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.
- Active mode.
- 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
- MODULE_4RELAY
- Firmware
- MODULE_4RELAY STM32 Firmware
Pinout
| M5Core | GPIO22 | GPIO21 | 5V | GND |
| 4Relay Module | SCL | SDA | 5V | GND |
