Multi-channel 12V light blinker

A PIC, 12 NPN transistors and a handful of other passive components.

This 12 channel light blinker has been connected to the lighting system of a train station scale model to simulate blinking light in different places and at different frequencies.

The “check panel” on the circuit, that shows with 12 mini-leds the output status, is very nice to see, but unfortunately I had not the chance to take a picture, but one day or another I’ll disassemble the full model to photograph the panel… :)

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