I want to use PX4FLOW with OmniNXTF7 flight controller. This flight controller has 3.3v I2C SCL/SDA and no PullUp-resistors.
I use the PX4FLOW only with I2C port, with 5v at VCC (not 3.3v).
- Does PX4FLOW work with 3.3v or 5v at I2C SCL/SDA, if it is powered with VCC 5v?
- Are the PullUp-resistors (to SCL/SDA) of the PX4FLOW pulled to to 3.3v or 5v?
My guess is that PX4FLOW working with 3.3v at I2C SCL/SDA even if it is powered with 5v at I2C port. I added schematics, maybe someone can see if I2C is working at 3.3v if PX4FLOW is powered with 5v.