Homebuilt biped

Lynxmotion Legged Robots
1

Hey guys, I’m new at robotics but I like what some people have built very much. Unfortunately I do not have any where near enough money to buy something like the Kondo KHR-1 so I have decided to build a robot myself.

I have been looking for servo motors on ebay because in my country (Australia) specialty stuff like this is over priced very much in the stores.

The problem I have is that I’m not sure what torque I would require? My aim is to have as small a robot as possible because I like the look better than the larger ones, most of the motors I have found are either SG90 9g with 1kg/cm torque or SG50 5g with 0.8kg/cm.

To me 1kg seems like a very very large amount considering the size of the robot I want to build, but since I am very new at robots, I wanted to ask for some assistance.

Thanks for any help :smiley:

2

A place to start would be to closely study existing robot kits similar to the one you want to build. Note the robot size, design, and the size/type of servos used. This should give you an idea of what servo works in a given robot. You might want to search the forum for “Tower Pro” to see any comments about that brand of servo.

3

The only biped I know about that can be built with inexpensive (week) servos is the BRAT. It’s 1/3rd the cost of the KHR-1.

lynxmotion.com/Category.aspx?CategoryID=97

We have several tutorials showing how to connect sensors for walking and avoiding objects, getting up if laid on sides, front or back, even a water bottle seek and destroy project.

lynxmotion.com/ViewPage.aspx … egoryID=19

You can also make one from the SES parts if you already have suitable servos. :wink: Just order the brackets shown in the assembly guide. Less than $150.00 no electronics. Hope this helps.

lynxmotion.com/images/html/build104.htm