Powering the APM and receiver with a power module

I've just received my first APM and am trying to work out how to set up the electronics. I have looked at the schematics post but I still have questions regarding how to power my APM board and receiver from one power supply with a power module.

I created the simplified diagram below to try and clear things up for myself. Does this set up look correct?

The jumper is removed in this set up.

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  • Hi Mark,

    I don't use the APM power module.  I prefer to use a 5V power supply from Futurelec:

    http://www.futurlec.com.au/Mini_Power.jsp

    It gives me 5.00V under all circumstances and that is the secret of a reliable APM.

    As to your diagram I don't think you need the UBEC.

    If you want to use the APM Power Module with JP1 out the receiver will get power from the APM via where the RX connects to the APM.  This will allow the ESC, as long as it has a BEC which most do, to power the servos.

    If you just want to use the FutureLec power supply then just connect a two wire connector from + and - from the power supply to the one input channel to the APM.  Then just connect the RX to the APM with whatever connectors you have and it will power up from the APM.

    I actually use a 4 wire conductor to connect the first 4 signal wires from the RX to the APM.  Then I just run channel 5 (the mode control channel for me) with a 3 wire connector that takes power signal and ground from the RX to the APM.

    Hope this helps

    Attached is my wiring however it has a bit more than I actually did.  I did not implement the battery sharer and now the 5V power supply comes straight off the flight battery.  Also in the diagram is a HobbyKing manual changeover.  I can knock the APM completely out of the loop if it ever locks up.  I fly planes not quadcoptors obviously.

    APM Wiring.jpg

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