ImmersionRC vortex 250 pro, Instruction Manual

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The connector has the following pinout, starting from the front of the quad:
1. +5V ~1A Maximum Current
2. Gnd
NOTE: Certain GoPro models will not power up without a battery installed, a little
research may be required to identify which ones .
7) Receiver PPM Connector (CPPM Only)
When using a classic PPM (a.k.a. CPPM) receiver, use the PPM connector, a 3-pin
JST-PH connector with the following pinout, looking from right to left in the below
image:
1. Gnd
2. +5V
Power to the receiver
3. PPM 3.3v, or 5v logic levels
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