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4 references4 manufacturers17 pin functions
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ATmega328P
ESP32
Dual-channel optocoupled relay circuit
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Arduino · BoardArduino Uno Rev3Rev3, socketed ATmega328P32 connections20 usable GPIOGPIOADCPWMSPII2C+5
Espressif · BoardESP32-DevKitC V4V4 with ESP32-WROOM-32E38 connections26 usable GPIOGPIOADCDACPWMSPI+9
Generic · Module5V Double Channel Relay Module 10ACurrent Kobee listing, board revision unconfirmed13 connections4 functionsRelay contactControl signalPowerGround
Raspberry Pi · BoardRaspberry Pi Pico Rev3Rev340 connections26 usable GPIOGPIOADCPWMSPII2C+6