Confused with how to add ubec for ESC that doesn’t have built in bec.
Please help, any comment would be great
ESC without BEC are the best. Why? Short answer: Separating high noisy power from sensitive electronics such as receiver, GPS, compass ect… This is like real full size aviation of any kind.
A BEC or in real term voltage regulator is regulating the voltage say from a 2S Lipo battery (2 x 4.2V or 8.4V) to 5V which can power your PixXX your GPS/Compass and your telemetry transceiver.
Of course best regulators are linear regulator NOT switching ones. Why?: Short answer: Switching voltage regulators are noisy and defeat the insulation advantages gain using opto insulated ESC.
As for example here is a good one: 8 amps 5 V Linear voltage regulator
A small 1.3 or 1.5A 2S little lipo is not expensive or heavy.
Hope this help.
Henri