flickerless display. To make both the LED matrix circuit board and the control board, [Joekutz] carved out isolation paths in copper clad boards using his homemade CNC mill. Be sure to check out ...

We’ve all seen Daft Punk helmet builds, but [George’s] project is a homemade LED ... connected to a MAX7221 LED driver, which gave him control over some dot matrix displays to test the wiring ...