Well I sent 2 Doodle Bots to Andrew to show at Makers Faire and for anyone interested I have now put detailed, step by step instructions here:
Instructables: http://www.instructables.com/id/Building-a-Doodle-Bot-kit-from-DAGU/
MAKE Projects: http://makeprojects.com/Project/Building-a-Doodle-Bot-kit/2627/1#.UGbsra4_5Sm
This is my first experiment with artificial inteligence using a simple Doodle Bot with a RTC and SD card for extra memory. When I say artificial inteligence I am not talking about a supercomputer that you can discuss philosophy with over a cold beer. Simply a robot that will try to learn from past experience as previously discussed in my blog: http://letsmakerobots.com/node/34177
The Doodle Bot is a very simple robotic platform for beginners, students and hobbyist.
The Chassis is a simple laser cut panel with two ball raced geared motors and a servo for raising and lowering a white board marker, jumbo chalk or crayon. Each wheel is fitted with an 8-pole magnet that is monitored by hall effect sensors to form two simple wheel encoders.
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.