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# M5Stack COMMU Module Extend RS485/TTL CAN/I2C Port

**Type:** Product page · **SKU:** CE07618 · **Brand:** [M5Stack](https://core-electronics.com.au/brands/m5stack-australia)
**Page:** https://core-electronics.com.au/m5stack-commu-module-extend-rs485-ttl-can-i2c-port.html ([markdown](https://core-electronics.com.au/m5stack-commu-module-extend-rs485-ttl-can-i2c-port.html.md))

COMMU is a Muti-Communication-Interface-Converter. Integrated with 2IIC, 1TTL, 1CAN, 1RS485. Apparently COMMU has packed with most of series communications.

## Pricing

- **Price:** $20.70 (inc GST) — $18.82 AUD, exc GST
- **Quantity discounts:** 10+ $18.06 (exc GST) · 25+ $17.50 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 28 and Sep 08.

## How to buy

- **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=CE07618:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart.
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- **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there.
- **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works)
- **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt
## Description

COMMU is a Muti-Communication-Interface-Converter. Integrated with 2IIC, 1TTL, 1CAN, 1RS485. Apparently COMMU has packed with most of series communications.

Default connection: TTL - UART0, RS485 - UART2. Since ESP32 pin map is allowed for re-assign, you can re-assign or re-mapping the TTL or RS485 interface to other pins.

Be care about TTL Interface. It is a UART Interface actually by default. But you can switch it to connect with UART2 after changed those jumpers(J6, J7, J9, J10).

**Features**

- 2x I2C Interface
- 1x CAN Interface
- 1x RS485 Interface
- 1x TTL Interface
- CAN controller: MCP2515-1/SO
- RS485 Transceiver: SP3485EN-L/TR
 
**Includes**

- 1x M5Stack COMMU Module
 
**Specifications**

- Interface: I2C x2, CAN x1, RS485 x1, TTL x1
- CAN Controller: MCP2515-1/SO
- RS485 transceive:r SP3485EN-L/TR
- Net weight: 13.5g
- Gross weight: 24g
- Product Size: 54.2\*54.2\*13mm
- Package Size: 60\*57\*17mm
- Material: Plastic ( PC )

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/m/5/m5-stack-m011-1.jpg)