Using AUX1 RX/TX to communicate with RPI

makerbase-mks / MKS-Robin-E3-E3D

MKS Robin E3 E3D 32Bit Control Board 3D Printer parts with tmc2209 Uart mode driver For Creality Ender 3 CR-10

https://www.aliexpress.com/item/4000781744682.html

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Using AUX1 RX/TX to communicate with RPI #156

Open countcobolt opened 2 years ago

countcobolt commented 2 years ago

Hi, I would like to connect my RPI to the PSU of the printer, but was wondering, if it is possible to communicate with the mainboard over the RX/TX of Aux1. I currently have octopi installed on my RPI3 and connect via USB but would potentially move to a RPi Zero W and embed everything. Could I use the 5V/GND also of the AUX to power my RPI3 or Zero W in the future?

Kind regards

Steve

reefwarrior commented 2 years ago

hi Steve,

You can communicate with it using the RX/TX of aux1. What I have done was to connect the GND/RX/TX between the board and the rpi - and it works without a problem. You need to change the firmware tho - the first serial port declaration needs to change from '-1' to '0' in your configuration.h file.

Can't say about the power source tho.

Tinus