The MC2100ELS is a well-known motor control board used in many treadmills. This repair story started when I bought a used treadmill. It work...

In this post I’ll present a purpose-built adapter board for the SCT-013 series current transformer : through-hole PCB, configurable burden r...

I've one emergency light from AliExpress, with rechargeable LED lights that automatically turns on when there’s a power outage. You plug...

ref: 2020   This post it's a follow up of the August 8th 2019 one about the Ruby Amp. As I already write in that post, the Ruby Amp i...

D08 "Kenshiro" bass guitar amplifier is my latest amplifier. It's built on top of the reliable TDA2050 audio amplifier chip....