My clock
github.com
github.com
The DS1307 is a RTC (real time clock). The MAX7221 is an LED driver.
Maybe I’ll even add a picture of the hacked together curcuit.
More information can be found at http://nixpulvis.github.io/nixpulvis/projects/clock/index.ht...
https://github.com/nixpulvis/avrm https://github.com/nixpulvis/ds1307 https://github.com/nixpulvis/max7221