Having one of those days where your too lazy to do anything? Have a robot doodle for you while you sit back in your favorite chair. This is a very simple drawing robot that was actually started by one of our student engineers. I just made the base plate bigger so I could add a third servo to raise and lower the pen.
My base plate is laser cut acrylic but it could easily have been a small food container, CD or a piece of wood. Just use some double sided tape or hotglue to hold it all together.
Because the Micro Magician has the dual "H" bridge, IR receiver and servo outputs already built in this is a very simple robot to build. Just plug in the batteries, geared motors and servo.
I set the servo voltage selection jumper to 3.3V. Some servos will not operate at 3.3V but the little black duck servos seem to work fine, just a little underpowered. I could run the servo directly from the battery but it is 8.4V when fully charged which is dangerously high for a 6V servo.
Programming was easy as well. The Micro Magician library has drivers for the H bridge as well as the IR receiver. I have attached the code and latest version of the Micro Magician library which can also be downloaded from my product support site: https://sites.google.com/site/daguproducts/
This robot is a great way to entertain the kids on a rainy day. Simple to build and easy to use.