RH-Plugin-Dropgate

A RotorHazard plugin that adds functionality for an automatic dropgate.

Features

• Control a dropgate using a Raspberry Pi GPIO pin.
• Configure the GPIO pin directly from the RotorHazard settings menu.
• Optionally set up a mirrored timer for advanced synchronization.

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Installation

1. Set up RotorHazard
   Install RotorHazard on your Raspberry Pi (Zero or compatible).

2. Add the Plugin
   Copy the entire contents of the RH-Dropgate-Plugin directory into the RotorHazard plugin directory on your Raspberry Pi.

3. Configure GPIO
   If you're not using the default GPIO pin (12), specify a different GPIO pin in the RotorHazard settings menu.

4. Optional: Use a Mirror Timer
   For advanced setups, configure a mirror timer as described in the RotorHazard mirror documentation.

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Required Hardware

Recommended Raspberry Pi

• Raspberry Pi Zero W / Zero 2 W
  Affordable and compact, ideal for this project.
• Other Options (RPI3/4/5)
  These are compatible but may require a different case and are more expensive.

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Power Supplies

• 12V BEC
  Ensure at least 5A capacity for the electromagnets.

  • Recommended: XL4015 or XL4005.

• 5V BEC
  Powers the Raspberry Pi.

  • Example: Mateksys 30 to 5V BEC.

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Relay

• 12V Relay
  Requires a minimum of 5A capacity (higher is better).
  • Example: TinyTronics 12V Relay.

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Electromagnets

• 12V 40mm Electromagnets
  Requires 2 magnets. Designed for 40mm versions, such as the 25KG JF-XP4020 model.
  The dropgate's round bar may reduce the magnet's efficiency, so choose stronger magnets when possible.
  • Example: JF-XP4020.

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Connectors

• XT60E Connectors
  • 2x XT60EF (Female).
  • 3x XT60E (Male).

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Optional: Micro USB (OTG) Ethernet Adapter

While the Raspberry Pi Zero W has WiFi, a wired connection is more stable.

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Double-Sided Tape

Use tape to secure the relay, 5V BEC, and 12V BEC to the case.
Recommended: Thick, heat-resistant tape (e.g., "gecko tape").

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M3 Screws

• 4x M3x6mm: For the lid.
• 4x M3x16mm: For the Raspberry Pi Zero W bracket.
• 6x M3x12mm: For the XT60 connectors.

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3D Prints

• 1x Case
• 2x Magnet/Pole Holders

3D print files are located in the /prints folder.

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Other Hardware

• 32mm Tubes: Cut to desired lengths/heights.
• Aluminum Rod: Matches the length of your dropgate banner.
• Metal Rod Ends: Attach to the aluminum rod to stick to the magnets.