Shared ECU battery
With small and light installations there may be the temptation to dispense with the receiver battery and
run the receiver using a regulator from the ECU battery.
This is an absolute No-No, strongly discouraged and is surely an incident/accident waiting to happen
sooner than later.
The receiver needs to be able to power many servos at once and its supply voltage will vary
considerably as the servos are driven. It would be so easy for the varying supply to subsequently cause
what is known as a “brown-out”, a short dip in supply voltage that causes the ECU to suspend operation
or reset itself.
In either case it will shut off the engine, which is very bad news for heli fliers in particular as an
impromptu autorotation practice will result, so please don´t do sharing the battery, keep receiver and
ECU powered securely and separately.
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