The Flashing Rear End Device (FRED) is the red light on the back of some modern trains today. It consists of a transponder, brake pipe monitor and flashing red light.
This project was to make a model of this device that is small enough to fit inside an N scale car, while also being usable for G scale.
It is capable of being fed between 2.9 and 25V and still function. It only draws 8 mA to run, and can be powered by either coin cell battery or track power if you have a truck with wires going inside.
There is a button on the board to toggle the mode between solid on (for the red light of a caboose) and blinking for a standalone FRED
Files and code can be found here or contact me to discuss shipping a complete one to you.
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