Simple arduino clock using ESP8266, ezTIME NTP library and MAX7219 LED display modules.
- install latest arduino + ESP8266 support, ezTime library, esp8266-hw-spi-max7219-7seg library
- change your timezone, WiFi SSID and password in the source
- upload into ESP8266
Connect first MAX7219 LED display to the ESP this way:
- GPIO13 -> DIN
- GPIO14 -> CLK
- GPIO05 -> CS
Second display is chained to the first one:
Power both displays from +5V (Vin), don't use 3.3V output of ESP (this will fry the 3.3V voltage regulator on ESP board).
See https://github.com/BugerDread/cryptoticker-by-dread-cz if you want to turn them into Bitcoin / altcoin ticker (uses the same HW setup).
