Wire everything up
Step 5SH1106 Display
3.3V rp2040 → VCC SH1106
GND rp2040 → GND SH1106
Pin0 rp2040 → SDA SH1106
Pin1 rp2040 → SCK SH1106
TP223
5V rp2040 → VCC TP223
PIN28 rp2040 → GND TP223
PIN29 rp2040 → I/0 TP223
SH1106 Display
3.3V rp2040 → VCC SH1106
GND rp2040 → GND SH1106
Pin0 rp2040 → SDA SH1106
Pin1 rp2040 → SCK SH1106
TP223
5V rp2040 → VCC TP223
PIN28 rp2040 → GND TP223
PIN29 rp2040 → I/0 TP223