Motion-based Door Lock system using Raspberry Pi
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Motion-based Door Lock system using Raspberry Pi
Description
ABSTRACT
For Raspberry Pi Beginners, this project explains you about interfacing PIR Motion sensor with Raspberry Pi to control the Door lock. This system is implemented in interior door locks, which functions like opening the door when someone came near to the door. Raspberry Pi is a small sized PC, which is capable of performing every type of applications. Here PIR sensor used to detect the motion, which placed in front of the door, especially rooms having an Air conditioner. Whenever a person came in front of the door, PIR gets triggered and Raspberry Pi performs opening the door, After some defined time, the door gets automatically locked. Since we are using PIR sensor for motion detection system can able to detect the presence of humans of 180 degree
HARDWARE REQUIRED
- Raspberry Pi
- SD card
- Power supply
- VGA to HDMI converter (Optional)
- MCP3008 (ADC IC)
- PIR motion sensor
- DC motor for the door lock
SOFTWARE REQUIRED
- Raspbian Stretch OS
- SD card Formatter
- Win32DiskImager (or) Etcher
PYTHON LIBRARIES USED
- RPi.GPIO as GPIO (To access the GPIO Pins of Raspberry Pi)
- Time library (For Time delay)
CODE
import time import RPi.GPIO as GPIO GPIO.setmode(GPIO.BCM) # read SPI data from MCP3008 chip, 8 possible adc's (0 thru 7) def readadc(adcnum, clockpin, mosipin, misopin, cspin): if ((adcnum > 7) or (adcnum < 0)): return -1 GPIO.output(cspin, True) GPIO.output(clockpin, False) # start clock low GPIO.output(cspin, False) # bring CS low commandout = adcnum commandout |= 0x18 # start bit + single-ended bit commandout <<= 3 # we only need to send 5 bits here for i in range(5): if (commandout & 0x80): GPIO.output(mosipin, True) else: GPIO.output(mosipin, False) commandout <<= 1 GPIO.output(clockpin, True) GPIO.output(clockpin, False) adcout = 0 # read in one empty bit, one null bit and 10 ADC bits for i in range(12): GPIO.output(clockpin, True) GPIO.output(clockpin, False) adcout <<= 1 if (GPIO.input(misopin)): adcout |= 0x1 GPIO.output(cspin, True) adcout >>= 1 # first bit is 'null' so drop it return adcout # change these as desired - they're the pins connected from the # SPI port on the ADC to the Cobbler SPICLK = 18 SPIMISO = 23 SPIMOSI = 24 SPICS = 25 doorpin1=20 doorpin2=21 # set up the SPI interface pins GPIO.setup(SPIMOSI, GPIO.OUT) GPIO.setup(SPIMISO, GPIO.IN) GPIO.setup(SPICLK, GPIO.OUT) GPIO.setup(SPICS, GPIO.OUT) GPIO.setup(doorpin1, GPIO.OUT) GPIO.setup(doorpin2, GPIO.OUT) def door_open(): GPIO.output(doorpin1, True) GPIO.output(doorpin2, False) def door_close(): GPIO.output(doorpin1, False) GPIO.output(doorpin2, True) def door_stop(): GPIO.output(doorpin1, False) GPIO.output(doorpin2, False) while True: # read the analog pin PIR = readadc(0, SPICLK, SPIMOSI, SPIMISO, SPICS) #print("PIR_LEVEL:", PIR) #uncomment to display pir value if(PIR>1000): door_open() time.sleep(1) door_stop() time.sleep(5) door_close() time.sleep(1) door_stop() else: door_stop()
Additional information
Weight | 0.000000 kg |
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