Relay

29 boards

KiCad boards from 18 GitHub repositories tagged “relay”, the most starred first; open any of them in PCBKit.

2 layers104.8 × 72.1 mm
SST V2 4
mcbittech/souliss-smart-thermostat-WiFi
ESP8266 WiFi Smart Thermostat based on Souliss IoT Framework
53 parts110GPL-2.0
4 layers100 × 94 mm
Picohome2
racerxdl/picohome
Raspberry Pi Pico Home Automation using CAN Bus
123 parts90Apache-2.0
2 layers
CurrentSensor
antevens/boatcontrol
A Relay PCB with a socket for a Raspberry Pi or Nvidia Jetson to control everything on a boat
21 parts36
2 layers163 × 72 mm
OM-64DO
OpenModbus/OM-64DO
A compact industrial-grade 64-channel Modbus RTU output module.
231 parts21GPL-3.0
2 layers90 × 71 mm
Power extender
StarGate01/power-extender
Hardware and software for a power and IO extension PCB with current monitoring and I2C interface.
78 parts5MIT
2 layers50 × 61 mm
ENP KIT-232-485-CAN
Enapter/ucm-kit-open-hardware
Enapter UCM Kit – open hardware for connecting your energy devices.
32 parts4
6 layers268 × 230 mm
Rf board
PE1RGU/hf-antenna-switch
Remote HF antenna switch: 3 radios x 4 antennas (path to 8), outdoor relay unit with a hardware safety chain, controlled over Cat6 from a shack interface. KiCad 10, open hardware, designed together with an AI.
357 parts2CERN-OHL-S-2.0
2 layers78.7 × 87.6 mm
Relay board-2
balazsgrill/pcb-relay-board-2
Printed Circuit Board for 5V Relays x8
50 parts1CC0-1.0
2 layers38.1 × 19.1 mm
LED Relay
mikelawrence/LED-Relay
Motorcycle LED Relay replacement PCB.
45 parts1MIT
2 layers50 × 50 mm
Adapter relay
rtyle/ping4pow
Monitor (ping) network resources as a condition for powering a connected device.
22 parts1GPL-3.0
2 layers102 × 84 mm
RelayCard
chapppy/Board-for-Relay-Card
Design of schematic and PCB for Relay Card control over USB and CAN based on STM32
81 partsGPL-3.0
2 layers55.9 × 69.9 mm
Arduino ir relay
danshick/arduino-ir-relay
Schematic, PCB, custom footprints, plots, and code for an arduino based remote control relay rig
17 parts
2 layers17 × 23 mm
Capa de Control Inferior para Rele
HefestoPrimal/Capa-Control-Inferior-Rele
Mini placa PCB para la parte inferior de un relevador para accionarlo directamente, cuenta con fase de potencia integrada para microcontroladores y salidas NA, C y NA del relé
10 parts
2 layers30 × 40.1 mm
REL1SW01
mlab-modules/REL1SW01
Dual MOSFET or single Relay switching module.
22 parts
4 layers100 × 80 mm
Bluepill Relay Carrier-2CH
SimulatedFlow/kicad-board-2026-07-16-bluepill-relay-carrier-2ch
STM32 Bluepill 2-channel relay carrier board - baseboard for two relays with screw terminals. Hand-solderable THT, bare PCB. KiCad source files.
25 parts
4 layers100 × 80 mm
BluePill SmartNode RS485
SimulatedFlow/kicad-board-2026-07-16-bluepill-smartnode-rs485
STM32 Bluepill SmartNode - RS485 bus node carrier with 2 relays for Modbus / field bus setups. Hand-solderable THT, bare PCB. KiCad source files.
32 parts
4 layers80 × 70 mm
BluePill Relay Carrier
SimulatedFlow/kicad-board-2026-07-18-bluepill-relay-carrier
STM32 Bluepill relay carrier board - single-channel relay baseboard with screw terminals. Hand-solderable THT. KiCad source files.
25 parts
2 layers74.5 × 63 mm
Relay board v2
slimmsehli/RelayBoard
Relay Board for 250VAC/10VDC controlled by 5v
33 parts
4 layers90 × 47 mm
Picohome relay
racerxdl/picohome
Raspberry Pi Pico Home Automation using CAN Bus
44 parts90Apache-2.0
2 layers50 × 61 mm
ENP KIT RL1
Enapter/ucm-kit-open-hardware
Enapter UCM Kit – open hardware for connecting your energy devices.
29 parts4
2 layers70 × 70 mm
2x1 as
PE1RGU/hf-antenna-switch
Remote HF antenna switch: 3 radios x 4 antennas (path to 8), outdoor relay unit with a hardware safety chain, controlled over Cat6 from a shack interface. KiCad 10, open hardware, designed together with an AI.
16 parts2CERN-OHL-S-2.0
6 layers340 × 126 mm
Backplane
PE1RGU/hf-antenna-switch
Remote HF antenna switch: 3 radios x 4 antennas (path to 8), outdoor relay unit with a hardware safety chain, controlled over Cat6 from a shack interface. KiCad 10, open hardware, designed together with an AI.
24 parts2CERN-OHL-S-2.0
4 layers152 × 122.5 mm
Controller board
PE1RGU/hf-antenna-switch
Remote HF antenna switch: 3 radios x 4 antennas (path to 8), outdoor relay unit with a hardware safety chain, controlled over Cat6 from a shack interface. KiCad 10, open hardware, designed together with an AI.
93 parts2CERN-OHL-S-2.0
4 layers60 × 107 mm
Rf iso backplane
PE1RGU/hf-antenna-switch
Remote HF antenna switch: 3 radios x 4 antennas (path to 8), outdoor relay unit with a hardware safety chain, controlled over Cat6 from a shack interface. KiCad 10, open hardware, designed together with an AI.
4 parts2CERN-OHL-S-2.0