@bearer Thanks, ill check out the tutorial. I think I will still go with i2c though.

After some more research, and learning that most i2c errors come from things the differential buffer pair should take care of, im going to give this a try with i2c.

Can anyone point me to what is needed to implement a new temperature sensor class?

@bearer Interesting idea, but from what little I know about emulating SPI hardware slave it is quite an undertaking.

Then there's still have the issue of sending the sensor data over a distance. Maybe I could just continuously transmit it over a rs485 serial link.

Actually I am looking for a way to use a remote temperature sensor. The plan was to use Temp Sensor -> i2c sensor amplifier -> PCA9615 (i2c differential buffer)////cable//// ->PCA9615 -> i2c on Duet2.

I am open to using a small microcontroller to read my sensor and communicate with the duet2, but I am at a loss as to what that communication should be.

Is it possible to interface temperature sensors via i2c instead of the default method of SPI->MAX31856? I have an odd specific application for this, and am aware of the distance limitations of i2c.