Let's Make Robots! | RobotShop

Recently Collected Posts

This is my first symet. The motor i salvaged from something or other, the caps and solar cell came from spark fun electronics. I'm still trying to learn basic … Read more
Navigate around via ultrasound, avoids obstacles
Using a
31-Jan-2009 Hi! This is my first robot! I was waiting a week for electronic components to arrive from UK, and then long month to find proper chasis. I found it … Read more
Navigate via IR and Compass. Returns to home base. Communicate with computer via Xbee.
Using a
Hi, Everyone! I have just started my second robot: IsoBot02 - The Carpet Rover :) He is going to roam around via Sharp IR sensor and compas module. And I am going … Read more
Sorry I do not have any pictures of this yet.  I just got batteries for my camera this morning before work.  This consists of: 2x Fairchild QRD1114 Reflective … Read more
Navigate, seek humans for input, speak.
So at long last, here's my latest robot project, lovingly titled OPUS. I've named him that because (a) I've been working on him for so long, and (b) he has useless … Read more
Act cute, try to keep itself charged
Using a
Not much to say about it at this point; this little guy is basically going to be a living ornament. Read more
is cute, warns me when i receive a new e-mail
Using a
As i'm waiting for the last missing parts for my "big" project, i play and make few experiments so i learn new stuff... those days i work on serial communication … Read more
Have you ever made a robot that ran fine when you held it, but when you put it on the floor it moved really slow (or not al all)? Hmm… Did you use a motor … Read more
Learn the terminology, and which package to choose for your needs.
     If you've ever had to use any kind of IC, chances are you've heard of quite a few package types. IC packages are split into two main groups, through-hole, … Read more
Navigates around in its target enviroment using three i.r. sensors and one ultrasonic rangefinder
Hi guys I have noticed the need here of an arduino start here robot.  Therefore I present to you Bob V.2 from the instructables website!!! For those asking why not … Read more
Make your Picaxe x-series chips sing!
So, want to add a little tune to your drumming machine? Want something more than just a beeping noise for your robot to produce? Then you have an easy … Read more
Recently I got two XBee modules. And after some struggle with serial comunication I finally understand how to share data between two Arduinos. As a start I used 2 … Read more
can follow a black line on a flat lighter surface
Using a
This is a walk through for a simple line follower that can follow a black line on a lighter surface, i used black insulating tape on the floor. The robot can be … Read more
The GWS servos are extremely easy to modify to continous rotation, here is how :)
Thanks to  ndupont for this: https://www.robotshop.com/letsmakerobots/node/4873 and to Anders for this:https://www.robotshop.com/letsmakerobots/node/259 - Now I … Read more
communicate data to your microcontroller unit via your pc
Hello guys, this is a simple walkthrough that lets you understand how to do BASIC communication between your PC and your MCU (for now it's only from PC to MCU, … Read more
Making gearbox out of random plastic gears and small motor.
How to make gearboxes out of random plastic gears:  This tutorial shows how to make simple and small plastic gearbox with gear ratio about 1:100. Ratio can vary. … Read more
How to program a trusty PICAXE while running Ubuntu (or most Linux distributions)
Well, a small comment in the shoutbox caused several of my LMR buddies to download Ubuntu. Good choice, I like it! Here's a walkthrough to programming a PICAXE in … Read more
Teaches an old clock a new trick
Anyone ever try to modify one of those cheap battery operated analog clock mechanisms as gear train?  It would make an extremely lightweight gearbox for small bot. … Read more
Converts the servo for use as a geared motor
It’s always good to have servos that works like a geared motor. That also can go in both direction and speed is adjustable, it’s very handy in robotic project … Read more
Powerful union of a Beagleboard and Arduino to navigate using computer vision from a webcam
Using a
The Beagle-Arduino robot will use a Beagleboard for high-level robot functions: image processingartificial intelligencespeech synthesisvoice recognitioninternet … Read more
Hi guys, Unfortunately I can not build the robot to the end because my RC is broken. I took a few pictures and two movies. … Read more
Wakes people up and runs away with alarm clock on his back :)
Using a
Ok, It came to the piont Mr. Wake got some shape, so I'm posting it here. Wake is Mr. Basic V2.0 contest entry, and he is intelligent annoyeing alarm clock bot :D. … Read more
Controlled by a pic 16f84a microcontroller, it responds to light and shadows in a brightly lit room. Made of plywood, paper clips and popsicle sticks, as far as … Read more
Make a robot sense stuff in dark or light conditions.. guided by visible light
Update: I am tired of it being named "FritsLDR", I cannot post to people "Try using FritsLDR", it is just too self centered. And I would just love to see some more … Read more

XMOS - Tutorials

My XMOS entry was to create tutorials that not only taught how to use the XMOS but also lead up to explaining complicated robotic principles as well as good coding standards. So far I have been trying to figure out what to make a tutorial about. Below is my list which I will add or subtract from depending on the XK1's capabilities and the complexity of the tutorial.

Stall Detection

Ok, here's my problem for you guys.  How do you use a MCU(Arduino, PIC, Stamp, etc) to detect if the bot has a motor stalled on it. I know it can be done, because I've read about bots that are bumperless and detect which motor(s) are stalled for collision detection.  Yes, I know you measure the amps that the motor is pulling, but how do you use the microcontroller to do it?

 

Cheap & Easy Speech For Robots

I am always on the search for cheap hackable devices for robots. I have found a couple here you can use to add cheap, easy, and unlimited speech to your robot.

Soundx2.jpg

 SMACK TALK for X-Box 360                                                        Promo for "SAW III"

 

Found the correct motors for Leo

Well found the correct motors for Leo, less than a $10 fix, actually $7.16 before S&H. Polulu.com wants another $10.95 for S&H.  I don't mind paying for S&H but would rather wait till I ordered more than the S&H is going to be.  I might get a few extra motors to put on the swap board and see what I can get for them.  $20 for 4 motors, or $30 for 15 motors, you do the math and see what you come up with.
Updated with a 2nd video! Code is now uptodate and can be found at: code.google.com/protobot. Read more