Heltec V3- connect a external display on the 2nd I2C BUS

[andy2023]

Hello, I am slowly getting to grips with the new Heltec WifiDev V3. However, I have an issue for which I have not yet found a solution.
I would like to address the onboad display via the first I2C bus and another display via the second I2C bus using the U8G2 library. Unfortunately, I have too little experience with the wire library, so I need your help here.
Thank you very much!

[UniquePete]

See

WiFi LoRa 32 (V3) I2C SDA/SCL

I’m using the MIT (Daniel Eichhorn) SSD1306 library with the WiFi LoRa 32 V3 board, initialising the display with: SSD1306 myDisplay(0x3c, SDA_OLED, SCL_OLED); The I2C pins used for the display are pins 17 (SDA_OLED) and 18 (SCL_OLED), but they are not broken out so there does not appear to be any way to use this [first] I2C bus for anything other than the on-board display. To connect any other I2C device I’ve had to declare a second bus, as something like either: Wire1.being(SDA,SCL); or T…