M5Stack 4-Channel Relay Module (STM32)

The M5Stack 4-Relay Module is a 4-Channel Relay module compatible with the M5Stack Core and Core2 series, with 4-channel mechanical relays (NO, COM). The module supports the I2C protocol and can be set by a jumper into active/passive modes. This relay module supports DC control only, and the Maximum load is 24W (DC 24V@1A). It is suitable for small load circuit control. Product Features

* Embedded with STM32F030F4:

* I2C communication (Addr: 0x26)

* Relay:

* 4x relay module (COM, NO interface)

* Maximum load 24W (DC 24V @ 1A)

* Supports two operation modes (selected by jumper).

* Active mode.

* Power input connects with relay NO port, to supply load directly.

* Passive mode.

* Power input does not connect to the relay port. The user's circuit needs an individual power supply.

* Power input (Support DC input only).

* DC 5-24V INPUT -> M5 BUS HPWR Bus (Controlled by jumper. When stacking with several different M5 modules, HPWR Bus can supply power to other modules that need 24V power, such as SERVO2 module, etc.)

* Development platform: Arduino, UIFlow(coming soon)

Package Contents

* 1x 4-Relay Module

* 5x Wiring Terminal 2.54mm-2P (green)

* 10x Pin Jumpers 1x Wiring Instructions

Specification

Specifications Parameters

Main Control Chip STM32F030F4

Communication interface I2C communication interface (addr: 0x26)

Support operating mode Active control / Passive control

Relay channels 4x(COM, NO interface)

Power input interface DC 5-24V

Load capacity 4 channels max. 24W (DC 24V@1A)

Relay terminal specifications 2.54-2P

Net Weight 37.2g

Gross Weight 37.6g

Product size 54.2*54.2*13.2mm

Package size 95*65*25mm

Resources

* Product Wiki

* Schematic

* 4 Relay Control

* 4Relay Module with M5Core

* 4Relay Module with M5Core2

* Library

* MODULE4RELAY

* Firmware

* MODULE4RELAY STM32 Firmware

Pinout

M5Core GPIO22 GPIO21 5V GND

4Relay Module SCL SDA 5V GND