Mini meteor lights - with schematic

These are a super-minimalist version of the classic meteor shower Christmas lights. They are very simple and operate from about 3V, meaning you could use these on a costume, or make strings of them.

If running from 5V a series resistor is required. I tested one next to another running at 3V and the resistor value that matched the 3V intensity was 150 ohm. You can use a higher value resistor if you want a more subtle effect or a longer run time on a power bank. 1000 ohms still gives a useful intensity.

The listing I got these from on Aliexpress is:-
https://www.aliexpress.us/item/3256805191562686.html
They should work out around $1 each.

Make sure you get polarity correct, as powering microcontrollers with the wrong polarity can damage them. A series resistor will assist in limiting damage from a polarity incident.


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