Circuit Lake

The Arduino Drum Machine is MIDI groove-box features 14-track Drum-Machine Step Sequencer with 2 accent tracks and 32 steps. The project built based on Arduino and wusik software. It’s like the classic Roland TR707 but with some twists, as it actually has 32 x 1/32 or 32 x 1/64 steps. This Drum-Machine Step Sequencer project [...]

Crystal radio is the simplest type of radio receiver, and can be handmade with a few inexpensive parts, like an antenna wire, tuning coil of copper wire, crystal detector and earphones. It needs no battery or power source and runs on the power received from radio waves by a long wire antenna.

This simple sound generator is built with an Atmel ATtiny861 microcontroller as main processor and an SD memory card as storage media. The project based on 8-pin SD Audio Player. It can generate clear sound with fast PWM output from ATtiny861. This project is easy to be controlled by external signal hence it is usable [...]

The project goal is to create 300W audio power amplifier for 4-ohm DIY speaker with low distortion based on IC LM3886. It’s hope that the amplifier can produce deep, tight and punchy bass while keeping the excellent mids and highs from other gain clones.