Let's Make Robots! | RobotShop


Skitters more than it strides
Using a
5/5/17: I have replaced Strider's twine walking mechanism with paperclips. He still falls over a lot, and he skitters instead of strides (due to using a 9v battery … Read more
Been working on a building a quad walker probably for a year now. What started of a coding project has now ended up with me learning how to 3d model and building a … Read more

2 or 3 joint legs

Looking at making a quadruped or hexapod and not sure about the best config for the legs. I've made a quadruped before with 3 servers per leg didn't seem to gain much from the extra flexability.

So wanting to see what others think and see where it goes

Load-bearing Knee Joint

I'm trying to work on a larger project, am on a budget, and as such, I do not have a welder.

Walks in a stright line
Since this is my first submission on Lets make robots i would like to kindly say hello to all roboteers and hobby makers alike. Ive enjoyed seeing and watching the … Read more
navigated around ultrasonic
Using a
My first attempt to build and run a quadruped. Parts of laser cut acrylic. Powered with an arduino uno and sensorshield. Total of 12 micro- servo's, partially metal … Read more
I have a new walker in progress. A part 2, if you will, of Sintra-sticks. This time, I am using smaller components, more servos, and hoping for more luck on … Read more
butler, all terrain movement, suit controlled, partial telepresence
Using a
This is the more resent version of my humanoid and omniquadruped robots the humanoid has had its legs upgraded since my last post for it so now it is able to stand … Read more
4P is a small quadruped robot designed to teach more complex mobility functions with the use of inverse kinematics and stabilization algorithms. Read more
autonomous navigation of unknown terrain
Using a
Hi LMR!   So I have made some significant progress in the Stag project and I thought it was time to post it.   Read more

Servomotor torque requirement for a quadruped robot


I'm planning to build a quadruped robot soon. My design is very similar to the design in the following link.


I'm not that good at mechanics. I like to calulate the torque required for each motor. Is it ok to use the formulas/procedure in the following link to design a quadruped shown in the above link?


Navigate around via SHARP IR
Using a
This is my second robot. It's inspired by Chopstick Junior, https://www.robotshop.com/letsmakerobots/node/29708. Few months ago I found where to buy cheap 8g servos … Read more
12/13/2012 Update: Code is now available for download at http://engineer-this.com/QuadrupedVer2.txt Its saved as a .txt file because I can't host a .ino. Just … Read more
Hey LMR!   I am new to the LMR community and I am looking forward to learning from you guys and sharing my projects.   Read more
UPDATE : October 23, 2012 Apparently some guys got trouble opening the CorelDraw files attached before. So I exported those files into various extension : cmx (to … Read more
Walks on its own using its legs
Using a
I wanted to implement a robot that could walk. Servos are scarce/very expensive in India after three long days of search i found a very inexpensive source (Thanks … Read more
Autonomous, initially tricks and general behaviour, then walking around and navigating in future
Using a
This bot now walks! slowly...but it walks!  This is the project I am working on atm, relatively happy with the build now and working on coding. Also attached a … Read more



I have started building a quadruped robot using Lynxmotion SES parts. I have the Lynxmotion quadruped body kit and 4 SES 3DOF legs. I have bought servos and put everything together. However, I'm much more comfortable with the code than with the mechanics.

Walks, dances, waves, rolls over, breaks
Using a
This is a 4 legged robot I built to entertain and to learn more about how to build robots. It uses eight cheap MG996R servos, two in each leg, controlled by a … Read more
Yet another walking robot but starting from scratch.
Using a
Update August 16, 2011 The PCB boards arrived a day earlier than expected (ordered on a Friday, arrived the following Friday). Eleven brain boards and 66 leg … Read more
Autonomous roaming using a variety of gaits
Using a
This critter has been with me for some time. Built around a (discontinued) Crustcrawler quadwalking kit, UGLY is now an autonomous 2dof, 4 legged roamer using a … Read more
UPDATE 24.April 2011: New video! :) I implemented automatic resetting of the legs positions before changing from forward/backward walking to left/right walking. … Read more
This is a quadruped robot in prototyping using seeeduino mega, 12 HXT900 hobby micro servos, 3.7V lipo battery. Materials used are all plywood secured with small … Read more
Hey guys, Figured I'd share some of my more recent work; Dragoon. This is an RX-64 based quadruped robot using an ArbotiX Robocontroller and the new & … Read more

Amazing homebuilt quadruped

Searching for robot videos on youtube I came across this japanese guys profile. The quadruped in the video has a really interesting leg structure, not to mention the extra drive wheels. Check out the videos, it just looks and moves amazing!

Mounted arm playing with balls..

Movement, sans arm..

Leg detail