If data transmission via radio waves is not for you (see video #73 on the nRF24L01+ modules) then maybe good old 2-wire transmission using the RS485 interface is a better choice. The modules are to be ...

Pins must be defined in rs485.h if you are using the RAK5802 you should set your pins as follows. #define RS485_DEFAULT_DE_PIN (0xff) #define RS485_DEFAULT_RE_PIN (0xff) ...

They have question about SG(Signal Ground). In common case, RS485 cables all nodes using differential signals (+/-) and as well as SG, three wires in total. But in their end customer's system, it is ...

RS485 is compatible with the RS422 data standard and provides a 2-wire bus topology ... RS422 and RS485 interface chips to withstand an accidental short circuit from a conductor in the interconnecting ...

The LTC1685 high speed RS485 transceiver family addresses this problem by guaranteeing over temperature ... over 12,000 feet of category 5 UTP. At this data rate and cable lengths, one can obtain ...

I'm working on a project, which based on RS485 / RS422 peer to peer connection, with 30' UL2919 cable (12.5 pF/ft) in between. In general 30 feet is fairly short for an RS-485 interface, and I would ...