Trace of PWM sequence

A project log for LED cube using charlieplexing

I'm building a prototype 4x4x4 LED cube with a charlieplexed topology.

endevor100endevor100 10/18/2017 at 22:350 Comments

No real big changes in the software, but I took this video of the oscilloscope measuring the voltage across a resistor (and one current limiting resistor) while it goes through a Pulse Width Modulated dimmer sequence. Edges are looking sharp and the noise on the pins when they're floating is relatively low so I'm pretty happy.