rs485 modbus

I've tried one from Waveshare and I can't get past the Engrish in the instructions. One would think its a simple thing. The Waveshare Modbus USB converter worked no problem so I know my cable is correct. The distance between the Modbus unit and the converter is only inches. I need a Modbus...

I’m developing a Modbus RTU architecture. The master of this architecture is my Beagebone Black , which I want to connect via RS-485 serial communication to my sensors. Since I’m using RS-485 converters (RS-485 Converter) which need a UART input as far as I understand, I was looking for sensors...

So about to buy parts for a Cub Scout model rocket launch control system! Yay!!! It is made of multiple boxes, each with a big 12V battery and an Arduino, networked together. At the launch pads, each Pad Box needs to power both the static 5V control logic AND 12V through relays to between one...