Let's Make Robots!

continuous rotation

Uses 3,5mm jack to transfer signals on a rotating axis.
First thing first. This is just a quick and dirty attempt to improve the 360 degree sonar idea. I have seen some of the designs at LMR with a 3,5mm jack plug and … Read more

Hacked some servos for fun

 

I had a GWS S03TXF 2BB servo that I had previously released the magic smoke from. It's been sitting on my desk, labeled "bad" for some time. I took it apart and could see that the board shows visible signs of frying.

I also had a GWS S03N STD servo that I had butched for the brains, in order to try to create a mongo-sized servo for steering YardGnome (a work in progress).

Hack your servo v 2.00 – Add 10-bit incremental / absolute encoder feedback to your hobby servo

Modified continuous-rotation servos are used extensively by roboticists due to their small form-factor, enclosed motor-gearbox, ease of mounting and high-availability. Some users keep the original drive electronics and the potentiometer feedback element but this approach allows for limited position control and velocity control / profiling. Others tend to remove them and use external control/drive boards and custom-made encoders. Ideally one would prefer to have the feedback element and the new drive electronics enclosed inside the servo.

Hack your servo V1.00 - Turn your servo into a powerful linear actuator

Provided you have the tools and the servo you can built this for under a couple of bucks. The actuator extends with a rate of about 50mm/min. It is rather slow but very powerful. Get the full story:

http://letsmakerobots.com/node/14671

 

Comments welcome!

The GWS servos are extremely easy to modify to continous rotation, here is how :)
Thanks to  ndupont for this: http://letsmakerobots.com/node/4873 and to Anders for this:http://letsmakerobots.com/node/259 - Now I had some GWS-servos that I … Read more