Arduino Pro Micro (3.3v, 8Mhz) Outputting 5v?

Other Hardware 3rd Party Boards
1

Out of curiosity, if I have an Arduino Pro Micro (3.3v, 8Mhz) and I supply 5v to VIN, should VCC be outputting 5V as well? I would assume it would output 3.3v, right? My digital pins are also outputting 5v.

No it is not a genuine Pro Micro, it comes up as a Lily Go board when identified. The crystal says 8Mhz but thats probably fake too. I guess thats eBay for ya...

Does anyone know a reputable seller that does have 3.3v 8Mhz Pro Micros?

2
3

So the manufacturer programmed the LiliGo boot loader instead of the Pro Micro boot loader.

You can simply test with blink or serial prints.

Also, if you upload code for a 16Mhz Pro Micro / Micro / Leonardo to an 8MHz Pro Micro you will no longer be able to upload without manually invoking the boot loader till you have uploaded a sketch that is compiled for an 8 MHz processor.

I bought originals from the local SparkFun dealer :wink: