PWM – ElectronInjection

Reading Light Bar

March 16, 2026December 21, 2025 by ElectroBrandon

Requirements: This was a basic project. The ESP32 is overkill for this, but I had it on hand. For linear faders that are normally used on a mixing console create voltage dividers that are read by the ADC on the ESP32. The light is dimmed with standard PWM and MOSFETs. Fun artifact. My son wanted … Read more

Controlling PWM With Potentiometer On AtMega328p

May 14, 2019 by ElectroBrandon

This is crude, but the thing works. We’ve all seen this on the Great Scott Youtube channel (among other places) where a potentiometer controls the duty cycle of a PWM waveform on an oscilloscope. This version isn’t pretty. It needs some sanding and painting. However, it’ll get a person started. I’m adding it here as … Read more