2 layers120 × 130 mm
SingularitySurfer V1
nkrackow/SingularitySurfer-FPGA-Lock-In-Amplifier
Repository for the development of an FPGA based DSP Lock-In Amplifier
174 parts80MIT
Boards using the OPA1679ID
22 boardsBoards in 15 GitHub repositories, designed in KiCad, that use the OPA1679ID by Texas Instruments (-18V~-2.25V、2.25V~18V、4.5V~36V -40℃~+85℃ 0.0001% 2.5mA 4-Channel ESD protection SOIC-14 Audio Amplifiers ROHS). See how each wires it, with its parts, size, README and files; the OPA1679ID’s symbol, footprint and pinout are on its own page.
- 4 layers75 × 36 mm
EmoeNAP
Floyd-Fish/Noise-Amplifier
An ultra-low noise amplifier to measure low-noise LDO/OPA's wide band output noise, and many other interesting measurements. Referred to AN-159.
189 parts36GPL-3.0 - 2 layers49.5 × 106 mm
Supra board
jsenzel1/supra
is multimode Eurorack module with 4 different experiments in long term time. you can run up to 2 modes at once. use the 4 way joystick and buttons to interact with the modes on the oled
119 parts4 - 2 layers46 × 20 mm
- 2 layers100 × 50 mm
Purrtico TLA
greyboxaudio/Purrtico-TLA
Based on the AMEK TLA (Transformer Like Amplifier) balanced Input & Output circuits.
77 parts1MIT - 2 layers88 × 75 mm
Rubber drive hard
PhysicsDptAngers/GomuGomuNoDrive
This repository provides open-source hardware designs, physical bench measurement datasets, numerical simulation routines, and real-time DSP emulations for the Rubber Zener clipping topology.
62 parts1 - 2 layers68 × 128.5 mm
- 2 layers100 × 66 mm
- 2 layers50 × 100 mm
Theremin
harrydshill/LittleTheremin
A small fully-analogue theremin, with pitch and volume control
115 parts - 4 layers270 × 100 mm
- 2 layers97.3 × 97.8 mm
AS3397-Conductor
PhysicsDptAngers/polyUAnalog
Open source, analog and polyphonic synthesizer
54 parts88MIT - 2 layers73 × 100 mm
- 2 layers49.5 × 54.6 mm
- 2 layers55 × 55 mm
- 2 layers60 × 40 mm
Crow mic pod v3
misko/prompt2device
The separate vNext PCB skill and orchestrator package is available alongside the reference workflow below; existing projects keep their accepted toolchain until an explicit migration.
44 parts3MIT - 6 layers36 × 158 mm
- 4 layers36 × 95 mm
- 2 layers
- 4 layers36 × 106 mm
- 4 layers36 × 86 mm
- 2 layers50 × 100 mm
Theremin
harrydshill/LittleTheremin
A small fully-analogue theremin, with pitch and volume control
108 parts - 2 layers213.5 × 128.5 mm
Analog via
starlingcode/analog-via
Designs for an all-analog variant of the VIA meta crossfader
708 parts