Here we see an image of Ivan's Playground, a wooden base made by my buddy Walt with parts on top all related to the construction of my robot Ivan who is being designed in a team effort in the project: #Ivan the TeamBot.

The stepper motors draw 1.7A at 12V, just under the 1.8A limit of two SN754410 chips piggybacked together. Rather than solder them, I have placed them in pairs on the right breadboard to drive three steppers from the 12 outputs of the Metro Mini board on the left breadboard. Also shown are the microphone, CdS cell, and TL074 quad opamp chip on the lower part of the left breadboard. This system represents your typical BeefyDuino setup.

My plan is to go ahead and build this electronics, write the software to control it, and demonstrate that the BeefyDuino does it's job this way. Once that is done I can publih the schematics for anyone to use. In the longer term future I may do a soldered protoboard and / or a custom PCB design intended for laser cutter prototyping and also board house manufacture.

Les