Piko steam loco with dcc decoder + supercaps

A DCC mod project on an old Piko Steam loco. This little loco had really nice running characteristics even without a flywheel and so i thought it would be great to add a dcc decoder. And since it had some hidden space, it became a good target for my supercaps.

My favorite mod for this loco was the addition of LED lighting. The existing lights were dummy (just painted silver). I replaced them with 0603 SMD LED’s.

Decoder used was Digitrax DZ125

Below: The Supercap module below the DZ125 decoder (enclosed inside a Kapton tape). Lots of liquid tape used to secure things firmly but not permanently.

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The body and the shell. The dangling wires are for the LED lights. To keep with the prototype i did not make the lighting directional. Front lights are yellowish-white and rear lights are red.

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The power of supercaps. This photo was taken a minute after the loco’s DCC power was turned off. The LED’s drew about 20mA current.

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A nice finished loco stuffed with electronics !!

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About

I am a computer engineer living in the beautiful city of Austin,TX. While my day job is designing computer chips, I love to dabble in woodworking, metalworking, r/c and electronics.

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Posted in Electronics, Model trains

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