#!/usr/bin/python # pirCamera18.py # # Raspberry Pi day and night game camera # This project uses the Raspberry NOR Pi Camera module(infrared)for # night time video recording when something is detected. # It has an external IR LED Lamp that is enabled when motion is # detected to illuminate the area while capturing video. Once the # selected video duration completes the IR LED lamp is turned off. # # The design also has an LDR circuit to detect whether its day or # night. If it is nightime and motion is detected, the IR LED lamp # is enabled and lamp is disabled. If daytime is detected, the external # IR LED lamp is disabled. # # Connecting the external IR LED cable grounds a sense pin to detect # if lamp is connected. If the external IR Lamp is not detected, the # lamp output is disabled. # # After PIR detect, if night, GPIO pin 22 activates the relay # which drives the high current IR LED's (If connected). #*********Other notes *********************************** # # Sudo command to hard-set date and time on Raspberry: # sudo date -s "Mon Aug 12 20:14:11 PST 2014" # # To disable the Camera LED, modify: # /boot/config.txt # adding: disable_camera_led=1 # # Save ~20mA by turning off PAL/HDMI outputs by changing config.txt # adding: /opt/vc/bin/tvservice -off # # Kent Peterson # 15 June 2015 import os import RPi.GPIO as GPIO import time import picamera import datetime # add date time def getFileName(): # specifying .h264 encoded file return datetime.datetime.now() .strftime("%Y-%m-%d_%H.%M.%s.h264") video_duration = 5 # recording duration in seconds minimumspace = 1000000000 # minimum space to reserve # Define PIR input pin 7 (GPIO 4) PIR_Pin = 7 # PIR sensor input pin 7 # Define relay drive set pin 5 (GPIO 24) relay_set_pin = 18 # Output to Set Relay On IR LED array # Define relay drive reset pin 3 (GPIO 25) relay_reset_pin = 22 # Output to Reset Relay Off IR LED array # Define LDR sense circuit input pin 16 (GPIO 23) LDR_Pin = 16 # LDR circuit input 16 # Define IR Lamp sense circuit input pin 15 (GPIO 22) IR_Pin = 15 # Cable Sense circuit input 15 GPIO.setmode(GPIO.BOARD) # Sets up GPIO by pin# # Set up GPIO interface output for LED relay GPIO.setup(relay_set_pin, GPIO.OUT) GPIO.setup(relay_reset_pin, GPIO.OUT) # Set up GPIO interface input for PIR Sensor GPIO.setup(PIR_Pin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN) # Set up GPIO interface input for LDR circuit sensor GPIO.setup(LDR_Pin, GPIO.IN) # Set up GPIO interface input for LED cable detect GPIO.setup(IR_Pin, GPIO.IN) # Define the Pi Camera cam = picamera.PiCamera() # Reset detect flags detect = False # Set PIR detect flag to faulse day_time = True # Set as true in case LDR failure LED = False # Set LED to faulse try: while True: time.sleep(0.1) # First step is if any motion is detected detect = GPIO.input(PIR_Pin) #PIR detect? set new=TRUE, if not, loop day_time = GPIO.input(LDR_Pin) #is it day or night? True = Day LED = GPIO.input(IR_Pin) #is LED connected? if detect: # PIR is true when movement detection time.sleep(0.1) if day_time: # Day time detected print ("Day Time Detect") # Make sure that IR LED Relay is off GPIO.output(relay_reset_pin, False) # Turn off LED's # Is the disk full? check before creating file. # First step below is to determine remaining disk space disk = os.statvfs("/var/") totalAvailSpaceNonRoot = float(disk.f_bsize*disk.f_bavail) print "Available space: %d Bytes " % (totalAvailSpaceNonRoot) if totalAvailSpaceNonRoot > minimumspace: # Disk space available? print("Available Space OK") # Turn on camera here fileName = getFileName() # generate time-tagged filename cam.start_preview() cam.start_recording(fileName)# Start recording time.sleep(video_duration) # Duration for video recording # Stop camera recording cam.stop_preview() cam.stop_recording() # new video captured!! print("Stop Recording") print("*********************") else: print("Available disk space too small") GPIO.output(relay_reset_pin, True) # Turn off LED's time.sleep(0.02) # relay pulse width GPIO.output(relay_reset_pin, False) # reset pulse complete GPIO.cleanup() # cleanup all GPIO print("GPIO Cleaned up, Aborting Program") break # stop program - ran out of disk space else: # Night time detected print ("Night Time Detect") # Only enable relay if LED cable is connected. if LED: # Cable not detected, do not drive relay print ("LED Cable Not Detected") time.sleep(video_duration) else: # Cable detected, drive relay print ("LED Cable Detected") # Turn on IR LED Relays GPIO.output(relay_set_pin, True) # Turn on LED's time.sleep(0.02) # relay pulse width GPIO.output(relay_set_pin, False) # set pulse completed # Is the disk full? check before creating file disk = os.statvfs("/var/") totalAvailSpaceNonRoot = float(disk.f_bsize*disk.f_bavail) print "Available space: %d Bytes " % (totalAvailSpaceNonRoot) if totalAvailSpaceNonRoot > minimumspace: time.sleep(1) print("Available Space OK") fileName = getFileName() # generate time-tagged filename # Turn on camera here cam.start_preview() cam.start_recording(fileName) # Start recording time.sleep(video_duration) # Stop camera recording cam.stop_preview() cam.stop_recording() # new video captured!! print("Stop Recording") print("*********************") else: print("Available disk space too small") GPIO.output(relay_reset_pin, True) # Turn off LED's time.sleep(0.02) # relay pulse width GPIO.output(relay_reset_pin, False) # reset pulse complete GPIO.cleanup() # cleanup all GPIO print("GPIO Cleaned up, Aborting Program") break # stop program - ran out of disk space # Turn off Relays GPIO.output(relay_reset_pin, True) # Turn off LED's time.sleep(0.02) # relay pulse width GPIO.output(relay_reset_pin, False) # reset pulse completed else: time.sleep(0.1) # Cleanup code except KeyboardInterrupt: # If CTRL-C GPIO.output(relay_reset_pin, True) # Turn off LED's time.sleep(0.02) # pulse width GPIO.output(relay_reset_pin, False) # pulse complete GPIO.cleanup() # cleanup all GPIO print("GPIO Cleaned up")