Hi there! This instructable contains the comprehensive instructions of how you can hack a tower pro SG 90 micro servo for continuous rotation.
Micro servos can be used as robot wheels and are more convenient for such applications. This is due to the fact that micro servos have a certain figure that helps you attach it to a robot chassis or what not. PLUS: It has that cute but not irritating sound that makes it really nice to be used on cute but reliable robots.
Micro servos usually have a maximum rotation of 180 degrees and a dc motor on the other hand has continuous rotation.
Before proceeding to this tutorial, make sure you have extra money because you might do this wrong if you're doing it for the first time. But nevertheless, since I am going to guide you to this process, I just wish you good luck and I hope you're money gets spent for a cause.
I am also not held responsible for whatever happens to your servo and it is really hard to put everything back the way it is once you've done this hack. (Yeah, I've tried it out and luckily I got the servo back to normal)
ALSO, TAKE A SNAPSHOT OF YOUR SERVO AFTER EVERY STEP. In this way, you can go back to step one any time.
Step 1: Materials
All you need for this project are the following:
Shear cutter or Hobby drill
Stranded or solid wire
And of course, a micro servo
However, I understand that some people don't have a micro servo and might want to buy one.
Here are my store suggestions:
In North America,
- Sparkfun through shipping
In the Philippines,
- eGizmo, Taft for almost P200