Below is my Google AI search and what it told me! I realise from this thread I should use the data sheet not AI...LOL, from the same Google AI when I put the above statement to the question.From Google AI: "After boot: Pico GPIOs generally default to an input state with internal weak pull-ups/downs, but some (GPIOs 0-8) default high, while others (9-27) default low."![:)]( "Smile")
Google AI Overview
The statement is incorrect for the Raspberry Pi Pico (RP2040 chip).
All Pico GPIO pins default to an input state with internal weak pull-down resistors enabled on power-up. This means they will generally be read as LOW (0V) if left unconnected.
The behavior you described (GPIOs 0-8 pulled high, 9-27 pulled low) is characteristic of the full-size Raspberry Pi single-board computer, which uses a different Broadcom chip (e.g., BCM2835).
Statistics: Posted by MikeyStroud — Tue Jan 06, 2026 6:50 pm