The MiniPiio RS485 is a RS485 to TTL 3.3V converter board specifically designed to work with the Raspberry Pi.
It uses 3.3V components and is completely voltage compatible with the Raspberry Pi.
The board connects directly to the Raspberry Pi’s UART Rx and Tx to provide RS485 half-duplex communications.
The board uses the industry standard MAX3485* for signal conversion.
An industry standard 9-Way D Connector (Male) and a 3-W screw provides provides the serial connection to the outside world.
Pin-out (9W D):
Pin-5 = 0V Pin-8 = B (Data +) Pin-9 = A (Data -)
In addition, the GPIO signals can be used to control the MAX3485* DE and !RE as needed.
PIIO and MiniPIIO are modular electronic building block for the Raspberry Pi and may be used with our RPi Expander2.
*or Equivalent IC
You can find them on our Tindie store.