LED Timer

C++, JS, HTML, and CSS code written to run on an ESP8266.

Designed to be run on custom hardware, though could be hooked up with a level shifter.

Features

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• WiFi connected

  • Connect through LAN to an onboard web server.

• Password protected

  • Requires login to set timer, prevents unauthorized access.

• Add time to timer

• Customizable color light when idle

• Time slewing

  • Corrects the time using NTP time (requires internet access)
  • Adjusts the time by 125 ms every 10 sec if the time is off.
  • Internet check every 30 mins max.

• Reset Button

  • Clears passwords by overwriting passwords with random data and deletes all other files.

Libraries in Use

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FastLED

• Controls the LEDs

ESP8266Ping

• Determines if the device has internet access. Pings 1.1.1.1 to check.

ESP8266TrueRandom

• Generates random data for verification code which changes every boot.

NTPClient

• Note: Patched with this to prevent user offset on epoch time and the related parts of this to check for NTP packet validity.

• Connects to NTP server to get access to internet time.

• Used to slew time (by 1/8sec per 10 sec) if millis is either slow or fast.

License

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Licensed under GNU GPL v3 library.