I2c pullups needed

Xiao rp2040
seeed .uf2
.96 oled, rtc clock

Thonny is telling me I need pullup resisters, so i tried 3v, 5v, 4700ohms

  1. what voltage 3v or 5v to pull it up to?
  2. what resistance?

Do not connect anything that tries to apply more than your CPU’s Vdd. The CPU of XIAO rp2040 operates at 3.3V, so pull them up to 3.3V.

4.7K is commonly used for pullups and should work.