The new improved design uses a Microchip PIC microcontroller to provide these model railroading functions simultaneously;
note - This circuit has not been designed for DCC systems, however the non-directional indications and level crossing flashers will work with DCC
This little guy does everything. Green/red directional and non-directional indication AND crossing flashers at the same time!
CIRCUITRY
The PIC microcontroller takes care of all the de-bouncing and timing and switching functions which are usually handled by op amps and transistors. The resultant savings in parts allow the entire circuit to be constructed on a 1" X 3" circuit board.
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