In short, what I try to achieve is to connect a sensor to a MCU via I2C where the distance between the two is in the range 2-3 meters. I want to do this in the cheapest and simplest way i.e. with as little added hardware as possible. I'm considering the approach illustrated in the attached image where I both feed the sensor with power and SDA/SCL wires in a single cable. The sensor draws 1.25 mA during conversion. The only component that is put at the sensor-side is a decoupling capacitor of 100 nF. At the MCU-side I intend to place two pull-up resistors of 10k.
I'm aware that I2C is made for inter-circuit communication (probably with distances in the cm-range), but how far is it possible to stretch the distance without facing too many issues due to noise and too much capacitance caused by the long wires. I'm not a very experienced hardware designer (which my circuit might show) so I would like to hear your recommendations and experiences with this.