This Project
“Automatic Night Lamp with Morning Alarm” was developed using
Microprocessor.
It is the Heart of the system. The sensors are made with
help of LDR which are Light Dependent Resistors, whose Resistance is
inversely proportional to the Light falling on it. The LDR converts the
light energy into electrical energy and this variable electrical energy
was converted into digital signal (0 or 1) by using the timer IC555.
The
Timer IC output goes low when light falls on the LDR and the timer IC
output goes high when the LDR was placed in dark.
Circuit
Flowchart
Block Diagram
Program
Please check the Power supply pins & Port number before you connect the Hardware to the Trainer Kit
0001 00000002 0000 PORTB EQU 0DH
0003 0000 PORTC EQU 0EH
0004 0000 REG EQU 0FH
0005 0000
0006 0000 .ORG 4100H
0007 4100
0008 4100 3E 82 MVI A,82H ;Set control word for 8255
0009 4102 D3 0F OUT REG
0010 4104 3E 20 MVI A,00100000B ;switch off LED and alarm
0011 4106 D3 0E OUT PORTC
0012 4108
0013 4108 DB 0D UP: IN PORTB
0014 410A FE 20 CPI 20H
0015 410C CA 2F 41 JZ NIGHT ; jump if night
0016 410F 3E 60 MVI A,01100000B ;Switch on music and off light
0017 4111 D3 0E OUT PORTC ;OUT to port C
0018 4113
0019 4113 0E 14 MVI C,14H ;call delay routine for 10sec
0020 4115 2A FF FF SEC: LHLD 0FFFFH
0021 4118 3E 09 MVI A,09
0022 411A CD 05 00 CALL 0005
0023 411D 0D DCR C
0024 411E C2 15 41 JNZ SEC
0025 4121
0026 4121 3E 20 MVI A,00100000B
0027 4123 D3 0E OUT PORTC
0028 4125
0029 4125 DB 0D N1: IN PORTB
0030 4127 FE 20 CPI 20H
0031 4129 C2 25 41 JNZ N1
0032 412C C3 08 41 JMP UP
0033 412F
0034 412F 3E 00 NIGHT: MVI A,00H ;switch on LED
0035 4131 D3 0E OUT PORTC ;
0036 4133 C3 08 41 JMP UP
0037 4136
0038 4136 .END
Number of errors = 0
Posts
which software have you used to simulate the above project.
ReplyDelete