Electronics Projects, PIC16F84A Programmable Dual Timer Circuit article
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The timer circuit buzzer with voice warning unit and timing after the control relay outputs for there supply voltage of 12 volts DC. PIC16F84A 7805 Regulator Integrated supplied through the second and minute settings can be made probably the specified period asm code changed through time for a timer b selection can be made.
PIC16F84A Timer Circuit
Programmable Timer Circuit PCB schematic PIC16F84A pic assembly source code alternative link: pic16f84a-programmable-dual-timer-circuit.RAR alternative link2 alternative link3