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CONTENTS

4-Relay

SKU:U097

Description

4-Relay unit is an integrated 4-way relay module which can be controlled by I2C protocol. The maximum control voltage of each relay is AC-250V/DC-28V, the rated current is 10A and the instantaneous current can hold up to 16A. Each relay can be controlled independently, each on it's own. Each relay has status (LED) indictor as well to show the state of the relay at any given time.

Product Features

  • 4-way relay
  • AC-250V/DC-28V/10A
  • LED status indication
  • I2C communication (0x26)

Include

  • 1x 4-Relay Unit
  • 1x Grove Cable(20cm)
  • 4x VH-3.96-4P Plug terminal

Applications

  • Digital signal switching
  • Programmable power switch

Specification

Resources Parameter
Maximum input voltage AC-250V/DC-28V
Rated current 10A
Maximum instantaneous current 16A
Communication I2C(0x26)
Net Weight 40g
Gross Weight 84g
Product Size 112*23*18mm
Package Size 125*65*22mm

EasyLoader

EasyLoader is a precise and fast program writer which has a built-in functionalities related to the 4-Relay unit. The Easyloader program can burn the firmware to the main controller board by simple easy to follow steps. Please install the corresponding driver according to the device type. Please click here to view the CP210X driver installation tutorial , M5StickC/V/T/ATOM series can be used without driver)

Download Windows Version Easyloader Download MacOS Version Easyloader

Description:
ButtonA switches relay number, ButtonB switches led sync/ async, Button C controls all relays

PinMap

M5Core(GROVE A) SDA(GPIO21) SCL(GPIO22) 5V GND
4-relay Unit SDA SCL 5V GND

Schematic

Protocol

  • Protocol type I2C
  • I2C Address: 0x26

Mode control Reg 0x10

Bit Desc R/W
7 R R/W
6 R R/W
5 R R/W
4 R R/W
3 R R/W
2 R R/W
1 R R/W
0 Sync Mode 0:Async 1:Sync R/W

RELAY control Reg 0x11

Bit Desc R/W
7 LED1 / 1: ON 0:OFF R/W
6 LED2 / 1: ON 0:OFF R/W
5 LED3 / 1: ON 0:OFF R/W
4 LED4 / 1: ON 0:OFF R/W
3 RELAY1 / 1: ON 0:OFF R/W
2 RELAY2 / 1: ON 0:OFF R/W
1 RELAY3 / 1: ON 0:OFF R/W
0 RELAY4 / 1: ON 0:OFF R/W
Note:The relay can only be controlled in synchronous mode, if the relay is controlled in asynchronous mode, it will not work.

Example

Arduino

UIFlow

UIFlow Functions

  • Get LED and relay mode
  • Set LED and relay mode
    • Synchronize
      LED and relay ON/OFF are synchronized.
    • Asynchronous
      LED and relay ON/OFF are asynchronous.
  • Get LED status(LED no.)
  • Set LED status(LED no., status)
  • Get relay status(relay no.)
  • Set relay status(relay no., status)