M5Stack Base26 Proto Industrial Board Module v1.1, RS485 Addon

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1

I purchased the M5Stack Base26 Proto Industrial Board Module v1.1
https://www.robotshop.com/products/m5stack-base26-proto-industrial-board-module-v11
which has an RS485 module that can be mounted.

I can’t seem to find any documents to indicate:

  1. How to Mount it. The sales picture indicates where it goes on the board, but the 3 connection on my M5Stack Core2 (AWS) show that these pins are “NC” (No Connection"). (Other references show “HPWR”)
  2. How does this module communicate with the M5Stack? I2C? SPI?
  3. What are the wiring connections? (is +/-12v required, is the Orange connector used?)
  4. Is there some Example code for the RS485?

I did find this document, but it doesn’t show the RS485 module:
m5-docs

Sir Michael

1 Like
3

Hi @SirMichael and welcome to our forum!

We contacted M5Stack support regarding your questions and here is a reply from them:

  1. Both NC and HPWR are fine and do not affect the installation.
  2. Communicate with UART.
  3. Two ways: connect the DC port on Base26 or connect the USB port on M5Core2.
  4. We do not have the code which is ready to use，but you can refer the following website: M5Stack/examples/Unit/RS485_SP485EEN at master · m5stack/M5Stack · GitHub
    Note: The vibration sensor of M5Core2 and M5 Base series are incompatible in mechanical design. So when using Base26 you need to disable the vibration sensor function on core2.

We hope this helps. Feel free to ask anything else.