# module over RS485 using the Modbus RTU protocol. # It generates a continuous analog voltage waveform on Channel 5, # ramping from 0V up to 3.3V and then back down to 0V repeatedly, # by writing ...

23IO Modbus RTU Python Library for eletechsup PNP and NPN relay modules. Specification for RS485 comms can be found here https://485io.com/eletechsup/23IOA08_23IOB16 ...

We have previously written about various industrial Raspberry Pi systems and gateways that come with RS-485 built in, but we had yet to cover a dedicated RS-485 Raspberry Pi HAT. To fill this gap, ...