Cost is not much of an issue, but say i do use an RF module is there a way i can 'pair the devices' like you can do with bluetooth. So in my case my LCD display will only get a signal from the balance board and not any other device in the room.Bluetooth with RS232 will cost much more than the $20 an XBee costs.
by Jake Hertz
by Aaron Carman
by Aaron Carman