Also, I noticed that cheap tx and rx only have 3 pins, Vcc, Gnd and Data. I would assume that the Data pin works by outputting high and low voltages to communicate with the arduino.
Based on this assumption, my question is, can I use a rx on the slave glove WITHOUT a 2nd arduino? (to do this I would connect the data pin to the Gate of the N Mosfet, and make it go HIGH for how long the interval is).
Is my reasoning wrong?
TX & RX implies some kind of [u]serial communication[/u] (RS-232?). Bytes are converted to bits and one bit at a time is transmitted, and of course the receiver has to re-construct the bytes. There are various protocols and the transmitter (TX) and receiver (RX) have be using the same protocol and the same data-rate etc. Both the transmitter and receiver need a microcontroller, or some kind of clock and logic.
(The Internet uses serial communication... One bit at a time...)
If you just want to read the state of one or more switches you can use a single binary (high/low... on/off) digital input so you don't need "TX" and "RX".