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CONTENTS

Module COMMU

SKU:M011

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Description

Module COMMU is a communication conversion module in the M5Stack stackable module series. It integrates 2 I2C interfaces, 1 TTL interface, 1 CAN interface, and 1 RS485 interface, meeting various communication conversion needs during development.

Note

Note: When using with Core2, the base needs to be removed to properly flash the program.

Features

  • Supports multiple communication protocols such as I2C, TTL, RS485, and CAN.

Includes

  • 1 x Module COMMU

Specifications

Specification Parameters
Interfaces I2C x2, CAN x1, RS485 x1, TTL x1
CAN Controller MCP2515-1/SO
RS485 Transceiver SP3485EN-L/TR
Material Plastic (PC)
Net Weight 13.5g
Gross Weight 24g
Product Size 54.2 x 54.2 x 13mm
Package Size 133 x 95 x 16mm

Schematics

PinMap

MCP2515 ESP32 Chip
CAN_CS GPIO12
CAN_INT GPIO15
CAN_SCK GPIO18
CAN_MISO GPIO19
CAN_MOSI GPIO23
I2C Interface ESP32 Chip
I2C_SDA GPIO21
I2C_SCL GPIO22

M5-Bus

PIN LEFT RIGHT PIN
GND 1 2
GND 3 4
GND 5 6 EN
CAN_MOSI 7 8
CAN_MISO 9 10
CAN_SCK 11 12 3.3V
U1_RXD 13 14 U1_TXD
U2_RXD 15 16 U2_TXD
IIC_SCL 17 18 IIC_SDA
19 20
CAN_CS 21 22
CAN_INT 23 24
25 26
27 28 5V
29 30

Model Size

Module COMMU Model Size PDF

Datasheets

Softwares

Arduino

UiFlow1

Easyloader

Easyloader Download Link Notes
Module COMMU Example Easyloader with M5Core download /

Video