My #hamradio club had an “intro to #arduino” lab today. It was the first time I made any type of circuit since a physics lab my freshman year of college. Here are some examples of increasingly complex blinking lights.

I’m still not sure what I’ll use this for (which is why I never got into Arduinos in the first place) but it was fun building these simple circuits!

@waltman how old is that Arduino? USB type B port and the size of that chip says it's a classic!
@philw It's an Arduino Uno R3. They're still being made and I just bought mine from Amazon a few weeks ago!
@waltman I'm mostly tinkering with esp32's these days. For integration with Home Assistant. Currently trying to get a 7.5" eink display working with one