Hey there fellas, hoping someone can help me sort out what I'm missing here.. I have the receipt of what I bought but seem to be missing something. Over a year ago now I bought these and intended to get into the hobby, but I got a motorcycle accident and ruined my dominant hand for a good long time. I'm dusting off the old project now.

I think the original problem was that the motors have 4 wires and the FC looks like it wants them to plug into it and not be soldered on.. but what is it that I need to do to make that work, is there some compatible plug piece that I can attach them to?

https://i.gyazo.com/498d4e6d0c532b27bbb6...8a4592.png

Album of pictures
https://imgur.com/gallery/4onfVhc

We need some better pictures of all of the parts. A list of what you actually have would also be useful.

Uploaded some closer individual pictures

The motors have 3 wires (not 4 as per your original post) and if you want to use plugs then you will need Micro JST-1.25 3-pin connectors.

IMO crimping the wires for the JST plug alone are not worth the effort. Finding the plugs and crimps along with the crimping tool is added cost that does not add much value.

You can try and de-solder the plugs and direct solder wires to the AIO FC.

Your best option is to remove the ESC sockets from the FC. The easiest way to do that is to gently pull the plastic housing of the connector and it will come off leaving just the 3 pins soldered to the board. Then you can de-solder each of the 3 pins one-by-one. Just repeat for each connector. Then solder the wires of the motors direct to the solder points where the pins were. It doesn't matter what order they are soldered in so I suggest you keep the wires flat on the arms so it looks neater and solder them in that order to the FC pads. If any motors end up spinning the wrong way you can just reverse the direction of those particular motors using the BLHeli software.

Alternatively you could buy Plug-n-Play motors with the plugs already on them, and simply plug them in. Or buy a flight controller without plugs so it has solder pads for the motors.

Example of 2s motors with plugs already attached : https://www.getfpv.com/hglrc-aeolus-1202...motor.html

Example of Flight Controller with no plugs, but solder pads: https://pyrodrone.com/products/darwinfpv...-whoop-aio

I know you already have the parts, so you probably won't want to buy more, but just wanted to point out the option.

Hi noon,

At the top is the Caddx Firefly camera appears with attached VTX board complete with antenna.
To the right of that, the large board with connectors is the BetaFPV F4 AIO FC with motor connectors.
The little board with 2 antennas is the FrSky R-XSR receiver.
The motors and props are obvious.
I don't see the frame, but surely it is there somewhere.

I would keep the FC board and solder connectors to the motor wires.

Personally, I find it easier to solder wires to wires rather than mess with removing the connectors on the FC and soldering the motor wires directly. First, it is more challenging to remove those connectors that it appears and you run the risk of damaging something on the FC board. Also, soldering motors on an FC board that is mounted in a whoop frame is a really pain in the arse. Yeah, it is also a pain to get the craft assembled if you solder the motors to the FC before assembly. Also, if you need to replace a motor, it is much easier on a whoop if the motors are plugged in. 

In the future, you might get a set of motors that already have plugs. Now it is an easy plug-and-play thing. 

Directly soldering the motors on an open prop frame is workable, 
however, it is a royal pain on a whoop. {at least for me}

I use these JST 1.25 3-Pin connectors found on Amazon.

You might want to check out my Tiny-Black-85  build. It is an 85mm framed whoop.

Note that the motors had factory installed connectors, but the FC board that I used did NOT have connectors so I soldered connector pigtails in order to plug in the motors. If the FC board has the holes in it for the connectors, I will solder the connectors directly to the FC. This is a one and done deal and you only have to do it once. Now, you can change motors without all the hassle. This is the way that I do it.

Thanks all for the help, I'm back on the right track now. Removed the pins and directly soldered the motors on, I'm sure it will be a pain in the ass in the future but oh well I could use the practice and didn't want to wait to order anything in. Hopefully I can make sense of the setup after actually getting it all together, and dust off the sticks in a sim for a bit..