Let's Make Robots!
Solar Roller:Charges capacitor(s) until sufficient charge is reached, then discharges.
I have started finished work on my second robot. It uses a FRED solar engine, and is a really simple circuit; I salvaged a belt and pulley from a cassette player, … Read more

Basic 74AC240 Bicore

I wanted to upgrade him with a solar engine, and I decided on the FRED solar engine.  Originally, I was going to build the FLED solar engine, but it is so inefficent it drove my perfectionist side insane.  Sooooo, I ended up spending half an hour getting this circuit to work, and I suceeded in getting it to pulse in direct sunlight and under an incandescent desk lamp.  The FLED couldn't even pulse with the light bulb literally on top of the solar cell!

I included a video of it pulsing wherever videos I embed in my posts go/are.


reacts to light
Using a
Here he is, after three hours of soldering. His brain is the exact one from the "Junkbots, Bugbots, and Bots on Wheels" book. He's still a work in progress, and I … Read more

Driving a motor with solar cells (without a solar engine)

What I want to do is this: I have a basic bicore hooked up to a vibration motor.  He kind of flops around, but it isn't totally random.  Anyway, I was wondering how I could power him with some solar cells that I have without using a solar engine.  If that's possible, I would really like to hear some ideas.