From what Little I understand ------
I2C devices connect to Port A, Make sure the SDA and SCL pins of the new device yo want to use are connected to the correct pins on Port A (White&Yellow wires)
Next in UIFlow use:0_1636528384181_Screenshot 2021-11-10 at 07.12.50.png
To scan and list I2C devices connected to the ESP32. This list returns values in decimal and so you need to read the devices data sheet to find the hex address and convert the returned decimal list into hex values.
Next you need to read the data sheet to find out how to initialise the device and then how to read the device.
Once you have a code that returns the data that you need, you need to convert it to a library or driver, download the driver to the esp32 and then create custom blocks in the custom block creator0_1636528676537_Screenshot 2021-11-10 at 07.17.15.png
0_1636528687784_Screenshot 2021-11-10 at 07.17.46.png
That will allow you new driver/library to work in uiflow.