Guru
Joined: 24/12/2017
Location: AustraliaPosts: 1694
| Posted: 03:12am 18 Feb 2024 |
From the rp2040-datasheet:
From that table if you are running the Pico at 3.3v then the maximum voltage on an I/O pin allowed is 3.3v + 0.5v or 3.8v.
Bill
PS I don't understand how ebbandflow's voltage divider works if the drawing is correct.