WiFi Clock

One more WiFi clock based on DS1339U and ESP8266. Requires 12V 1.5A power source.

Functionality

• 24 hours time format
• Automatic time sync (NTP server and interval can be configured)
• Auto brightness
• DST support
• Display options (on/off leading zero, on/off column blinking, do not blink in a specific period of time)
• Over-the-Air update

Main components

• ESP8266 - microcontroller
• DS1339U - real time clock
• PCA9685 x 2 - LED controller
• BH1750FVI-TR - light sensor
• MT2492 - step-down converter
• LM1117IMP-3.3 - voltage regulator