Coin size USB UART adapter

We made a tiny coin size USB UART adapter using CP2104 chip and hope it works for you.

That’s pretty cool and I could probably 1 or 5 of these just hanging around. That’s a sweet price.

Tell me, are the TX/TX of the UART 3.3v or 5v? Makes a diff for Raspberry PI usage (5v will fry the GPIO).


it is 3.3V