Started working on a small project to learn more about manufacturing pcb’s and SMPC’s (switch mode power converters)
Its a driver for LED’s in toy cars. It drives 2 white LED’s @ +5Volts from a coin cell battery down to 2.5 volts.
The code will auto detect what type of led is connected and drive it with around 1 mA witch sound like nothing but its perfectly visible. it can drive red LEDs with real low Forward voltage to but then it bypasses the SMPC and uses a simple Resistor to drop the voltage .
Front two white LED’s and rear 2 red LED’s
A button allows the LED intensity to be changed