In my first project is PIR sensor connected to the raspberry pi.
import RPi.GPIO as GPIO
import time
import mosquitto ,os , urlparse
import mosquitto
client = mosquitto.Mosquitto()
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
PIR_PIN=21
GPIO.setup(PIR_PIN,GPIO.IN)
GPIO.setup(10,GPIO.OUT)
def on_connect(mosq, obj, rc):
print("rc: " + str(rc))
def on_message(mosq, obj, msg):
print(msg.topic + "pir " + str(msg.qos) + " motion" + str(msg.payload))
def on_publish(mosq, obj, mid):
print("mid: " + str(mid))
def on_subscribe(mosq, obj, mid, granted_qos):
print("Subscribed: " + str(mid) + " " + str(granted_qos))
def on_log(mosq, obj, level, string):
print(string)
mqttc = mosquitto.Mosquitto()
# Assign event callbacks
mqttc.on_message = on_message
mqttc.on_connect = on_connect
mqttc.on_publish = on_publish
mqttc.on_subscribe = on_subscribe
# Uncomment to enable debug messages
#mqttc.on_log = on_log
# Parse CLOUDMQTT_URL (or fallback to localhost)
cloudurl = raw_input("enter url of broker:")
url_str = os.environ.get('CLOUDMQTT_URL',cloudurl)
url = urlparse.urlparse(url_str)
# Connect
mqttc.username_pw_set('yhkjbhzj','5H2qvOhoLiVU')
mqttc.connect(cloudurl, 13452)
topicname=raw_input("enter topic name:")
# Start subscribe, with QoS level 2
mqttc.subscribe(topicname, 2)
# Publish a message
message=raw_input("message:")
mqttc.publish(topicname,message)
rc = 0
while rc == 0:
rc = mqttc.loop()
print("rc: " + str(rc))
while(1):
if GPIO.input(PIR_PIN):
print "motion detected"
camera.start_preview()
camera.capture('/home/pi/image%s.jpg' % counter)
counter = counter + 1
camera.stop_preview()
time.sleep (5)
else:
# Communication error message with the sensor
print ("Failed to read data from PIR sensor !!!")
This is following cloudmqtt link
https://www.cloudmqtt.com/
you get the pir sensor capture the photos to mqtt dashboard.
Hi, it's a very interesting blog. Thank you for sharing it will be helpful for engineering students to develop their own academic projects. I have found interesting projects in this Raspberry Pi Projects for Engineering Students
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