AVR Atmega328 clock for 4 module P10
ARDUINO clock for module P10
Atmega328P
IN74HC245A
DS1307
DS18B20
TSOP2138 TSOP34836 TSOP4836
Crystal 32768 Гц
Crystal 16.000 мГц
Sheme and PCB http://github.com/mollex/avrclock/wiki Real video http://www.youtube.com/watch?v=7xwmAovFiZE