آموزش طراحی پروژه های سخت افزاری

This is an intermediate course about the credit card sized computer Raspberry Pi. This course is ideal for those who are interested in exploring the possibilities of Physical computing with Raspberry Pi. The course assumes basic knowledge on computer programming. However, knowledge of Linux operating system and Python programming language would greatly help you in getting up to speed. The GPIO pins on a Raspberry Pi are a great way to interface with physical devices like resistors and sensors with the little Linux processor. If you're a Python lover, there's a sweet library called RPi dot GPIO that handles interfacing with the pins. You will learn 3 complete hardware projects. The first one teaches you how to build a Walky Talky to make the most of your Raspberry Pi using Linux command. You just have to enter the desired frequency and you can talk to your neighbors without paying any operator charges! The second project involves building a light detector mechanism which let you know the amount of light available in the particular area. The Raspberry Pi hardware uses a computer program written in Python. You will hook the Pi up with light detector circuit and will use the program to know the sensor behavior upon different intensities of light. The third project teaches you to build a motion sensor based teddy bear which laughs upon waving our hand. The motion detector circuit will be embedded inside the teddy bear and will be controlled using a program written in Python to sense the motion. What are you waiting for? Enroll now! The course provides the complete source code for all the three hardware projects. The entire course can be completed over a fortnight, including the hardware assembly and coding in Python. By the end of this course, you can build your own Raspberry Pi controlled physical devices. You will also learn how to write your own python code to interact directly with the physical world. What are the requirements? Preinstalled Raspbian operating system in Raspberry Pi Model B or B+ Basic knowledge of Linux command Basic knowledge of Python Programming What am I going to get from this course? Over 32 lectures and 1.5 hours of content! Create Raspberry Pi based Walky Talky. Build light detector mechanism. Build a motion detector using PIR motion sensor. Step by step code to build the project. What is the target audience? This is an intermediate course meant for those who are interested in exploring the functionality of GPIO pins of Raspberry Pi. While the basic knowledge of Linux command and Python programming language will be helpful. Section 1: Walky Talky 1 Introduction and Hardware Requirements 02:18 This lecture will teach you hardware requirement to assemble walky Talky: a) Raspberry Pi (x 2) b) Radio Antenna (x 2) c) USB or 3.5mm microphone (x 2) d) Thin copper wire (x 2 meters each) e) External USB sound card (x 2) f) Jumper wires (x 2) 2 Concept behind FM frequency 02:17 This lecture will teach you:- a) Files required to enable frequency pin of Raspberry Pi. b) Mapping of virtual memory to physical memory. c) Concept behind FM frequency. 3 Attaching Antenna to Raspberry Pi 02:03 This lecture will teach you:- a) How to fix antenna. b) Solder thin copper wire to antenna. c) Attach jumper wire to antenna. d) Use external USB sound card for 3.5 mm microphone. 4 Circuit Diagram - Walky Talky 1 page 5 Linux command to transmit voice 03:15 This lecture will teach you:- a) Linux command to emit audio at specific frequency. b) Detailed explanation of the command. 6 Linux Command to emit audio frequency Text 7 Transmit your voice at particular frequency 01:18 This lecture will teach you:- a) Real time testing of Linux Command. b) Functioning of external USB sound card. c) Transmit your own voice at particular frequency. 8 Live testing of Walky Talky Project 01:59 This lecture will teach you:- a) Passing user defined frequency in order to establish communication. b) Live testing of Raspberry Pi based Walky Talky. 9 QUIZ - Walky Talky 3 questions Section 2: Light Detector Mechanism 10 Introduction and hardware requirements 01:38 This lecture will teach you hardware requirements to assemble Light detector mechanism:- a) Raspberry Pi (x 1) b) Light detector resistor (x 1) c) Ceramic capacitor (x 1) d) Leds (x 3) e) Buzzer (x 1) f) Thin insulated wire g) Soldering Iron 11 Detailed description of the hardware components 04:44 This lecture will teach you:- a) Project description. b) Detailed explanation about important hardware components. 12 Assembling the light detector circuit 02:49 This lecture will teach you:- a) Assembling the circuit. b) Detailed explanation about the wiring connection. 13 Circuit Diagram - Light detector mechanism 1 slide 14 Begin Code - Import the required Python library 02:53 This lecture will teach you:- a) Import the required Python library to program. b) Import the respective GPIO pins to interact with the hardware. 15 Code for light detector - Define light detector function 03:11 This lecture will teach you:- a) Define the light detector function. b) Pass user-defined pin as parameter. c) Comparing sensor reading after a delay of every half second. 16 Code for Light detector - Declare if block 03:42 This lecture will teach you to:- a) Compare the value of the resistor. b) Print the resistor value. c) Enable the respective GPIO pin. 17 Code for Light detector - ELIF condition 02:53 This lecture will teach you to:- a) Print the sensor value. b) Glow low light LED if resistor value falls between zero and ten. 18 Code for Light detector - Else condition 03:53 This lecture will teach you to:- a) Print the resistor value. b) Enable the respective GPIO pins. c) Clean up all the ports used in the program. 19 Error debugging and testing 01:18 This lecture will teach you:- a) Debug the run time error. b) Setup the output for user defined GPIO pin. 20 Source Code - Light detector mechanism 2 pages 21 Live Demonstration of Light detector mechanism 02:08 This lecture will teach you:- a) Real time execution of the program. b) Sensor behavior upon different amount of light source. 22 QUIZ - Light Detector Resistor 3 questions Section 3: Laughing Teddy Bear 23 Introduction and Hardware Requirements 01:41 This lecture will teach you:- a) Project description. b) Hardware requirements to build laughing teddy bear project. 24 Working theory of PIR motion sensor 02:12 This lecture will teach you:- a) Real time usage of PIR motion sensor. b) Working theory of PIR motion sensor. 25 Wiring and assembling PIR sensor circuit 02:05 This lecture will teach you:- a) Implanting circuit inside teddy bear. b) wiring and connection setup. 26 Circuit diagram - Laughing Teddy Bear 1 page 27 Begin Code - Import Python library required files 04:10 This lecture will teach you:- a) Load IDLE editor in Super User mode. b) Import the required Python Library. c) Enable the respective GPIO pins. 28 Code for Motion Detection - Define TRY block 03:01 This lecture will teach you:- a) Greet user when program executes. b) Assign global variable value. 29 Code for Motion Detection - Define If block 06:17 This lecture will teach you:- a) Define If block. b) Increment the counter value if motion is detected. c) Enable respective LEDs upon motion detection. d) Play music file upon motion detection. 30 Code for Motion Detection - Define Else block 04:23 This lecture will teach you:- a) Increment the counter value when no motion is detected. b) Enable the respective GPIO pins. c) Audio playback when no movement occours. 31 Code for Motion Detection - Define Exception block 02:57 This lecture will teach you:- a) Declaration of Keyboard Interrupt. b) Cleanup all the ports used by the program. c) Saving the file to the directory. 32 Error Debugging and testing 02:41 This lecture will teach you Error debugging for the following:- a) Typecasting Error. b) Case sensitive keyword error. c) Variable declaration error. d) Missing library error. 33 Source Code - Laughing Teddy Bear 2 pages 34 Live demonstration of laughing teddy bear 03:03 This lecture will teach you:- a) How to execute program in super user mode. b) Live testing of motion sensor. c) Python program output after execution of the program. 35 QUIZ - Motion Sensor 3 questions