out of household things ,please send it to me
my id is gandhi.rashil@gmail.com
November 9th, 2010 at 10:28
hai i want to become arobotics
November 10th, 2010 at 17:50
You might want then to take a look at the How to Make a Robot section. If you have any further question, if would be a good idea to ask around in the forum.
November 12th, 2010 at 23:21
great, i like it but u should add tutioral video,
November 13th, 2010 at 04:31
I WANT TO PREPARE HUMAN TYPE OF ROBO SO PLEASE TELL ME THE PROCIGER
November 29th, 2010 at 09:24
oh oh oh tooooooooooooo tough
November 30th, 2010 at 07:13
hoooooooooooooooo its 222222222222222222222222222 toughhhhhhhhhh
December 14th, 2010 at 12:29
Hiii… I wanna make a robot, for a techfest in mah clg, for robosoccer…. Pls help me ….
December 15th, 2010 at 17:37
man…all that and it’s simple?!!!!what do they think the peopel science geeks?!
December 16th, 2010 at 00:15
I am 13 years old & I want to make simple small 1 feet robot but it easy, cheap & life-more
December 16th, 2010 at 18:09
wow. last time i checked simple was a couple sentences.
December 16th, 2010 at 18:14
all i want is to know how to make a simple moving robot that can pick up things out of stuff like batteries metal wire and tissue box. AND THEY CALL THIS SIMPLE
December 23rd, 2010 at 02:31
Superb info abt robots. i have got the perfect solution i needed to do my project
January 3rd, 2011 at 09:04
hi… i would like to make a robot which is showcased in the movie SPY KIDS. the little green spider like robot. is it possible to make one on my own ?
January 4th, 2011 at 09:19
@ spka, you will need to provide more details a bout the robot, a link to a picture or video would be appreciated since we do not really know which robot you are referring to.
January 8th, 2011 at 12:59
grt job….
but i want to ask if this geared motor is replaced by periodic motor then it works??
January 9th, 2011 at 07:00
please add the all the remaining lessons soon
January 11th, 2011 at 03:30
hi!!!!!!!!!!!!!!!!!!!!!!
i want to make a robot which is used in militery.
in which there is no effect of riffels & other metals.
so, requested to u give me a step of robot & which metal i used for robot.
January 11th, 2011 at 11:40
@ tirthsanghvi, that is an interesting project. You will need to do lots of research about bullet proofing.
January 23rd, 2011 at 10:07
we have a project, making a stair climbing robot..i just need a simple one that we can make for 3 days only…
January 28th, 2011 at 06:21
i want to do an multifunctional robot what will you suggest for this….what extra parts will be needed for it …
February 9th, 2011 at 08:48
Im sanjeev im just starting up so please tell me how to very simple robots
this will help me in my science fair on 26 February,2011
Please
February 11th, 2011 at 02:58
i am a 1st year student and want to make a simple robot for my collage tech. fest
can you guide me steps over it.our fest will start from 1st of april
i need ur help please
February 14th, 2011 at 02:17
i am kishor patil i am participet in robotix so pleas give me the information to make the simple robot.
February 14th, 2011 at 03:13
hi
I want to make a very simple robot
can you help me please
February 15th, 2011 at 12:34
Hiiiiiiiiii
I want to make a robot wich can make a puzzle.
please help me.
February 15th, 2011 at 12:36
Hiiiiiiiii.
I am 17 & i want to make a robot wich can make a puzzle.
February 15th, 2011 at 12:48
Hiiiiiiiiiii.
tnx
great………
can i make a robot in 2month?
plzzzzzzzzzzzzzzzzzzzz hlp meeeeee.
February 16th, 2011 at 14:18
Making a robot in two moths is certainly possible but you will need to provide more details about the requirements of your robot.
February 17th, 2011 at 14:00
Sir,My name is Anushanjee Im 18yrs old,I like to learn robotics and i made some simple robots[small cars,motors] but i could not make a advanced robot Please give some ideas
i like to do this…………………………………………
February 19th, 2011 at 13:05
hey..i’m a student of B.TECH 2 year actually me and my friends wants to participate in robotics event which will held on our college and we want to a making simple robot in couple of days but we dont know is certainly possible or not you will need to provide some more details about the requirement of your robot and i’m very anxious for it pls do let me know if you have a simple model.pls help me out..
February 23rd, 2011 at 06:15
y..i’m a student of B.TECH 2 year actually me and my friends wants to participate in robotics event which will held on our college and we want to a making simple robot in couple of days but we dont know is certainly possible or not you will need to provide some more details about the requirement of your robot and i’m very anxious for it pls do let me know if you have a simple model.pls help me out..
February 23rd, 2011 at 10:28
Thanks for whatever the contents present in this page….
I would like to know about how to build a simple Robot
February 24th, 2011 at 06:54
………dats rubbish………..sorry but…….it isnt 4 da beginners……..i have made 100s of robossssssss…..and dis wsnt my first one………….
February 24th, 2011 at 11:31
i want to know how to make a remote controlled robot which can run on sand,water,inclined plane,speed brakers and on pebbles.pls help me by sendind some information related to it.
March 3rd, 2011 at 09:03
hi i want to make a simple just like it has four wheels and a wire connection just like a simple car there is a motor & battery not programmable please give an idea & videos if u have there is an event in our college i am doing b.e. pls help us thanks
March 4th, 2011 at 11:09
I am student of 2nd year DME. I want to built the simple robot but the videos of procdure to build robot are not posted on website . Videos makes simple to learn.
March 11th, 2011 at 10:34
i love MAKIng
March 11th, 2011 at 10:36
i love MAKIng robots but i dont now the simple way to bield it
March 17th, 2011 at 09:20
hmmmmmm cool i impressed my girlfriend by making a robo its all due to this site thank u
March 17th, 2011 at 15:38
That’s awesome! what kind of robot did you do? Feel free to post a picture.
March 19th, 2011 at 09:38
iam in 8th can u please guide me how to make a simple fighting robot
March 26th, 2011 at 06:43
hey this site does not show the procedures. it only STATES the requirements… No good!!!!!!!!
March 28th, 2011 at 03:32
its a very nice & professional
March 28th, 2011 at 06:52
am 20 , me n my frnds want to create a mini robot kindly help to me
March 28th, 2011 at 08:32
You can find support for your robotic projects here: http://www.robotshop.com/forum/
March 28th, 2011 at 08:40
We try to address the general requirements in making a robot without providing information specific to any particular robot. The idea is to provide as much information as possible in order to get you started making your very own robot according to your needs/taste/objective.
March 29th, 2011 at 22:32
YO YO ppl.I need some help building a SIMPLE(!!!!!!!!!!!!!) robot
April 1st, 2011 at 12:43
sir i am in engineering and i want to make war robot so please tell me basic concept of robotics
April 4th, 2011 at 06:01
First of all; I would like to thank you for your wonderful information about robots to quench the thirst about robotics in the world. that will be acceptable. I am also the fund of this and trying to invent robot. I am not the rich one. that’s why, I need the appropriate knowledge to make simple kind of robot.
April 4th, 2011 at 07:28
hi
im satish,studying btech 2nd year,i want 2 pepare a robot
which will b useful for in multi purpose like for the events
robogeddon,robomarathon………etc,can u help to prepare a
good robot n how to prepare??
wat are the main requirements??
April 4th, 2011 at 08:21
We can certainly help you out getting started. Simply ask your questions here: http://www.robotshop.com/forum/
April 10th, 2011 at 15:20
I have to do a science project for school and i want to build a robot but i need to do it with mosyly stuff that i alredy have so do you have a really really easy project that i can do??????
April 11th, 2011 at 22:55
i am 15 and i want to make a simple robot how?????????
April 15th, 2011 at 11:31
this project is quite easy…… can u help me out to make a small robo which cleans the house or some project like this so that i can help my students to make the project in their final semester……
April 22nd, 2011 at 03:01
i am shanil from ahmedabad.i wanted to make a simple robot,which i’ll make by taking ideas from here….!!!!!!!!!!!!!
April 22nd, 2011 at 05:12
i have a science project contest and i want to make a robot which can talk and do what i say to it so plz can u help me to make a rabot ….PLZ
April 22nd, 2011 at 05:15
i want to make a robot at home and i want ur help i want to make a robot which can listen what i says to it and can talk i don’t think dat its easy but i want to try it ..so plzplzplz help me ……………………..
April 22nd, 2011 at 05:16
m 12 years
April 25th, 2011 at 08:57
This post explains exactly ow to do a speech controlled robot: http://www.robotshop.com/gorobotics/articles/microcontrollers/carlitos-projects-speech-controlled-arduino-robot
April 27th, 2011 at 17:32
i built an extremely dumbed down robot by taking the plast cover of a remote control car and puting lights on a cofee can that i slipped on to it, but how can i give it moving arms that are remote controled?
May 3rd, 2011 at 10:16
i am a Nigerian who wants to be the first teenager to make a robot in my country pls will kindly teach am seriously in need of your assitance
May 5th, 2011 at 11:38
We are always glad to help. Simply post a question in our forum and we will be glad to help you out: http://www.robotshop.com/forum/
May 8th, 2011 at 07:00
hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii/ineed help for tomake a panzer robot to exibit in our science fair
May 8th, 2011 at 07:02
hiiiiiiii/i need ahelp to make a robot.please
May 9th, 2011 at 14:42
wwwwwwwwwwwoooooooooooowwwwwwwwwwwwwwwoooooooooooooowwwwwwwwwwwwwoooooooooooooooooo me no likey hahaha
May 30th, 2011 at 12:06
what all things we needed for making a robot?
May 30th, 2011 at 12:07
how to make different technolegys
May 31st, 2011 at 02:50
I MADE A WALKING ROBO JUST BCOZ OF THIS
June 2nd, 2011 at 10:53
The information was good. Advancements will be helpful for the aspirants…..
June 5th, 2011 at 09:48
hii.. i m studying B.ENGG (HONORS)( 2nd year) in Information technology. i want to build a robot for the tech fest being organized by some other colleges . so can you send me some information regarding which type of robot i should build at this level of my study
June 6th, 2011 at 06:24
HEY,VERY TANKS FOR THE INFORMATION ABOUT ROBOTIS………..
June 7th, 2011 at 05:00
hello….i m study at noradin secondary school in (somaliland) i want to build a robot
plz help me that.
June 8th, 2011 at 04:55
im a senior in high school and i need help for my science investigatory project. i want to make a simple robot and i was wondering if you can send me email regarding how to make it or websites that explains how to make simple robots. i will greatly appreciate your help. thank you and more powers!
June 8th, 2011 at 09:49
Hello Alna, we remind you that our Tutorial series is the best way to get started. Make sure you go through all the material, there are many hints on how to get your robot done and how to get help!
June 18th, 2011 at 04:04
i am 14 i wanna make robot..???
June 25th, 2011 at 01:51
just now started to do
June 26th, 2011 at 05:13
hey could you pls help me n my friend to make an advanced robot…………
plzzzzzzzzzzzzzz ………….!?!
June 26th, 2011 at 05:14
plzzzzzzzzzz could you help me in making agood advanced robot
July 1st, 2011 at 12:30
i want the all procedure about to make robot car
July 8th, 2011 at 04:55
i am 13 yrs old i want to make a robot for my inter school science fair contest please help i have no idea
July 13th, 2011 at 04:56
…I really want to have a remote controlled robot…all I want is the procedure in order to make it…plzzzzzzzz….
July 13th, 2011 at 10:10
I asked how to make a simple Robot…..
the parts which it need are very difficult to find………….
July 24th, 2011 at 08:13
I need to build a line following, obstacle detecting/avoiding and arrow following mobile robot .Can u please tell me what is the best microcontroller for a line following & obstacles avoiding mobile Robot ?Can u give some ideas about that.I hope to use Atmega1284p ? Is this suitable? what are the best IR sensors(line sensors array) and sonar sensors for this.
July 25th, 2011 at 08:43
its gr8. i also tryd 2 make a robot if u have possible then help me nd srinuevol.evolsyam@gmail.com plsssssssssssssssss send more infomation about robot
July 25th, 2011 at 08:47
hai its gr8 nd i also tryd 2 make a 1 advanced nd helpful robot if u have possible plsssssssssssssssss help me nd gve more information about robot
July 28th, 2011 at 07:40
you are smart but what about thinking of making s robot to help you spy and watch people like i am making it almost done just need report camera
July 28th, 2011 at 10:47
can u plzz tell what are the recent advancements of robots in future in any field especially in electronics…….
August 6th, 2011 at 00:17
im a senior in high school and i need help for my science investigatory project. i want to make a simple robot and i was wondering if you can send me email regarding how to make it or websites that explains how to make simple robots. i will greatly appreciate your help. thank you and more powers!
August 6th, 2011 at 04:30
sir i want a complete details in line followig robot will you help me please
August 11th, 2011 at 08:58
hey this is cool i always wished to build a robot
My frnds r lending a hand to do this
by the way thnx
I’m just a 6th grader
August 11th, 2011 at 11:39
what nonsense was this
August 30th, 2011 at 03:59
koi easy robot banana sikha na
September 10th, 2011 at 01:34
i m building a robot for local robot war. what can i do for defence of my robot?
will u plz tell me…….
September 10th, 2011 at 04:41
pls add to the psudocode……………….
September 13th, 2011 at 02:36
wew, this is very nice, I like the instructions and this is good, especially for those who are on scholl youth
September 17th, 2011 at 01:07
please put simple things so that all can understood or they can do it
September 17th, 2011 at 01:10
hello, please put other many inventions so that the other scientist can explore in the world.
September 17th, 2011 at 01:13
i want to make robots . i read in class 7. though i read in small classes i want to be unic What kind of roots should i make or can i make
September 18th, 2011 at 19:35
actully, really good
September 21st, 2011 at 09:23
please make a new robot a gundam the nme of the gundam is zzgundam deliver it into the phillipines
!!!!……1111
September 21st, 2011 at 10:23
BEAUTIFUL MODEL.CAN U HELP ME PLEASE
September 21st, 2011 at 10:24
HI FUN
September 28th, 2011 at 01:59
i am a B.TECH 1st yr student …
and i hv to learn how to build robots …
since after a week a hv a contest in ISM DHANBAD …
October 1st, 2011 at 03:25
hey,i want to make my first robot pls send me the related videos….
October 2nd, 2011 at 08:39
hi i am studying be-IV year.I am very pasinate on robotics
plz help me to join in eny of the robotic club. I am having some experiance on robotics I have participated in national level robotic competations. I need gudence and economical support. plz help me.:-)
October 10th, 2011 at 02:26
sir,i am btech 2 yr student from information technology.i have never made a robot……….
but am keen interested in making it.please help me,how can i start with simplest robot.
October 22nd, 2011 at 22:39
sir im 10 yrs old and never made a robo
so can u help me to make simplest robot
November 5th, 2011 at 09:27
it is a very interesting webpage
November 5th, 2011 at 10:23
wow its a amazing site to the beginners and also to the developers . I am sure that this site will inspire all students in this technology .
thanks to friends,
Suman Ghosh
call 03462220801
me 9734230505
at
November 7th, 2011 at 00:58
what a backwas bot
November 9th, 2011 at 04:40
excellent
November 9th, 2011 at 06:12
Hi,
It was nice, however i made one. It took almost 5 days. Try it .
November 11th, 2011 at 21:27
whoever scrolls down thiss far needs a life
…
says the person who scrolled down this far
November 12th, 2011 at 03:48
pleas send a real robot to mysore
November 12th, 2011 at 03:50
pleas send a real robot to viganager 3 stage in mysore
a big robot which do everthik in 1 second
November 12th, 2011 at 03:54
a new real robot for free
November 15th, 2011 at 01:51
really this website helps us a lot in building a robot.
this manual helps to know each and every part of robot
November 15th, 2011 at 05:38
Nice Robo well i had made a terminator robot with a little programming knowledge and a lot of money yeah and 1 old cpu , with parts
November 17th, 2011 at 12:19
omg is that all it will take me lots of days just to build that its so tuff
people will think it is so hard
November 17th, 2011 at 12:21
and people will want easy ones not hard ones
November 17th, 2011 at 12:22
and people want easy ones
November 17th, 2011 at 12:22
hmmmmmm that is tuff
November 20th, 2011 at 03:32
i want to build a robot, i want information about this???????????????/
November 20th, 2011 at 03:34
require website of robot
November 21st, 2011 at 10:30
Its JuSt So CoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooL
ThAt I CoUlD LeArN AbOuT “RoBoTzzzzzzzzz” ………………………………… ThAnX A LoT……………………………
November 27th, 2011 at 10:57
interesting but defficult..& expensive…
November 30th, 2011 at 11:00
Wow ! Amazing its easy as 123
November 30th, 2011 at 11:02
Wow amazing !!!! Its easy like 123
November 30th, 2011 at 23:42
I’M 13 I WANNA MAKE A ROBOT FOR SCIENCE FAIR AND I THINK MAKING THIS ROBOT IS HARD FOR ME
December 5th, 2011 at 09:58
nice one bt tuf
December 5th, 2011 at 11:07
M A STUDENT OF STD 6th AND HAD MADE A ROBOT HALF BEFORE SEEING THIS WEBSITE.NOW I M STOPPED.TEACH ME HOW TO DO STEP BY STEP.
December 14th, 2011 at 02:33
Hi, am 17yr and i don’t know how to build a sample robot using household stuff. Pls help me
December 23rd, 2011 at 21:35
I’m turning 14 and i wanna make a robot in the winter hols.
but you give me bull shit names i’ve never heard of (puke)
December 24th, 2011 at 13:31
hi ,am a college student . i m interested in robotics . but, want to build a simple robot with house hold stuff . teach me from level zero as i know nothing about robotics
December 31st, 2011 at 00:08
well its nice.. quite attractive,,,,,,,
n imay say overall its the better one.
December 31st, 2011 at 06:34
How the hell on Earth can a person make an easy robot model?
I am in school and want to make 1.!!
January 2nd, 2012 at 04:02
hi ,am a college student . i m interested in robotics . but, want to build a simple robot. teach me from level zero as i know nothing about robotics. please teach me step by step…
January 3rd, 2012 at 02:08
hi! how to make my first please help me & were i can find the parts & i want to make household stuff & teach me from zero level as i know nothing about robotics.
January 5th, 2012 at 07:39
im 14 years old n hv no knowledge about robotics. can u tell how to make a simple robot from household things.
January 11th, 2012 at 21:32
I didn’t know anything about robotics.can u tell how to make a robot from cheap things.
January 22nd, 2012 at 04:55
Hi i want know that can we make robot using recycled material
January 22nd, 2012 at 11:05
i want to make a robot which can able to fight so please tell all the details sir ………………………….
January 22nd, 2012 at 11:07
i love u
January 26th, 2012 at 12:34
i”m student of hindustan college mathura. i”m very intersted with robot life n want to build a human robot.
January 27th, 2012 at 00:01
I am a child ,I am now making a robot. a humanoid robot.I and my brother vyshnav is making a fighting robot.
January 31st, 2012 at 06:27
I’m 11 i want to make a robot it should be easy lols not so
.
January 31st, 2012 at 08:36
hi sir , i am 11 years old and i want to know how to make a robot out of boxes really easily so please help and tell me the website
February 6th, 2012 at 11:05
Can you explain a bit more what you want to do?
February 14th, 2012 at 09:01
this is a bit complicated
February 16th, 2012 at 04:14
By reading this we can build acheap and a simple robot
February 24th, 2012 at 07:53
yay!
February 24th, 2012 at 14:13
i making a robot so i need your help
February 26th, 2012 at 12:20
i want to make a robot.
plz sent me suggestions
February 27th, 2012 at 11:48
It cul i luv it i can make my own robot na tank u
February 27th, 2012 at 23:07
it”s really nice sir
February 27th, 2012 at 23:52
ppl …..wat part of tis is either easy r difficult ?
its all in d Heart ….r shud i say Mind???
Guys This Siteis AAAMAZZZZZZZZZZZZZZZZZZZZZING!!!!!!!!!!!!!!!!!!!!!!!!!
February 29th, 2012 at 08:48
Start with a simple, small 2WD robot.
February 29th, 2012 at 08:53
What can we do to help?
February 29th, 2012 at 08:59
We’re open to suggestions. Robotics is not the easiest field, but we’re trying hard to make it accessible to almost anyone who is patient and ready to learn.
February 29th, 2012 at 09:15
You need to know the main components in a robot, then think of where you can get replacements. For example a robot needs a controll – perhaps an old computer? A robot needs gear motors – perhaps an old motorized toy? A robot needs a frame – any rigid container will do. A robot needs wires – use wires from any electronic device.
February 29th, 2012 at 09:44
Perhaps you have considered adding extra videos to your blog posts to hold the visitors further entertained? I mean I just read through the whole piece of writing of yours and it had been quite good but since I’m more of a visual learner,I found that for being further helpful well let me know how it turns out! I love what you guys are always up too. Such smart work and reporting! Carry on the great works guys I’ve added you guys to my blogroll. This is a good article thanks for sharing this informative information.. I will visit your blog regularly for some latest post.
March 19th, 2012 at 06:31
I m keen interested in making a robot plzzzzzzzzzzzz send me some the circuit diagram amd process for making a robot
nd one more thing im a beginer and i will go to class 10
so pplzzzzzzzzzz help me in making robot cause i m interested i this when i was 5 yrs old plzzzzzzzzzzzz help me plzzzzz
sir, thamk u
my email id
ku.praveen846@gmail.com)
(praveenthemj@gmail.com)
(praveenprasad128@gmail.com)
March 19th, 2012 at 10:57
This post dates back ~7 years. Fortunately the entire setup here can be replaced with a $35 microcontroller / motor controller, the ROMEO. Add two small gear motors and a battery pack and you’re set.
March 21st, 2012 at 08:26
oopz!i dont havent that things
March 22nd, 2012 at 08:47
Dear go robotics.com,
I am very interested in robotics and I wish to build a robot myself for the first
time in my life because it will be amazing how I will own a robot.
The reason I did not make a robot is because I am only 10 yrs old.
thank U,
Sealtiel
March 22nd, 2012 at 12:20
i need help for a science fair
March 26th, 2012 at 10:45
You will need to explain a bit more what it is you want to do…
March 29th, 2012 at 21:56
I like to make Robots, Please Load some others robot kit on websites
March 30th, 2012 at 07:57
We’re always looking for new and interesting products. If you have any suggestions, we invite you to tell us.
April 4th, 2012 at 17:45
so hard to leave a comment with how many there are
April 4th, 2012 at 17:48
April 7th, 2012 at 07:14
i want to make a simple robot without any technical work . please do help me
April 9th, 2012 at 04:05
i wanted to make a robo car which go onto some black line mark…..
April 9th, 2012 at 13:19
You can start by getting a Robotic Kit for Beginners: http://www.robotshop.com/beginner-robot-kits.html
April 9th, 2012 at 13:50
Perhaps a line following robot? http://www.robotshop.com/productinfo.aspx?pc=RB-Owi-12&lang=en-US
April 13th, 2012 at 09:26
it really helped me a lot n thnx for it
April 20th, 2012 at 01:21
I MAKE TONS OF THEM BUT ALL I CAN SAY ” BOOO!”
April 30th, 2012 at 03:35
I LOVE TO MAKE ROBOTS.BUT HOW WILL I MAKE A ROBOT?
I DONT HAVE ANY THINGS TO MAKE ROBOTS.MY DEAR GOOGLE,
PLEASE MAKE A LIST OF HOW TO MAKE ROBOTS IN A VERY
SIMPLE WEB SITE. PLS PLS PLS
April 30th, 2012 at 08:17
We’re working on it. Robotics is a bit more complex than say, making a sculpture or artwork, and usually needs a bit of an investment (in time and money).
May 6th, 2012 at 03:39
very amazing site loving it ..:p
May 14th, 2012 at 01:41
i wanna make a robot….could u give me some tips?????
May 14th, 2012 at 09:02
That’s what all the “how to” articles are intended to do. Is there something in particular you are looking for?
May 18th, 2012 at 08:55
Hey guys, i am 14 and i am trying to create a remote control transformer can… but i do not know to make the legs move. I have a design to make it have four legs, but i do not know how to make them move. i just want to know what i can do to make it walk.
May 18th, 2012 at 14:02
Take a look at RB-Dag-61 on the RobotShop website to see how to create four legs. You should use servo motors, and would need a servo motor controller. You can create a walking robot with 8x RB-Dfr-124. We’d love to see the project when you finish.