I’ve been having great fun with the Arduino Uno microcontroller board. Here I’ve got the Arduino using a shift register to light up a 7-segment display output.
This device is reading the output voltage of the solar panel out to a 2-digit, 7-segment display. So basically it’s a light meter! The real fun of this little project has been writing the driver in C++ Arduino-code to run the shift register. Magic!
Gregory Kimball 