25 Jun 2002 hudson   » (Master)

802.11 had some range issues that need to be worked out for controlling the helicopter, so we're back to using the "traditional" interface. However, I have hacked my Hitec RCD3500 to output its PPM signal on a servo port and can now process it with our onboard systems. Here is an image of the jumper soldered on the receiver.

This means that the 802.11 can be used for data logging, while actual control will flow over the FM PPM stream. We can also use the switches on the transmitter to toggle between different modes of augmented flight control.

As I mentioned earlier, I've written some details on decoding the PPM stream and some source code for the AVR ATmega163.

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