[youtube= Mad Scientist Labs brings us this easy to make LED blinking circuit. The idea is to put a LED in series with a small blinking incandescent bulb from a string of Christmas lights. The bulb… ...

This is a simple blinking led circuit powered from 220V that can be used to mark special places or as voltage indicator. The voltage from the mains charges the capacitor through R1 resistor and D1 ...

I used to make blinking jewellery with them in the 1980s. I have 3 left , ... Just go back over your circuit to see if you can find a mishap, and do check that the led is functional.

4: Try blinking the LED and debugging Now that we're ready, let's actually debug it. First, connect the Raspberry Pi Pico 2 to a power source and connect the Raspberry Pi Debug Probe to your PC.