README.md

neopixel-binary-clock

Binary clock using Neopixels, ESP8266 and DS3231 real time clock.

Libraries used

• esp8266
• NeoPixelBus by Makuna
• Rtc by Makuna

Code used

• NTPClient example from esp8266

Timezones

The program is configured to display CET, but this can be changed in timezone.h. Daylight saving time is also implemented.

Wiring

Please check before connecting your hardware, this information might be wrong on some breakouts.

NeoPixel

NeoPixel data is RX-pin on NodeMCU. I used 5 1x8 NeoPixel strips. Month, day, hour, minute and second have their own strip, so some NeoPixels are unused. The program uses the following offsets to address the pixels:

• Second: 0
• Minute: 8
• Hour: 16
• Day 24
• Month: 32

DS3231

• SDA -> GPIO04 (D2)
• SCL -> GPIO05 (D1)