Let's Make Robots!


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.


Grounded Bicore

Hey guys!


I'm new to BEAM robotics and I want to build a simple grounded bicore. Now I want to use 100uF electrolytic caps and two 1k resistors (which should give me 1 pulse every second.

I'm using a 74HC14 inverting Schmitt Trigger. How are the caps connected to the inputs/outputs? Does the positive side of the cap go to the input or to the output?


Thanks in advance