Passive Infrared Sensor The PIR Sensor detects motion Copyright (c) 2017 by Dr. E. Horvath

Passive Infrared Sensor Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath PIR Sensor Circuit Leads left to right on the back of the PIR Sensor Breadboard locations GND VCC OUT j1 j2 j3 breadboard location f2 jumper wire to 3.3 V PWR (Pin 1) breadboard location f3 jumper wire to GPIO 17 (Pin 11) breadboard location f1 jumper wire to GND (Pin 6). Connect the GND last. Remove the GND first, when taking the circuit apart. Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath PIR Sensor Circuit Copyright (c) 2017 by Dr. E. Horvath

Passive Infrared Sensor from time import sleep import RPi.GPIO as GPIO Import the GPIO library to interact with the GPIO GPIO.setmode(GPIO.BCM) Set to the Broadcom mode to access the pins by the functions PIR = 17 Monitor GPIO 17 GPIO.setup(PIR, GPIO.IN) try: while True: print("Waiting...") sleep(0.1) # Do not use up CPU cycles

Passive Infrared Sensor if GPIO.input(PIR) == 1: print("PIR detected") sleep(1) else: print("Waiting for passive infrared sensor") sleep(0.1) except KeyboardInterrupt: print(“Exiting ...”) finally: GPIO.cleanup() Set the pins back to a safe state

Copyright (c) 2017 by Dr. E. Horvath Sending emails import smtplib from email.mime.text import MIMEText fromaddr = 'Your email address' toaddr = 'Reciever email address' username = 'Your email address' password = 'Your password' Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath Sending emails Create a gmail account Go to https://www.google.com/settings/security/lesssecureapps Access for less secure apps Turn on Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath Sending emails msg = MIMEText('This Raspberry PI stuff is awesome') msg['Subject']='PYTHON WITH RASPBERRY PI ANOTHER TEST' msg['From'] = fromaddr msg['To'] = toaddr server = smtplib.SMTP('smtp.gmail.com:587') server.ehlo() server.starttls() server.login(username,password) server.send_message(msg) server.quit()) Copyright (c) 2017 by Dr. E. Horvath

LEDs Color Maximum Voltage (check datasheets) Red 2V Green/Yellow/Orange 2.2V Blue/White 3.7V Violet 4V Ultraviolet 4.4V Infrared 1.6V

Copyright (c) 2017 by Dr. E. Horvath Ohm's Law V = IR Voltage = Current * Resistance Current – measured in Ampheres Use mA in the lab 1000mA = 1A 1mA = 0.001A Resistance – measured in Ohms Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath Ohm's Law Maximum current on any GPIO pin 16mA Output from a GPIO pin is 3.3 V 3.3V – 2.2V = 1.1V 2.2V to power the green LED V = IR 1.1V = 16 * 0.001 * R R = 1.1/(16 *0.001) = 68.75 Ohms for maximum brightness The minimum you should use is 100 Ohms Use higher resistance over 1KOhm when experimenting Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath Compute the Current I = V/R I = 1.1/R R is your resistor's value in Ohms Refer to the color chart Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath Resistor Color Chart Copyright (c) 2017 by Dr. E. Horvath

Four Band Resistor Code Bands 1 and 2 First Digit and Second Digit Black 0 Brown 1 Red 2 Orange 3 Yellow 4 Green 5 Blue 6 Purple 7 Gray 8 White 9 Band 3 Multiplier or Number of Zeroes Black * 1 Brown * 10 Red * 100 Orange * 1,000 Yellow * 10,000 Green * 100,000 Blue * 1000,000 Purple * 10,000,000 Gray * 100,000,000 White * 1,000,000,000 Gold *0.1 Silver * 0.01 Copyright (c) 2017 by Dr. E. Horvath

Four Band Resistor Code Band 4 Percent Tolerance Black - Brown 1% Red 2% Orange - Yellow - Green 0.5% Blue 0.25% Purple 0.1% White - Gray - Gold 5% Silver 10% No color 20% Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath Connecting an LED Light emitting diode (LED) connections Longer lead is positive (anode) breadboard location j24 Shorter lead is negative (cathode) breadboard location j22 470 Ohm Resistor breadboard location i30 breadboard location i24 breadboard location h30 jumper wire to GPIO 22 (Pin 15) breadboard location f22 jumper wire to GND (Pin 9) Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath Connecting an LED Copyright (c) 2017 by Dr. E. Horvath

Copyright (c) 2017 by Dr. E. Horvath Turning on an LED import RPi.GPIO as GPIO green_led = 23 GPIO 23 GPIO.setup(green_led,GPIO.OUT) Set the pin to be an output GPIO.output(pin_number,True) Turn on the LED sleep(interval) GPIO.output(pin_number,False) Turn off the LED GPIO.cleanup() Set the GPIOs back to a safe state Copyright (c) 2017 by Dr. E. Horvath