As if we haven't seen enough Aiptek R/C switches, here is yet another, this time designed around a PIC 12F683. I designed this nifty circuit using a preprogrammed PIC 12F683 controller, a piezo element, two 10K ohm resistors, a .1uF capacitor and a 1N4148 signal diode. This neat device allows you to program switch-on point and switch/stick direction. If the circuit senses that there exists no servo signal, a piezo beeper is sounded. This can be used as a model-finder. Next time your plane gets lost in the high grass, you can simply turn off your transmitter and a second later, the beeper continually emits beeps, allowing you to locate the downed plane. The circuit also has a built in trigger delay that does not allow the Aiptek camera to attempt to take pictures faster than it can store them to memory. These user-programmable functions are very easy to use.