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.
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.
