DoubleClock is a dual timezone alarm clock, with sunrise simulation and music player

Beside displaying two clocks with their respective timezones, this connected alarm clock is meant to provide a soft and natural wake-up at the end of your sleep cycle, like the Philips Wake-up Light but not overpriced. After a certain delay, a music can be played (like sound of birds or any MP3) to make sure you wake up gradually.

The choice of red 7 and 14 segments 4-digits display is to give a retro look, 80's style (you can choose any color for your displays, as long as it works with i2c protocol).

This alarm clock can also act as a bedside light if the led strip is powerful enough. It has been designed for 12v or 24v led strip but any voltage should do.

A model for a 3D printed case is available in the Case/ directory.

• Single control button
• Captive portal on first boot to configure Wifi
• Sunrise simulation (PWM) for a smooth wake-up.
• Light sensor for adaptive britghness
• Configurable numbers of alarms (need recompilation)
• Support for two music file slots (Chime and Buzzer)
• Configurable delays for Chime music and Buzzer music when the alarm is on
• mDNS advertisement at doubleclock.local
• MQTT connection to send events (alarm on, alarm off...)
• Custom NTP server (to avoid cloud dependencies)
• JSON API and web page configuration

A simple web page is available at http://doubleclock.local/index.html to configure the alarms.

Javascript required.

A JSON API is available for configuration at http://doubleclock.local/settings.

{
  "login": "",                  # Authbasic. Password not displayed.
  "debug": true,
  "serial": true,               # Send logs on serial port
  "ntp": "pool.ntp.org",
  "delays": {
    "chime": 200,               # Seconds after alarm has been triggered
    "buzzer": 500               # Seconds after Chime has been triggered
  },
  "mqtt": {
    "server": "192.168.1.1",    # Disabled if 0.0.0.0
    "port": 1883
  },
  "alarms": [
    {
      "hour": 9,
      "minute": 31,
      "primary": true,          # primary means the alarm time is against the primary timezone.
      "days": [
        true,                   # Monday
        false,                  # Tuesday
        false,                  # ...
        false,
        false,
        false,
        false
      ]
    },
    {
      "hour": 6,
      "minute": 52,
      "primary": false,
      "days": [
        false,
        true,
        false,
        false,
        false,
        false,
        false
      ]
    }
  ]
}

To update the configuration, POST the same payload with the new values. All settings are stored into flash memory and are persistent upon reboot and power loss.

DoubleClock support HTTP Auth Basic authentication (but not https). By default, there is no login required. To enable authentication, set the login and password usng the settings API:

curl -X POST http://doubleclock.local/settings -d '{"login": "myuser", "password":"secret"}'

• ESP-12E (Node MCU board)
• YS-M3 (Mp3 player board)
• 2x 7-segments 4 digits with HT16K33 backback
• 2x 14-segments 4 digits with HT16K33 backback
• 1x Mosfet BS170
• 3x NPN 2N3904
• Photoresistor
• Resistors : 200, 1k, 4.7k, 10k, 22k, 39k
• Speaker
• Push switch
• Led strip
• 5v regulator board (if led strip not in 5v)

See Schematics for more details.

Compile this sketch with Arduino IDE and select board NodeMCU 1.0 (ESP-12E).

To upload the static assets to the flash filesystem, you need to install the plugin arduino-littlefs-upload. Then hit ctrl-shift-p and select Upload LittleFS to pico/ESP8266/ESP32. Make sure the serial console is closed before.

Copyleft 2024 - Nicolas AGIUS - GNU GPLv3