I thought I'd post this so others don't make the same mistake.
I had bought hkpilot and airspeed sensor from hobbyking, then bought 3DR DF13 cables, as I'd damaged the original hk cable.
What I didn't realise was that the pins are around the other way from the 3DR airspeed sensor, so because the cable didn't switch around ground and 5V, like the hobby king one does, the airspeed sensor heated up and all of a sudden GPS and telemetry stopped working.
After realising, I cut and soldered in reverse all of the wires and now it works OK, but I'm worried that I've done some damage and the airspeed sensor will fail in flight, or my soldering will fail.
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