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UniDisplay Power Supply

The UniDisplay is a handy little device for setting up the UniLog or viewing data without having to take a PC to the field with you.

As supplied it is powered from the UniLog, but this presents problems when using it with an opto coupled Rx lead – no power to the UniLog unless the motor battery is connected, and like most people in F5B I don’t like messing around with the plane while that battery is connected.

My solution is to supply the UniDisplay from a 4.8v battery via a 3.3v regulator built into an SM extension lead. I also use another exstension lead permanently plugged into the UniLog so I don’t even have to dig it out of the fuselage to connect the UniDisplay.

I give no guarantees, but the circuit shown in the diagram has worked for me for over a year now.

 

About Alan Flockhart

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