project development & presentation day

Programming Development

The circuit had been draw and simulated by using PCB Wizard software. While the coding used in the PIC16F877A is in C Programming which had been compile and run by using C-Compiler software. Then, the programs are loaded into the PIC microchip. After that, the PIC is attached to the circuit to run the project.  The circuit connections for Smart Mailbox are as shown in Figure below.

The Circuit Connection

The sensor detects incoming mail and number of mail based on the calculation in the methodology. The data from the sensor are send to the PIC and converted from analog to digital signal. According to the data signal from the circuit that had been build, the data are send to the receiver.

After each program file was loaded into each microcontroller using PIC KIT programmer, IR Sensor and GSM Module was installed into the mailbox. Then all circuit board was switched on as Figure below.

The Circuit installed into the Mailbox

Before the letter inserted into the mailbox, the LED is turn GREEN to show the empty of mailbox. After the letter has been inserted into the mailbox, the LED turned on to the RED to inform the letter is inside the mailbox. The buzzer produces sound after few moments or GSM will send message to the user to inform the incoming mail.

 Overall Result Analysis of The Project

List of Connected Sensor/Actuator to the PIC

PIC I/O Pin	Connected To
	Sensor / Actuator	Function
RA0	IR sensor	To detect mail
RB0	Pin E LCD	Display message on LCD
RB1	Pin RS LCD	Display message on LCD
RB2	Pin R/W LCD	Display message on LCD
RB4	Pin DB4 LCD	Display message on LCD
RB5	Pin DB5 LCD	Display message on LCD
RB6	Pin DB6 LCD	Display message on LCD
RB7	Pin DB7 LCD	Display message on LCD
RC0	Red LED	Turn on red LED
RC1	Green LED	Turn on green LED
RC4	Push button 1
RC6	Pin 11 max232	Send data to GSM
RC7	Pin 12 max232	Receive data from GSM
RD2	Push button 2
RD3	Push button 3
RE0	Buzzer	Turn on buzzer