2 layers32 × 61.5 mm
Boards using the PKMCS0909E4000-R1
38 boardsBoards in 27 GitHub repositories, designed in KiCad, that use the PKMCS0909E4000-R1 by Murata (-40℃~+85℃ 1.9mm 12.5V 4kHz 65dB 9mm 9mm Passive (Externally Driven) Piezoelectric SMD,9x9mm Buzzers ROHS). See how each wires it, with its parts, size, README and files; the PKMCS0909E4000-R1’s symbol, footprint and pinout are on its own page.
- 2 layers81 × 55 mm
- 2 layers74.9 × 20.3 mm
Rt soldering iron
kcuzner/rt-soldering-iron
Soldering iron driver board for Weller RT tips. A work in progress. Firmware in rust.
126 parts6 - 6 layers100 × 100 mm
- 6 layers36 × 124 mm
OpenDual Reader
nuerolynx/embedded-systems-lab
Arduino UNO R4 WiFi and ESP32 prototypes for access control, automation, displays, monitoring, and Bluetooth audio.
74 parts4 - 4 layers35 × 35 mm
Bluetooth tracker
adwjli/bluetooth-tracker
Bluetooth Tracker inspired by the Tile Mate Bluetooth Tracker, built around the Nordic nRF51822 Bluetooth transceiver.
25 parts3GPL-3.0 - 2 layers35.2 × 17.9 mm
- 2 layers65.3 × 64.1 mm
- 2 layers44.1 × 39.7 mm
SuitBit
XasWorks/system-synth-suit
Repo collecting design files for the "System" Synth suit, from schematics to concepts to programs! Follow along and build your own suit along~!
73 parts2GPL-3.0 - 2 layers40 × 70 mm
KinetiCoreDC
axpaul/KinetiCoreDC
Compact STM32G0-based DC motor controller board featuring TI DRV8874 H-bridge drivers, RS485 communication, optoisolated I/O, and hardware power protection.
183 parts1CERN-OHL-S-2.0 - 2 layers250.6 × 192.6 mm
- 2 layers56 × 43 mm
- 2 layers69.6 × 66.4 mm
Pomodoro pal
HeyPCB/pomodoro-pal
Pomodoro Pal: A tomato on your desk that keeps you focused for 25 minutes, without your phone. KiCad 10, heypcb.ai merch.
41 partsCERN-OHL-S-2.0 - 4 layers56 × 38 mm
- 2 layers65.1 × 30.3 mm
Desk timer
nshcat/desk_timer
[ ] For some reason, I needed to add "-isystem /usr/arm-none-eabi/include/c++/14.2.0" to the compilecommands.json entry for main.cxx in order for clangd to find the system includes.
35 parts - 4 layers76 × 72 mm
Keychain rev b panel
olerast67/emotion-keychain
Брелок с OLED-экраном и анимированными эмоциями
168 partsApache-2.0 - 4 layers15 × 35.1 mm
- 4 layers74.9 × 243.5 mm
- 4 layers100 × 100 mm
10k Hour Timer RP2040
smaroukis/rp2040-timer
An Eval Board for an RP2040 mcu + seven segment LED display + TM1638 driver + peripherals.
180 parts - 4 layers44 × 51.1 mm
Front mcu db64
stuperbad/LED-Watch
A round LED wristwatch: 132 small LEDs (12 hours, 60 minutes, 60 seconds as three concentric rings) driven straight from an AVR microcontroller, with an accelerometer to wake it.
218 parts - 4 layers
Dial me spinner main
tyevco/dial-me-spinner
A Bluetooth dial spinner about 70 mm across, built on the nRF52840. A heavy, balanced stainless flywheel ring spins around a stationary centre that holds a colour OLED and a ring of 48 addressable RGB LEDs.
209 parts - 4 layers50 × 50 mm
50x50 2 Layer
UC-Aerospace/Electrical-Tut-26
2026 Avionics tutorial example boards for UC Aerospace
86 parts - 2 layers90.2 × 64.4 mm
- 2 layers90.2 × 45.7 mm
