Navigation Lights

Standard Navigation Lights circuit drives LEDs directly from the PIC. This limits maximum current to about 20mA per output. Outputs include 2 asynchronous strobes, a Landing Light, and 3 permanent Lights. Three servo positions are detected, selecting either all outputs ON, all but Landing ON, or all OFF (use channel 5 to control. Mix in the throttle channel to turn on the Landing Light at low throttle!).

LEDs should have series resistors in their leads (in addition to the on-board 100 Ohm resistors) to set the desired current. Depending on LED requirements, it may be possible run two or more LEDs in series or parallel on the same cable.

PIC12F629/75 can be programmed in system (especially useful for SMD version). Supply power through the servo connector (+5V, GND, and Vpp to signal input), and Clock/Data through the LED outputs. Keep wiring short!

Source code (PIC12C508/9 or 12F630/75) updated.gif

Eagle PCB layout new.gif

Nav Lights 1 Nav Lights 2 Beaver Lights

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Helicopter Navigation Lights circuit obtains high current output using discrete FETs. The servo input controls 2 Strobes and 3 fixed outputs. There are also 2 continuous (non-switched) Strobes.

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Source code for Helicopter Navigation Lights (PIC12C508/9 or 12F630/75)

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