Thank you

Thank you. Do I use the small black wire on the ESC's for anything

Which black wire? Show us a photo.

Most GND wires are black but not necessarily true.

Here's the picture

https://drive.google.com/folderview?id=1...dzT_J8ET7x

I saw your picture. All you need is to connect that black GND wire to any GND pad on the FC.

Does this look right

https://drive.google.com/folderview?id=1...KArimlNA64

I got this receiver
Happymodel ELRS PP 2.4GHz RX SX1280 EXPRESSLRS Nano Long Range Receiver (EP1 RX) https://www.amazon.com/dp/B092J2QJ8S/ref...T2HWD5A7AD?

There is a pinout or whatever in the fourth picture on Amazon. How do I hook this up

I will suggest you redo the VBAT wire at the XT60, you can solder it parallel on top rather than sideward.

Your can connect the ELRS receiver to UART 1 or Uart 3. I want to avoid these UARTS because its a hassle getting the FC into DFU mode but I see not other full UART broken out except UART 6 but I assume there is inversion on it. Also test with a multi meter to find out which %v pad gets power when you plug in just the USB as you will want the receiver to power up for configuration etc.

Following the wiring as such:
FC RX --> ELRS TX
FC TX --> ELRS RX
FC GND --> ELRS GND
FC 5V --> ELRS VCC

I'm going to use this

TCMMRC ESC 50A BLHeli_S 4-in-1 3-6S Electronic Speed Controller https://www.amazon.com/dp/B08M67KJ6N/ref...UTF8&psc=1

Is it plugged in correctly
https://drive.google.com/folderview?id=1...TF6b-hK9ms

Does the Bat+ wire go to 5v on the FC

Where does the CURR wire go

BAT+ is VBAT or Battery voltage. Don’t, you will fry your FC if it only take 5v.

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Are you still using the Omnibus FC?

Thank you

Yes I am using the same Omnibus FC.

I think I had the connector in backwards. Here it is now

https://drive.google.com/folderview?id=1...TF6b-hK9ms

That Omnibus FC has a B+ or a VBAT pad you can connect the BAT+ from the ESC.

There is no analog current pad on your FC and the Current sensor is not essential on most setups unless doing long range. You can ignore the CURR wire and just rely on voltage.

Thank you

Is this a good way to put the capacitor in

https://drive.google.com/folderview?id=1...tWga-oVBwv

Where do the wires from the receiver go

https://drive.google.com/folderview?id=1...uNiR764daz

GND—>GND
VCC—>5v
IBUS—>RX

Thank you

Do you think it's set up okay

https://drive.google.com/folderview?id=1...JDDXFHSu1C

The receiver is set up gnd to gnd, vcc to 5v, and ibus to rx3
The ESCs are connected gnd to gnd, bat+ to vbat, ESC 1-4 to M1-4, and curr to nothing.