You'll find a parameterized case model in case/case.scad. You can customize and compile this file into an STL using OpenSCAD. I recommend to set test_print to true in the customizer ("Other" tab) and ...

For this mode the timer prescaler is set to 8000-1 to generate a clock signal at 10KHZ. The auto reload counter register value is set to 10,000-1 so that we can generate a LED blink every 1 second.

We love having candles all around the cottage. But after reading about air pollution, soot, and the possibility of setting your house on fire, we started to get LED battery-powered candles to replace ...