Google "HM-TRP Telemetry". You'll get two pieces; one with a USB port for your computer and containing a USB to serial chip (just like the Arduino) and the other with 5V, GND, TX, RX lines that will interface with the remote Arduino easily.
Google "HM-TRP Telemetry". You'll get two pieces; one with a USB port for your computer and containing a USB to serial chip (just like the Arduino) and the other with 5V, GND, TX, RX lines that will interface with the remote Arduino easily.