Using the hobby wing does not need a sensor to work. You setup gov sto and forget it.
In govsto mode you will set a 50% throttle curve, plug in, initialize, release throttle hold, spool up to mid stick, wait 30 seconds, hit throttle hold, unplug heli. Set your throttle output to desired head speed, plug back in and fly. No muss, no fuss.
In have not set this up in almost 4 years. That's how easy it is.