I’m currently using a WNK 8010-TT submersible pressure transducers with I2C 3.3V. Unfortunately seven(a number) of the sensors have failed as water is leaking past the gland on the cable and wrecking the sensor. I’m wanting to change to a 4-20mA sensor as they are easier to get and hopefully more reliable and use less power than the i2c sensors that I am currently using. I’m unsure though how to boost the voltage from 3.3V to a level that the 4-20mA sensor will operate and then how to read the current draw. What I’m asking is if any one has done this with an MKR board powered by a 3.7V battery.