Night Light Saver V5.0 using AT89C2051

Introduction The Saver V5.0 runs simple clock emulation program, turns a night light on and off with preset time, say 19:00 to 22:00 everyday. The design features low cost, easy installation, no battery backup and no EMI. The AT89C2051 uses external oscillator generated by schmitt trigger gate CD4093, ~680kHz. Reference frequency was derived from 50Hz

Night Light Saver V5.0 using AT89C2051 is a post from: ATMega32 AVR