Dumbot Revision 2

You need two hubs and two of each kind of wheel. I use 30 mm x 40 mm x 5 mm O-rings available from Amazon. You need 4 M3 x 25 mm screws to hold the motors on and 2 x 8-32 3/4" screws for one set of wheels. You need two motors available from Spark fun (hobby motors 2 for $5), You need a brushed motor controller from Sparkfun with headers $5, you need a 3xAA battery pack with switch available from Jameco, and a PIR motion sensor available from Amazon. The code is for a PIC16F1825 microcontroller. I also use a PCB speaker from parts express along with a 386 audio amplifier (and supporting circuitry) and an LED from Lighthouse LEDs. In the code the motor pulse frequency changes so I route an output pin to the speaker so as the robot goes faster the pitch gets louder. You can use velcro to hold stuff down, since I make my own PCBs I use the PCB holders.

https://www.youtube.com/watch?v=ioGz1LwgC6o

Looks like some of the includes in the code confuses the html processor.

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