I didn't use a chip at all.
I was aiming for the simplest, most economical system that would produce a decent result.
The circuitry is just a full-wave rectifier, with a high-value electolytic capacitor and trimmer pot forming
a c-r circuit which smooths the output voltage and provides a reservoir charge sufficient to give
a keep-alive function, the trimmer pot providing adjustable brightness, to allow for personal preference
and different ambient light levels.
All wheels are fitted with pickups.
You could do a chip version, but the only advantage would be remote brightness control, at a much
greater cost.
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