LED-Uhr

PlatformIO project for ESP8266 based LED ring clock.

Shows a simplified clock an a 12 LED circle:

• hour is marked by white LED
• minute is marked by yellow LED
• second is marked by lightblue LED

The minute and second display is set forward if the corresponding 5-minute value is reached. This means, if the white LED shows 1 o'clock and the yellow LED is on "9 o'clock", the time is between 1.45 and 1.49. If the minute "hits" the hour LED, it will turn to orange color.

Hardware:

• Wemos D1 Mini or similar with ESP8266
• 12-LED circle with WS2812 LEDs

Software:

• PlatformIO IDE with installed ESP8266 support
• Adafruit Neopixel library (https://github.com/adafruit/Adafruit_NeoPixel)
• this repository

Pin assignment

LED Pin	ESP8266 Pin
VCC	5V
GND	GND
DIN	D4

Software configuration

• set your WiFi access point SSID and password in your system environment variables WIFI_SSID and WIFI_PASS or change corresponding entries in platformio.ini lines 24 & 25
• supports ArduinoOTA (over-the-air update) to flash the controller. Set your OTA password in platformio.ini line 26. To remove that support, comment out lines 18-21 in platformio.ini

Instructions for use with Arduino IDE

• install "Adafruit Neopixel" via library manager
• rename main.cpp to LED-Uhr.ino
• add the following lines to LED-Uhr.ino:
  • #define STASSID "your-wifi-ssid"
  • #define STAPSK "your-wifi-password"
  • #define OTAPWD "your-ota-password" (if you like to use ArduinoOTA)
• remove main.h and platformio.ini, it's not needed on Arduino