Omnibus F4 Pro V3 power issue

Hardware Multirotors
1

Hi, I have a Omnibus F4 Pro V3 flight controller.
I have welded the wires from the battery to the flight controller for the voltage and current measurement (positive and negative), but when I connect the battery the flight controller doesn’t turn on.
When I connect the micro usb cable instead the flight controller turns on and works properly.

It should have a built-in bec or must I use an external bec?

2

Arlitra,

Can you post a photo of your setup?

3

The connection from the battery should go to the large pad labelled “BAT+” and the large pad on the opposite side of the board labelled “GND”.

4

I did what @cbf123 said.

On the top:

top
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I connected the positive of the battery to the pad labelled BAT+ and the positive of the power distribution board to the pad labelled MOTO_VCC

On the bottom:

bottom
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I connected the negative of the battery in parallel to the pad labelled GND and to the negative of the power distribution board.

5

Any suggestions to solve this problem?

6

That looks like it should work, though I’ve never used that particular board.

7

Hello, I have same problem for Omnibus F4 Pro V3 (from AliExpress in 2022 october). But I see voltage and current by inav configurator.

Also I have Omnibus F4 Pro V3 (2020/2021) and this board have power by battery.

I want use bec (from someone ESC) for Omnibus 2022 power

8

I finally solved the problem by connecting an external bec to one of the 5V pads.