2 layers152 × 88 mm
RFBitBangSMT
profdc9/RFBitBanger
A QRP digital transceiver created from readily available parts for off-the-grid maintenance
271 parts222
Boards using the LM386
285 boardsBoards in 234 GitHub repositories, designed in KiCad, that use the LM386 by Gcore (0.2% 0℃~+70℃ 4V~12V 4mA 50dB 700mWx1@8Ω Analog voltage gain SOP-8 Audio Amplifiers ROHS). See how each wires it, with its parts, size, README and files; the LM386’s symbol, footprint and pinout are on its own page.
- 2 layers90 × 140 mm
Drumkid
mattybrad/drumkid
Version 4 was the first successful working design, with full code, schematics, Gerbers, etc available on GitHub.
70 parts137 - 2 layers
LM80C R6
leomil72/LM80C
A Z80-based homebrew computer withTMS9918, AY-3-8910, Z80 CTC, Z80 PIO, and Z80 SIO
153 parts123GPL-3.0 - 2 layers145.3 × 44.5 mm
- 2 layers184 × 114.8 mm
Poly555
oskitone/poly555
The POLY555 is a polyphonic, analog, square wave synth based on the 555 timer chip.
262 parts93 - 4 layers223.3 × 120.1 mm
ISA FPGA v2
robfinch/Cores
Cores ===== RTF's Cores Use at your own risk. Welcome to my galaxy of cores. Contained in the directories are IP cores, source code for digital circuits.
132 parts78 - 2 layers101.6 × 137.4 mm
- 2 layers104.1 × 73.7 mm
- 2 layers200 × 96 mm
Touchtone555
DarcyJProjects/touchtone555
An open-source DIY, NE555-based analogue synthesizer - play notes with a stylus
73 parts33 - 2 layers54.9 × 54.5 mm
- 2 layers99.7 × 64.1 mm
8bitWave Module
tebl/8BIT-Wave
An Arduino-based tape player for old school computers like the ZX Spectrum, Dragon 32 etc. Hardware is compatible with tzxduino/arduitape and Maxduino firmware.
55 parts31 - 2 layers115 × 45 mm
- 4 layers43.2 × 62.7 mm
- 2 layers165 × 100 mm
- 2 layers135.3 × 106.7 mm
- 2 layers97 × 97 mm
QO100 RX
barisdinc/N3B_SDR_Transceiver_HW
V/U/SHF and QO-100 SDR Transceiver Project
167 parts20GPL-3.0 - 2 layers100 × 80 mm
- 2 layers57.7 × 107.7 mm
The Ear Tool
HarbinRepairs/The-Ear-Tool
Audible Electromagnetic Interference Detector - Model ET-1
23 parts14GPL-3.0 - 2 layers55 × 50 mm
- 2 layers100 × 100 mm
MCTheremin
profdc9/MCTheremin
Microcontroller based theremin using the STM32F103C8T6 bluepill board
99 parts11 - 2 layers83.8 × 91.4 mm
Tangnano20k vectrex
ryomuk/tangnano20k-vectrex
Tang Nano 20K top level module for Dar's Vectrex
109 parts11 - 2 layers
- 2 layers71.1 × 50.8 mm
Power supply and amplifier
roybaer/sound_source
Design documents for Disney Sound Source (DSS) compatible hardware
34 parts9 - 2 layers94.6 × 25 mm
