TDA2822 Audio Amplifier: Stereo & Bridge Circuit Guide
The TDA2822 is a dual low-voltage audio power amplifier IC designed for small audio equipment. Its two channels can be used in stereo or in ...
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Passive Bass, Treble & Volume Control Circuit
This circuit combines volume adjustment with frequency-selective bass and treble shaping. The diagram is a reference layout: verify every re...
TDA2030 5.1 Amplifier Board: Specs & Setup Checks
This post describes a six-channel amplifier board built around TDA2030 devices. The original listing provides the board photos and several s...
Stereo Preamplifier PCB Layout: Board Images & Build Checks
This post presents the original board images for a stereo preamplifier project. Use them as a visual reference while checking the circuit do...
DIY Arduino Leonardo Octapad: Piezo Pads & USB MIDI Setup
Build a compact electronic drum controller with an Arduino Leonardo, piezo triggers, and USB MIDI. The board illustration below documents th...
P10 LED Scrolling Display: Video Guide & Setup Checks
This video demonstrates a P10 LED scrolling display project. The exact wiring, driver board, and scrolling method depend on the panel and co...
BOSS GT-1 Troubleshooting: Safe Checks Before Repair
This guide outlines safe, model-specific checks for a BOSS GT-1 guitar effects processor. The video below shows the original repair walkthro...
SMPS Explained: Components, Power Flow & Safety
A switched-mode power supply (SMPS) regulates electrical power by rapidly switching semiconductor devices and controlling energy transfer. I...
Homemade Mobile Drum Controller: DIY Octapad Video Guide
This project turns a homemade drum-pad layout into a mobile MIDI instrument. The video below shows the original build. Use it to identify th...
DIY Arduino Octapad at Home: Sensor, MIDI & Board Choices
This video demonstrates a homemade eight-pad electronic drum controller. The project combines pad construction, piezo sensing, and a MIDI or...
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