HomeKit Gate Controller for Centurion D5-Evo Gate Motor

HomeKit gate controller for Centurion (Centsys) D5 Evo gate motor

This project implements a HomeKit-compatible gate controller using an ESP32 microcontroller and the HomeSpan library, specifically designed for Centurion (Centsys) D5-Evo gate motors. It enables remote control and status monitoring of the gate with Apple HomeKit.

Features

• ✅ HomeKit Integration: Seamless control via the Apple Home app using the HomeSpan library.
• ✅ Gate Control: Open and close the gate with a relay trigger.
• ✅ Status Detection: Real-time detection of gate states (open, closed, opening, closing).
• ✅ Gate Status Detects when gate opens/closes from a different source (e.g. remote control, intercom, keypad).

How It Works

The system uses an ESP32 microcontroller to manage a relay and monitor the gate's operational state:

• Relay Control: The relay pin (GPIO 35) triggers the gate motor.
• Status Monitoring: The status pin (GPIO 39) monitors the gate's operation based on pulse patterns sent by the gate controller.
• Flashing Patterns: The gate signals its state using pulse patterns, where the duration of HIGH and LOW signals indicates whether the gate is opening or closing.
• Logic Level Conversion: A logic level converter is used to shift the gate's 5V status signal to a 3.3V input suitable for the ESP32.

The DEV_GATE.h class implements:

• update() – Triggered by HomeKit to open/close the gate.
• loop() – Continuously monitors the gate's state based on the input pin.

Hardware Requirements

• ESP32 microcontroller
• Relay module (for gate control)
• Logic level converter (5V to 3.3V signal conversion on status pin)

Wiring

+----------------------+
|        ESP32         |
|----------------------|
| GND  ----------------|-----> **Relay GND, Gate GND, LLC GND** 
| 3.3V ----------------|-----> LLC LV
| 5V ------------------|-----> LLC HV, Relay VCC
| GPIO 35 -------------|-----> Relay IN
| GPIO 39 <------------|----- LLC LV OUT
+----------------------+
                                
                                
+------------------------+ 
|      RELAY MODULE      |
|------------------------|
| IN  <---- GPIO 35      |
| NO  -----> Gate TRIG   |
| COM -----> GND         |
| VCC <---- 5V           |
| GND <---- GND          |
+------------------------+


 +---------------------------+    
 | LOGIC LEVEL CONVERTER     |    
 |---------------------------|
 | HV  <---- 5V              |
 | LV  <---- 3.3V            |
 | GND <---- GND             |
 | HV IN <---- Gate Status   |
 | LV OUT ----> GPIO 39      |
 +---------------------------+  


+----------------------------+  
|         GATE MOTOR         |
|----------------------------|
| GND  -----> ESP32 GND      |
| TRIG <----- Relay NO       |
| Status  -----> LLC HV IN   |
+----------------------------+

Only three connections need to be made to the D5 Evo Gate Motor:

1. Trig: this needs to be connected to ground for the gate to activate. I have connected this to a relay controlled by the ESP32
2. Status: this needs to be logic-level-converted from 5V to 3.3V. Connect to a GPIO pin of the ESP32
3. Com (ground, 0V): this is important for two reason: (1) status decoding and (2) triggering (activating) the gate. Because of (1), the gate must share a ground with the esp32.

Software Requirements

• HomeSpan Library
• Arduino IDE (for programming the ESP32)

Configuration

• Wi-Fi: Set credentials in main.ino.
• HomeKit Pin: Default pairing pin is 06533259.
• Pins: Adjust statusPin and relayPin if necessary.

Installation

1. Install the HomeSpan library in Arduino IDE.
2. Download and open both main.ino and DEV_GATE.h in an IDE.
3. Configure Wi-Fi credentials, HomeKit pairing code in main.ino.
4. Upload the files to your ESP32.
5. Pair the device with HomeKit using the code.

Future Improvements

• Obstruction Detection: Currently not implemented.

License

This project is open-source under the MIT License.

Contributing

Contributions are welcome! Feel free to submit pull requests or open issues for improvements and bug fixes.