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... Electronics Projects, PIC16F84A Programmable Dual Timer Circuit "microchip projects, microcontroller projects, pic16f84 projects, " Date 2019/08/02