How to calibrate ESCs without a radio

I got a quadcopter with an Xbee set for telemetry. I know it would be wise to get a radio but that is no longer an option. When I attempted my first take off, the quadcopter immediately flipped. I checked the APM orientation (made sure it was facing forward), props location, wiring, and ensured level ground. All that's left as far as I know is to calibrate the ESCs. However the documentation only explains how to do this with a radio.

How can I calibrate using my means of connection?

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  • You could use a servo tester or something that generates a pwm signal.
  • T3
    If you triple checked everything. Did you check to make sure you set orientation is + or X.
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