![]() ![]() "I tried adding a small LCD display, with almost success. Voltage was around 3.8V - think I could draw a bit more power OK. " ran for 11 minutes before I started to worry about the water level in the boiler. Sure enough, the little engine - a Wilesco D6 with M66 dynamo, designed as an educational model of the sort of coal-fired steam engines, which would have driven industrial revolution factory equipment - proved up to the task. The display will show the runtime of the system. I've been tweaking this to minimise power consumption and believe it should run fine. "The setup is a Pico connected to a Pimoroni dot matrix display breakout. With an estimated power output of around 90mW, a microcontroller was the obvious choice of load. The next stage of experimenting with the toy was, of course, trying out other, more complex, electronics. ![]()
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