I can get my quad to spin the motors using my Taranis X9D (bought from Quad Questions) in Baseflight, but they won’t spin when I unplug the USB.

So this is my first build, and I know I’ve gotten everything just right up until this point. I’ve plugged a USB into the Naze to set up Baseflight…and I’ve calibrated my ESCs, and all the motors are testing great and spinning in the correct orientation. I can use my Taranis X9D to control my throttle. So I hit save, and unplug my USB to test my Quad on its maiden voyage.

BUT to my utter disappointment, it does NOT take off. The motors don’t even budge. My engines are ARMED, and I’ve got all the settings exactly as they were when I was testing the motor…except this time the USB isn’t plugged in.

So TL;DR: My quad only starts spinning its motors when it is plugged in via USB + battery. I can’t take off only using the Battery (and of course my receiver/transmitter which work just fine).

I have a ZMR250 kit from Mini Quad Bros. It uses an Overcraft (batch 4) PDB. Naze 32, connected to a 1.5mAh 3S battery.

Any ideas? Any additional info I can provide?