Security Alarm project 16f877 microcontroller Board 2×16 lcd indicator alarm circuit connected to the keypad on the necessary adjustments can be made. Circuit diagram pcb drawings, asm source, hex codes, alarm installation, lcd menu information (in English). Alarm circuit... Electronics Projects, Security Alarm Circuit with PIC16F877 LCD "microchip projects, microcontroller projects, pic16f877 projects, " Date 2019/08/03