Does anyone know if it’s possible to use a USB to TTL serial cable for RS485 protocol?
The cable in question:
I would like to use above mentioned cable with Infinity integration on Bryant furnace without buying USB to RS485 serial converter.
Reading through, Rpi requires USB to RS485 serial converter.
I only require RX/TX pins TTL does support up to 3.3V, while RS485 recognize any differential voltage >200mV with a voltage range of -7V to +12V.
I guess I am answering my own question if anything over 3.3V will damage.
This is my go to cable for flashing sonoffs and don’t want to destroy it.
It’s been awhile, and not for Home Assistant, but from some work I was doing programming PLC’s bit I use a USB to RS-232 converter and then this device:
Good hunting…the key question I ask myself before I plug in any ‘Serial’ device be it TTL, RS-232, RS-485, RS-#$%$##$# is what are the voltages? This message comes from my drawer of ‘fried’ devices