I need to distance the Power Dock/Omega2 from the RFID & NFC Expansion and I want to know what pins I need to use so that I don't have to extend the full set of pins. I've gathered information from the different sources below.
Expansions in general use 5 volts
The PN532 NFC RFID Easy Module uses 5 volt in UART mode ("Standard 5V TTL for I2C and UART")
The PN532 chip communicates with the Omega serially via UART1
UART1 on the Expansion Dock & Power Dock is broken out on pins "RX1" and "TX1"
So, based on the above, I need to use the four pins representing 5V, GND, RX1 and TX1 to create extension cables between the RFID & NFC Expansion and the Power Dock in order to get it to work properly. Is that correct? I just want to be sure so that I won't fry the expansion board (or make it misbehave in some way). The RFID & NFC Expansion is the only expansion attached in this particular setup.