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I thought of a similar idea a couple of months ago, it works like this:-The transmitter can send digital data over time, which the reciever collects and sends to an mcu. The mcu can then interpret a digital binary signal and provide more than just the 2 regular channels of outup. You could even use more than 1 device per frequency if you could encode an id into each mcu linked receiver
hi Jklv,if you are going to be using micro controllers any way i don't see the advantage of using a commercial R/C unit.you can buy RF pair of transmitter and receiver modules for as low as #10.connect each of these to a micro controller's UART and you have as many channels as you have I/O pins on your micro controller.here's a 2Ch example that could be easily scaled up:http://www.serasidis.gr/circuits/RF_remote_control/RF_remote_control.htmsearch for conversation on this forum for "radio module UART" etc as it's been discussed before.good luck,dunk.
Also, its not to hard to hack a rc controller to work from a computers serial port. Even I manged to do it as my first project.
2.4Ghz and 1 mile... visible range only i believe.You can use 2 servros on same channel but they will turn the same. Google for Y-cable.What is wrong with RC plane transmitters and receivers? You can get like 6(7?) channel stuff. Ah from laptop... probablly there are some RC transmitters that can be controlled via computer. Dunno for sure.