ESP32-MQTT-AlarmKeypad

Home Assistant Alarm keypad using ESP32 & MQTT.

https://github.com/TheHolyRoger/ESP32-MQTT-AlarmKeypad

More info & discussion: https://community.home-assistant.io/t/esp32-alarm-keypad/422952/2

v0.06

Author: TheHolyRoger

Contributions from:

• devWaves

Code can be installed using Arduino IDE.

Designed for the standard "4x4 Matrix Keypad" you can find online. Tested with the hard-button version but should work with the membrane version too.

Based off of the work from https://github.com/devWaves/SwitchBot-MQTT-BLE-ESP32

Default Button config:

• #: Broadcast Alarm ARM code
• D: Broadcast Alarm DISARM code
• B, C: Clear inputted code
• A: Ignored (Both my keypads have issues with B/C being confused with A)

Example LED config:

• SUCCESS: First (green) LED on pin 15
• FAILURE: Second (red) LED on pin 4
• WARNING: Third (yellow) LED on pin 18
• STATUS: Fourth (blue) LED on pin 19
• KEYPRESS: Second (red) LED on pin 4

Notes:

• Supports Home Assistant MQTT Discovery
• OTA update included. Go to ESP32 IP address in browser. In Arduino IDE menu - Sketch / Export compile Binary . Upload the .bin file
• Designed for 4x4 keypad but should work with 3x3 keypad by modifying keys in the advanced section.
• Also works if no code is set for arm/disarm, simply press the arm/disarm key without entering a code.

ESPMQTTTopic

<ESPMQTTTopic> = <mqtt_main_topic>/<host>

• Default = esp32_alarm_keypad/home_alarm_keypad

ESP32 will SUBSCRIBE to MQTT 'set' topic for 2 LED pins

• <ESPMQTTTopic>/status_light/set
• <ESPMQTTTopic>/warning_light/set

Send a payload to the 'set' topic. Strings:

• "ON"
• "OFF"

ESP32 will RESPOND with MQTT on 'state' topic for 2 LED pins

• <ESPMQTTTopic>/status_light/state
• <ESPMQTTTopic>/warning_light/state

Example payload:

• "ON"
• "OFF"

ESP32 will BROADCAST to MQTT 'code_exit' topic upon press of the Arm key with the entered code

• <ESPMQTTTopic>/code_exit

Use a Home Assistant automation to listen to this topic and then call the alarm arm service with the received code. Strings:

• <ALARM_CODE>

ESP32 will BROADCAST to MQTT 'code_entry' topic upon press of the Disarm key with the entered code

• <ESPMQTTTopic>/code_entry

Use a Home Assistant automation to listen to this topic and then call the alarm disarm service with the received code. Strings:

• <ALARM_CODE>

ESP32 will SUBSCRIBE to MQTT 'code_success' topic which flashes the LEDs, used for successful/failed alarm code entry

• <ESPMQTTTopic>/code_success

Use a Home Assistant automation to detect success/failure when arming/disarming the alarm, then send a payload to the 'code_success' MQTT topic. Strings:

• { "success": true }
• { "success": false }

ESP32 will RESPOND with MQTT on ESPMQTTTopic with ESP32 status

• <ESPMQTTTopic>

example payloads:

• {"status":"waiting"}
• {"status":"idle"}
• {"status":"boot"}
• {"status":"errorParsingJSON"}
• {"status":"codeSuccess"}
• {"status":"codeSuccessFail"}

Steps to Install on ESP32 - Using Arduino IDE

1. Install Arduino IDE

2. Setup IDE for proper ESP32 type https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-windows-instructions/

3. Install EspMQTTClient library

4. Install ArduinoJson library

5. Modify code for your Wifi and MQTT configurations

   Configurations to change can be found in the code under these line...

   /****************** CONFIGURATIONS TO CHANGE *******************/
   
   /********** REQUIRED SETTINGS TO CHANGE **********/
   

   Stop when you see this line...

   /********** ADVANCED SETTINGS - ONLY NEED TO CHANGE IF YOU WANT TO TWEAK SETTINGS **********/
   

6. Compile and upload to ESP32 (I am using a generic unbranded ESP32 with the "DOIT ESP32 DEVKIT v1" board setup in Arduino)

7. Reboot ESP32 plug it in with 5v usb (no data needed)

Example HASS Automations

Listen for ARM / Exit code

alias: '[Alarm] Keypad Exit'
description: ''
trigger:
  - platform: mqtt
    topic: esp32_alarm_keypad/home_alarm_keypad/code_exit
condition: []
action:
  - service: alarm_control_panel.alarm_arm_away
    data:
      code: '{{ trigger.payload | string }}'
    target:
      entity_id: alarm_control_panel.alarmo  # Adjust for your alarm entity
  - delay:
      hours: 0
      minutes: 0
      seconds: 1
      milliseconds: 0
  - choose:
      - conditions:
          - condition: not
            conditions:
              - condition: state
                entity_id: alarm_control_panel.alarmo  # Adjust for your alarm entity
                state: arming
        sequence:
          - service: mqtt.publish
            data:
              topic: esp32_alarm_keypad/home_alarm_keypad/code_success
              payload: '{ "success": false }'
    default: []
mode: single

Listen for DISARM / Entry code

alias: '[Alarm] Keypad Entry'
description: ''
trigger:
  - platform: mqtt
    topic: esp32_alarm_keypad/home_alarm_keypad/code_entry
condition: []
action:
  - service: alarm_control_panel.alarm_disarm
    data:
      code: '{{ trigger.payload | string }}'
    target:
      entity_id: alarm_control_panel.alarmo  # Adjust for your alarm entity
  - delay:
      hours: 0
      minutes: 0
      seconds: 1
      milliseconds: 0
  - choose:
      - conditions:
          - condition: not
            conditions:
              - condition: state
                entity_id: alarm_control_panel.alarmo  # Adjust for your alarm entity
                state: disarmed
        sequence:
          - service: mqtt.publish
            data:
              topic: esp32_alarm_keypad/home_alarm_keypad/code_success
              payload: '{ "success": false }'
    default: []
mode: single

Activating Warning/Status Lights

Simply add triggers for your alarm entity changing state to turn the corresponding LIGHT entities on/off.

E.g.

• ARMING: Turn WARNING light ON.
• ARMED: Turn STATUS light ON.
• DISARMED: Turn STATUS and WARNING lights OFF.
• ENTRY: Turn STATUS and WARNING lights ON.