No ESC beeps

I recently wired up my new quad. I tested with a multimeter at the PDB pads that all four ESC connections have 12V power. When connected to the battery I hear a few beeps I assume come from the CC3d controller, and my Rx powers on and binds correctly. I get get battery voltage readings on the Tx.

I am using LittleBee 20A ESCs and I don't see any lights or hear beeps from them. When I connect the vehicle to OpenPilot GCS I reach the ESC calibration screen. I pass this without beeps and without lights from or on the ESCs. Then when I try and set the neutral settings for motors I cannot get them to spin.When plugging in the battery the motors do twitch a little at first.

I've ordered a programming module to see if I can calibrate the ESCs individually but right now I have no way to confirm the ESCs are working at all. What recommendations does anyone have to verify this?

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