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• 6x PWM header pins for servo control (2.54mm pitch)

  • 2 are placed to be connected to ESCs

• 1x input XT60-M connector

  • designed for 3S battery (12V input)

• 2x output XT60-F connector

  • 12V output for up to 2 ESCs

• 1x U.FL connector for external RF antenna

  • Connected to the RF IC. Impacts RC performance.

• 1x chip antenna for ESP-32C3

  • Can be used for WiFi flashing.

Usage

This board is designed to use a single 3S battery for input power. This will split the power into two output XT60 connectors, and feed to the buck converter, which, in combination with an LDO, powers the rest of the device.

The power rail is rated for an absolute maximum of 16.9V, accounting for LiPo battery overcharging and input transients (voltage spikes from hot-plugging a high-inductance battery). Usage of a battery with an anti-spark connector is recommended.

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Schematic

Altium 365 | 12V-5V 4A Buck with ELRS

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