If you designed on the Pico V1 to send I2C commands from your computer over HDMI, and you are upgrading to the Pico V2, I have some suggestions that might be helpful to you.
1. On the Pico V2, the HDMI cable is different from the Pico V1. Make sure you have the correct cable with the kit that you are using. I have seen serious issues on the Pico V2 when it was connected to the V1 cable due to different pinouts on these cables.
2. There is an extra pin on the V2 than the V1 that needs to be connected to communicate via I2C, making it a total of 4 pins (GND, SCL, SDA, and PWR).
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