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Welcome to our repository of electronics projects. We make electronics projects with ESP32, ESP8266, Arduino and Raspberry Pi related with Home Automation.

This book covers the fundamentals and significance of 2-D materials and related semiconductor transistor technologies for the next-generation ultra low power applications. It provides comprehensive coverage on advanced low power transistors such as NCFETs, FinFETs, TFETs, and flexible transistors for future ultra low power applications owing to their better subthreshold swing and scalability. In addition, the text examines the use of field-effect transistors for biosensing applications and covers design considerations and compact modeling of advanced low power transistors such as NCFETs, FinFETs, and TFETs. TCAD simulation examples are also provided. FEATURES Discusses the latest updates in the field of ultra low power semiconductor transistors Provides both experimental and analytical solutions for TFETs and NCFETs Presents synthesis and fabrication processes for FinFETs Reviews details on 2-D materials and 2-D transistors Explores the application of FETs for biosensing in the healthcare field This book is aimed at researchers, professionals, and graduate students in electrical engineering, electronics and communication engineering, electron devices, nanoelectronics and nanotechnology, microelectronics, and solid-state circuits.

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Capacitance Meter: Capacitors are vital components in electronics, but sometimes they are broken, or the value printed on the cap has become unreadable. Because my multi-meter does not have a capacitance measurement, I decided to make one! The principle of measuring c…

How to Make an Inexpensive 16 MHz Arduino Oscilloscope Using Excel and Your Computer Screen to Display: Often an electronics hobbyist will design and build something only to find that it doesn't behave the way he or she intended. Sometimes in these situations the problem is related to an electrical signal, but that stuff moves at the speed of light! …

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Making an Electronic Quiz Board for Kids: In this Instructable, I'll show you how my cousin's son Mason and I made an electronic quiz board together! This is a great STEM-related project to do with kids of any age who are interested in science! Mason is only 7 years old but has increasingl…

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Here’s our Arduino based “Internet of Things” camera. It’s a simple remote monitoring using the Eye-Fi wireless SD card and Adafruit Data Logging Shield for Arduino. The Eye-Fi card is …

I obviously do a lot of Steampunk projects, but there are a ton of things out there that I haven't tried yet. So, in an effort to broaden my horizons, I recently taught myself how to use Arduinos, which I plan to incorporate into some of my future Steampunk builds.

This set includes 65 high-quality (300 dpi), transparent, PNG images. The following items come in color, grayscale, and lineart: - capacitor - resistor - LED (yellow, blue, green, red, purple) - spool of wire - knife switch (open and closed) - multimeter (with and w/o probes) - op amp - transistor - speaker (with and w/o wires) - DC motor (with and w/o wires) - 9V battery PLUS the following schematic symbols: - capacitor (polarized and non-polarized) - resistor (American and European version) - LED - lamp - switch (open and closed) - op amp - transistor (NPN and PNP) - speaker - DC motor - battery - ground For more electricity-related clipart, check out the other five sets in this series. You can also purchase all 6 sets together in the Electricity Combo Pack for a discounted price. Electricity Clip Art Combo Pack Light Bulb Clip Art Battery Clip Art Electrical Conductors & Insulators Clip Art Plug & Socket Clip Art Electronic Components & Symbols Clip Art Parallel & Series Circuit Clip Art All images are available for personal and commercial use, however, you may not resell or redistribute my artwork. Credit is appreciated (in the form of a link to www.digitalclassroomclipart.com) but not required. Created by Wendy Candler keywords: batteries, light emitting diode, schematics, electrical component clipart, integrated circuit chip, electricity clip art, digital multimeter, circuitry, electrical elements, voltage source, open circuit, closed circuit, kirchhoff's voltage law, ohm's law, electrical engineering, digital classroom clipart

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Welcome to the Arduino Workshop, where you'll be able to follow our guided course which covers everything you'll need to know in order to create your own Arduino projects and become a leveled up maker. My name is Sam and along with being a maker myself, I also enjoy teaching others how to use different technology and create amazing projects. Along with the course videos themselves, you can find all of the related course material such as code examples, circuit diagrams, images, and other resources. We'll be working with Arduino so you'll need an Arduino board to follow this course. We'll be introducing many different concepts including working with various types of hardware such as sensors, displays, and general electronics components, and the kit we're using for all of this is the Sparkfun Inventors Kit. If you are not in Australia, you can grab from Sparkfun directly and have it shipped to you almost anywhere in the world. Course Goals: Understand what an Arduino is and how it works Learn how to use an Arduino safely Program your Arduino using code that you've written in the Arduino IDE (Integrated Development Environment) Learn programming concepts using C and C++ along with Arduino specific programming Understand best practice concepts for programming and prototyping Use a wide variety of hardware and components and prototype your projects using a breadboard Build your own innovative project with Arduino When you're ready, let's begin the Arduino Workshop! If you run into any issues throughout this workshop, then please reach out to us on our forum. We're full-time makers and are here to help. Chapter 1: Introduction to Arduino 1.0 Chapter Overview In this chapter you'll learn about: What is Arduino Different types of Arduino boards How does the Arduino Uno board work and why it's so popular What is a microcontroller How to use the Arduino IDE (Integrated Development Environment) Powering and connecting your Arduino to your computer Uploading programs to your Arduino board By the end of this chapter, you will have uploaded your first program to your Arduino board to control an LED. 1.1 What is Arduino? In this section, we look at what is Arduino, what it's good for makers, and some of the different types of Arduino boards available. Section Resources: Example Arduino Uno Variations 1.2 What is a Microcontroller? In this section, we'll be looking at what is a microcontroller (the chip at the heart of any Arduino board), an overview of how they work, and how it integrates with the Arduino environment. 1.3 The Arduino Uno In this section, you'll learn about the features and capabilities of the Arduino Uno board, how the layout of the board can affect your project, and why the Uno is such a great all-rounder. 1.4 Arduino IDE and the Language In this section, we'll take a look at the Arduino IDE, which is where you write the code for your Arduino, upload it, and communicate with your board. We'll also cover the programming language that Arduino IDE uses, and where to download it. Section Resources: You can download the Arduino IDE from the Arduino website. 1.5 Powering and Connecting Your Arduino In this section, you'll be learning about the various ways to power your Arduino, and how to connect it up to your computer for uploading your programs, and communicating to the computer using the serial port. Section Resources: Arduino Power Layout 1.6 Hello World Example In the final section of this chapter, we'll talk through using the Arduino IDE to upload your first program to your Arduino board. Section Resources: Source code for 'Hello World' void setup() { pinMode(13, OUTPUT); //setup pin 13 as an output } void loop() { digitalWrite(13, HIGH); // turn the LED on (HIGH outputs 5V) delay(500); // wait for 500 milliseconds digitalWrite(13, LOW); // turn the LED off (LOW outputs 0V) delay(500); // wait for 500 milliseconds } Chapter 2: Using Inputs and Outputs 2.0 Chapter Overview In this chapter you'll learn about: How to properly structure your code Using variables to write more capable programs Building circuits using a breadboard Reading inputs and controlling outputs using the digital and analog pins Communicating via the serial port By the end of the chapter, you will have created an input interface for your Arduino, using the Serial Monitor to display the data. 2.1 Program Structure In this section, we'll be learning about how to properly structure code using indentations, nested levels, and semicolons. Section Resources: Example Program Structure 2.2 Using Variables In this section, we'll explore the use of variables, which will allow you to write more sophisticated code. Section Resources: Arduino Reference Datatypes: If you're interested in learning more about the various datatypes that Arduino supports, check out the reference page. 2.3 Building Your First Circuit Using a Breadboard In this section, we'll look at using different components such as LEDs, buttons, jumper wires, resistors, and a breadboard to construct a circuit. Section Resources: Further Reading If you'd like to know more about how electronic components work, check out the Analogue Electronics Crash Course and All About LEDs tutorials for more in-depth information. Wiring Diagram 2.4 Using Digital Pins In this section, we'll learn how to use the digital pins to read inputs and control outputs. Section Resources: Source code for 'LED Button' int buttonPin = 2; int ledPin = 3; void setup() { // setup pin modes pinMode(ledPin, OUTPUT); pinMode(buttonPin, INPUT_PULLUP); } void loop() { // read state of buttonPin and store it as the buttonState variable int buttonState = digitalRead(buttonPin); // write the value of buttonState to ledPin digitalWrite(ledPin, buttonState); } Wiring Diagram for 'Digital Pins' 2.5 Using Analogue Pins In this section, we'll learn how to use the analog pins to read inputs and control outputs. Section Resources: Source Code for 'Blink Rate Control' int ledPin = 3; int potPin = A0; void setup() { // setup pin modes pinMode(ledPin, OUTPUT); pinMode(potPin, INPUT); } void loop() { // read the value of the pot and store it as potValue int potValue = analogRead(potPin); // turn led on and wait for the time equal to potValue digitalWrite(ledPin, HIGH); delay(potValue); // re-read the value of the pot and store it as potValue potValue = analogRead(potPin); // turn led off and wait for the time equal to potValue digitalWrite(ledPin, LOW); delay(potValue); } Source Code for 'LED Brightness Control' int ledPin = 3; int potPin = A0; void setup() { // setup pin modes pinMode(ledPin, OUTPUT); pinMode(potPin, INPUT); } void loop() { // read the value of the pot, divide it by 4, and store it as potValue int potValue = analogRead(potPin) / 4; // turn led on with the value of potValue analogWrite(ledPin, potValue); } Wiring Diagram for 'Analogue Pins' 2.6 Displaying Information Using the Serial Port In this section, we'll be looking at using the serial port on the Arduino to communicate with a computer via USB. Section Resources: Source Code for 'Serial Monitoring' int ledPin = 3; int buttonPin = 2; int potPin = A0; void setup() { // setup pin modes pinMode(ledPin, OUTPUT); pinMode(buttonPin, INPUT_PULLUP); pinMode(potPin, INPUT); // initialise serial port with baud rate of 9600 Serial.begin(9600); } void loop() { // read the state of buttonPin and store it as buttonState (0 or 1) int buttonState = digitalRead(buttonPin); // read the value of the pot, divide it by 4, and store it as potValue int potValue = analogRead(potPin); int filteredPotValue = potValue / 4; // turn led on with the value of potValue analogWrite(ledPin,filteredPotValue); // print the value of the button Serial.print("Button: "); Serial.print(buttonState); Serial.print(" "); // print the value of the pot Serial.print("Pot: "); Serial.print(potValue); Serial.print(" "); // print the value of the pot / 4 with a line return at the end Serial.print("Pot/4: "); Serial.println(filteredPotValue); } Wiring Diagram for 'Serial Reading' Chapter 3: Decision Making and Using Logic 3.0 Chapter Overview In this chapter you'll learn about: Using 'If' statements Using 'while' loops Using 'for' loops Using 'Switch cases' Using maths in Arduino Creating functions Creating sophisticated code By the end of this chapter, you will have created your very own calculator using different functions, loops, and Serial functions. 3.1 'If' Statements In this section, we'll be looking at using 'If' statements, which are the backbone of decision-making for microcontrollers. Section Resources: Source Code for 'Toggle Switch' // pin definitions int ledPin = 3; int buttonPin = 2; // global variables int toggleState; int lastButtonState = 1; long unsigned int lastPress; int debounceTime = 20; void setup() { // setup pin modes pinMode(ledPin, OUTPUT); pinMode(buttonPin, INPUT_PULLUP); } void loop() { int buttonState = digitalRead(buttonPin); //read the state of buttonPin and store it as buttonState (0 or 1) if((millis() - lastPress) > debounceTime) //if the time between the last buttonChange is greater than the debounceTime { lastPress = millis(); //update lastPress if(buttonState == 0 && lastButtonState == 1) //if button is pressed and was released last change { toggleState =! toggleState; //toggle the LED state digitalWrite(ledPin, toggleState); lastButtonState = 0; //record the lastButtonState } if(buttonState == 1 && lastButtonState == 0) //if button is not pressed, and was pressed last change { lastButtonState = 1; //record the lastButtonState } } } Wiring Diagram for 'Digital Pins' 3.2 'While' Loops In this section, you'll learn about using 'while' loops and how to use them to change the structure of your code. Section Resources: Source Code for 'LED Flash Rate' // pin definitions int ledPin = 3; int buttonPin = 2; // global variables int toggleState; int buttonState =1; void setup() { // setup pin modes pinMode(ledPin, OUTPUT); pinMode(buttonPin, INPUT_PULLUP); } void loop() { buttonState = digitalRead(buttonPin); while(buttonState == 0) { toggleState =! toggleState; digitalWrite(ledPin, toggleState); delay(50); buttonState = digitalRead(buttonPin); } toggleState =! toggleState; digitalWrite(ledPin, toggleState); delay(200); } Wiring Diagram for 'LED Flash Rate' 3.3 'For' Loops In this section, you'll look at 'for' loops which you can use to control the flow of your program. Section Resources: Source Code for 'LED Pulse' // pin definitions int ledPin = 3; // global variables int rampTime = 2; void setup() { // setup pin modes pinMode(ledPin, OUTPUT); //initialise serial port Serial.begin(9600); } void loop() { // ramp LED brightness up to max for(int i = 0; i<256; i++) { analogWrite(ledPin, i); delay(rampTime); Serial.println(i); } // ramp LED brightness down to 0 for(int i = 255; i>0; i--) { analogWrite(ledPin, i); delay(rampTime); Serial.println(i); } } Wiring Diagram for 'LED Pulse' 3.4 Using 'Switch' Cases In this section, we'll dive into using 'switch' cases to implement comparative lists and outcomes. Section Resources: Source Code for 'Potentiometer Switch Case' // pin definitions int potPin = A0; // declare global variables int lastPotValue; void setup() { // set pin modes pinMode(potPin, INPUT); //initialise Serial port Serial.begin(9600); } void loop() { // read potPin and divide by 255 to give 5 possible readings int potValue = analogRead(potPin) / 255; // if something has changed since last value if(potValue != lastPotValue) { // enter switch case switch(potValue) { case 0: Serial.println("Very Low"); break; case 1: Serial.println("Low"); break; case 2: Serial.println("Moderate"); break; case 3: Serial.println("High"); break; case 4: Serial.println("Extreme"); break; default: Serial.println("error!"); break; } lastPotValue = potValue; } } Wiring Diagram for 'Potentiometer Switch Case' 3.5 Using Maths In this section, we'll look at how to use different mathematic functions and methods in Arduino. Section Resources: Example for 'Maths Functions' x = y + 3; x = y - 7; x = y * 6; x = y / 4; 3.6 Creating Functions In this section, we'll be learning about using and creating your own functions to write modular, reusable code. Section Resources: Source Code for 'Hypotenuse Calculator' *Update 8/1/18: I've updated the sketch for the hypotenuse calculater which is reflected in the code below. It provides rejection for non-integer values and some extra feedback. void setup() { //initialise Serial port Serial.begin(9600); } void loop() { int a; int b; float result; //print instructions, and wait until there is something in the serial buffer Serial.print("Enter a side value: "); while(!Serial.available()); a = readSerial(); if(a == 0) { return; } Serial.print("Enter the other side value: "); while(!Serial.available()); b = readSerial(); if(b == 0) { return; } findSide(a,b); Serial.println(); } //readSerial takes the next integer in the Serial buffer, clears the buffer, then returns it int readSerial() { int i = Serial.parseInt(); //checks if the received value is a valid integer if(i < 1 || (i%1 != 0)) { Serial.println("That isn't a valid integer"); return 0; } Serial.println(i); Serial.parseInt(); return i; } void findSide(int x, int y) { //calculate C squared by A squared + B squared float hypotenuse = sqrt(x*x + y*y); //print out the result Serial.print("Hypotenuse = "); Serial.println(hypotenuse); } Chapter 4: Data Manipulation and EEPROM 4.0 Chapter Overview In this chapter you'll learn about: Using variables within Arrays Using arithmetic, relational, logical, and assignment operators Manipulating data using bit-wise operators and logic Storing information between resets using EEPROM By the end of this chapter, you will have created an LED sequencing display using arrays, operators, and EEPROM storage. 4.1 Arrays In this section, we'll look at using arrays to store data, which allows for more powerful variable manipulation. Section Resources: Source Code for 'LED Sequencer' int ledArray[] = {2,3,4,5,6,7,8,9}; int delayTime = 50; void setup() { //initialise ledArray as outputs for(int i = 0; i<10; i++) { pinMode(ledArray[i], OUTPUT); } } void loop() { //turn LEDs on from 0-7 for(int i = 0; i <= 7; i++) { digitalWrite(ledArray[i], HIGH); delay(delayTime); } //turn LEDs off from 7-0 for(int i = 7; i >= 0; i--) { digitalWrite(ledArray[i], LOW); delay(delayTime*5); } } Wiring Diagram 4.2 Operators In this section, we're going to look at using arithmetic, relational, logical, and assignment operators. These are all used for comparing and evaluating data. Section Resources: Relation Operators Reference x = 4 y = 6 (x == y) false (x != y) true (x > y) false (x < y) true (x >= y) false (x <= y) true Logical Operators x = 0 y = 1 (x && y) false (x || y) true x = !x x now equals 1 (not 0) Assignment Operators i += 2 same as i = i+2 i -= 2 same as i = i-2 i *= 2 same as i = i*2 i /= 2 same as i = i/2 4.3 Bit Math In this section, you'll be learning about control individual bits within bytes using bit-wise operators and logic. Section Resources: Bitwise Operator Examples /*This section is a logic reference example. This is not valid code and won't compile on your Arduino //AND x = 0011 0100 y = 0101 1101 x & y = 0001 0100 //OR x = 0011 0100 y = 0101 1101 x | y = 0111 1101 //XOR x = 0011 0100 y = 0101 1101 x ^ y = 0110 1001 //NOT x = 0011 0100 ~x = 1100 1011 y = 0101 1101 ~y = 1010 0010 //SHIFT LEFT x = 0011 0100 x << 2 = 1101 0000 y = 0101 1101 y << 2 = 0111 0100 //SHIFT RIGHT x = 0011 0100 x >> 2 = 0000 1101 y = 0101 1101 y >> 2 = 0001 0111 */ Truth Tables Source Code for 'AND, OR, XOR Calculator' const int dataPin = 6; const int clockPin = 7; const int latchPin = 8; byte ledMap = 0b11111111; int delayTime = 3000; void setup() { // put your setup code here, to run once: pinMode(dataPin, OUTPUT); pinMode(clockPin, OUTPUT); pinMode(latchPin, OUTPUT); Serial.begin(9600); shiftWrite(0x00); Serial.println("Enter a number between 0-255"); } void loop() { if(Serial.available()) { int inputVal = Serial.parseInt(); if(inputVal > 255) { Serial.println("Uh oh, try again"); Serial.println("Enter a number between 0-255"); return; } Serial.print("DECIMAL: "); Serial.println(inputVal); Serial.print("BINARY: "); Serial.println(inputVal, BIN); Serial.println(); Serial.print("AND result: "); Serial.println(ledMap & inputVal, BIN); shiftWrite(ledMap & inputVal); delay(delayTime); Serial.print("OR result: "); Serial.println(ledMap | inputVal, BIN); shiftWrite(ledMap | inputVal); delay(delayTime); Serial.print("XOR result: "); Serial.println(ledMap ^ inputVal, BIN); shiftWrite(ledMap ^ inputVal); delay(delayTime); Serial.println(); Serial.println("Enter a number between 0-255"); } } void shiftWrite(byte value) { digitalWrite(latchPin, LOW); shiftOut(dataPin, clockPin, MSBFIRST, value); digitalWrite(latchPin, HIGH); } Wiring Diagram for 'AND, OR, XOR Calculator' 4.4 EEPROM In this section, we'll learn about storing data in the non-volatile memory known as EEPROM. This allows data to be retained when power is disconnected and accessed later. Section Resources: Source Code for 'EEPROM Counter' #include // pin definitions int ledPin = 13; int buttonPin = 2; // global variables int lastButtonState = 1; long unsigned int lastPress; int debounceTime = 20; int counter; void setup() { // setup pin modes pinMode(ledPin, OUTPUT); pinMode(buttonPin, INPUT_PULLUP); //initialise Serial port Serial.begin(9600); //assign counter the value of address 0 counter = EEPROM.read(0); //write a 0 to address 0. This allows for consecutive resets to reset the counter EEPROM.write(0,0); } void loop() { int buttonState = digitalRead(buttonPin); //read the state of buttonPin and store it as buttonState (0 or 1) if((millis() - lastPress) > debounceTime) //if the time between the last buttonChange is greater than the debounceTime { lastPress = millis(); //update lastPress if(buttonState == 0 && lastButtonState == 1) //if button is pressed and was released last change { counter++; EEPROM.write(0, counter); //write counter to address 0 digitalWrite(ledPin, HIGH); //momentary LED lastButtonState = 0; //record the lastButtonState //print the results Serial.print("Counter: "); Serial.println(counter); } if(buttonState == 1 && lastButtonState == 0) //if button is not pressed, and was pressed last change { lastButtonState = 1; //record the lastButtonState digitalWrite(ledPin, LOW); //momentary LED } } } Wiring Diagram for 'EEPROM Counter' Chapter 5: Libraries, Serial Data, and Hardware 5.0 Chapter Overview In this chapter you'll learn about: Using and including libraries in your projects Using the SPI interface to send/receive serial data Using the I2C interface to send/receive serial data Expanding your project with the Arduino hardware format called 'Shields' 5.1 Using and Including Libraries In this section, we'll be looking at using code modules called 'libraries' which can be used to simplify complex applications. Section Resources: Arduino Library Reference Page Here, you can find Arduino's information page regarding libraries which cover some of the changes for including and adding libraries with different revisions of the Arduino IDE. 5.2 Using SPI In this section, you'll learn how to use the SPI interface to send and receive serial data for interfacing with sensors and other devices. Section Resources: Arduino SPI Port Source Code for 'SPI LED Shift Register' #include int slaveSelect = 2; int delayTime = 50; void setup() { pinMode(slaveSelect, OUTPUT); SPI.begin(); SPI.setBitOrder(LSBFIRST); } void loop() { for (int i; i < 256; i++) //For loop to set data = 0 then increase it by one for every iteration of the loop, when the counter reaches the condition (256) it will be reset { digitalWrite(slaveSelect, LOW); //Write our Slave select low to enable the SHift register to begin listening for data SPI.transfer(i); //Transfer the 8-bit value of data to shift register, remembering that the least significant bit goes first digitalWrite(slaveSelect, HIGH); //Once the transfer is complete, set the latch back to high to stop the shift register listening for data delay(delayTime); //Delay } } Wiring Diagram for 'SPI LED Shift Register' 5.3 Using I2C In this section, you'll look at using the I2C interface to send and receive serial data for interfacing with sensors and other devices. Section Resources: I2C Packet Structure Arduino I2C Port Source Code for 'Master Reader Arduino Demo (from Arduino)' #include void setup() { Wire.begin(); // join i2c bus (address optional for master) Serial.begin(9600); // start serial for output } void loop() { Wire.requestFrom(8, 6); // request 6 bytes from slave device #8 while (Wire.available()) { // slave may send less than requested char c = Wire.read(); // receive a byte as character Serial.println(c); // print the character } delay(500); } Source Code for 'Slave Sender Arduino Demo (from Arduino)' #include void setup() { Wire.begin(8); // join i2c bus with address #8 Wire.onRequest(requestEvent); // register event } void loop() { delay(100); } // function that executes whenever data is requested by master // this function is registered as an event, see setup() void requestEvent() { Wire.write("hello "); // respond with message of 6 bytes // as expected by master } Adafruit RTC Library You can download Adafruit's RTC library which is specifically designed for the DS3231 chip that we'll be using, here. Wiring Diagram for 'I2C-I2C Arduino Demo' Source Code for 'RTC Module (from Adafruit)' // Date and time functions using a DS3231 RTC connected via I2C and Wire lib #include #include "RTClib.h" RTC_DS3231 rtc; char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}; void setup () { #ifndef ESP8266 while (!Serial); // for Leonardo/Micro/Zero #endif Serial.begin(9600); delay(3000); // wait for console opening if (! rtc.begin()) { Serial.println("Couldn't find RTC"); while (1); } if (rtc.lostPower()) { Serial.println("RTC lost power, lets set the time!"); // following line sets the RTC to the date & time this sketch was compiled rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); // This line sets the RTC with an explicit date & time, for example to set // January 21, 2014 at 3am you would call: // rtc.adjust(DateTime(2014, 1, 21, 3, 0, 0)); } } void loop () { DateTime now = rtc.now(); Serial.print(now.year(), DEC); Serial.print('/'); Serial.print(now.month(), DEC); Serial.print('/'); Serial.print(now.day(), DEC); Serial.print(" ("); Serial.print(daysOfTheWeek[now.dayOfTheWeek()]); Serial.print(") "); Serial.print(now.hour(), DEC); Serial.print(':'); Serial.print(now.minute(), DEC); Serial.print(':'); Serial.print(now.second(), DEC); Serial.println(); Serial.print(" since midnight 1/1/1970 = "); Serial.print(now.unixtime()); Serial.print("s = "); Serial.print(now.unixtime() / 86400L); Serial.println("d"); // calculate a date which is 7 days and 30 seconds into the future DateTime future (now + TimeSpan(7,12,30,6)); Serial.print(" now + 7d + 30s: "); Serial.print(future.year(), DEC); Serial.print('/'); Serial.print(future.month(), DEC); Serial.print('/'); Serial.print(future.day(), DEC); Serial.print(' '); Serial.print(future.hour(), DEC); Serial.print(':'); Serial.print(future.minute(), DEC); Serial.print(':'); Serial.print(future.second(), DEC); Serial.println(); Serial.println(); delay(3000); } Wiring Diagram for 'RTC Module' 5.4 Interrupts In this section, we'll look at how to use interrupts. You may have heard of them before, and they're a great way to increase your program's efficiency when dealing with hardware inputs. Section Resources: Source Code for 'Interrupt Debouncing' // pin definitions int ledPin = 3; int buttonPin = 2; // global variables int toggleState; int lastButtonState = 1; long unsigned int lastPress; volatile int buttonFlag; int debounceTime = 20; void setup() { // setup pin modes pinMode(ledPin, OUTPUT); pinMode(buttonPin, INPUT_PULLUP); attachInterrupt(digitalPinToInterrupt(2), ISR_button, CHANGE); } void loop() { if((millis() - lastPress) > debounceTime && buttonFlag) { lastPress = millis(); //update lastPress if(digitalRead(buttonPin) == 0 && lastButtonState == 1) //if button is pressed and was released last change { toggleState =! toggleState; //toggle the LED state digitalWrite(ledPin, toggleState); lastButtonState = 0; //record the lastButtonState } else if(digitalRead(buttonPin) == 1 && lastButtonState == 0) //if button is not pressed, and was pressed last change { lastButtonState = 1; //record the lastButtonState } buttonFlag = 0; } } void ISR_button() { buttonFlag = 1; } Wiring Diagram for 'Interrupt Debouncing' 5.5 Arduino Shields In this section, we'll be taking a look at using hardware add-on modules known as 'shields'. They're a great way to easily expand your project's capabilities. Chapter 6: Where to From Here? 6.0 Further Resources It's time to wrap up the Arduino Workshop, so I'm going to recommend a couple of my favourite resources for projects and questions. Arduino Reference Core Electronics Tutorials Hackster.io Forum 6.1 Recommended Arduino Compatible Boards Arduino Due Teensy Circuit Playground Particle Thanks for going on this journey with us, and be sure to share this workshop with a friend if you found it useful!

Chris Barnes' conceptual Google device caters to the niche audience that needs connectivity the most, but struggle to keep up with technology or to avoid the co

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PRICES MAY VARY. 【Bluetooth Dongle】 No cable needed, USB interface, plug-in directly to connect Makeblock programming device, with high transmission efficiency and low latency data transmission, ensure a stable signal when using coding devices. 【Entry-level Coding Robot Toy】 Designed for learning electronics, robotics and computer programming in a simple and fun way, mBot robot kit is an excellent educational robot toys. From scratch to Arduino, this STEM projects for kids ages 8-12 helps kids to learn programming step by step via interactive software and learning resources. 【Easy to Build 】With clearly building instructions, this building kit can be easily built within 15 minutes with just a screw. Kids will learn more about electronics, machinery, and robotics components through building mBot. You can also play this STEM projects for kids ages 8-12 as a remote control car with its multi-functions: line-follow, obstacle-avoidance and so on. 【Rich Tutorials for Programming】 We offer multiple coding lessons in the package from L1-L3, with these coding cards, children can easily use all fonctions of mBot and creat projects by themselves. Matched with 3 free Makeblock apps, and mBlock software, kids can enjoy remote control, play programming games, and program with mBot robot kit. Note that the remote control needs a CR2025 battery(NOT INCLUDED), and the robot kit needs 4 AA batteries (NOT INCLUDED) 【Awesome Gift for Kids】 Surprise your little Kids with super cool robotics kit and let them discover the secrets of programming & electronics. Being well packaged, this robot kit is a perfect learning & educational toy gift for boys and girls on Birthday| Children's Day| Christmas| Chanukah| Easter| Summer Camp Activities| Back To School| Home Fun Time. robot kit stem toy stem projects kids 8 12 learning education remote control car boys building robotics robot kit teenager programming electronics christmas gifts for kids programmble robot kids robot toy rc cars coding robot stocking stuffers mystery boxes

Porta Memory for any SmartPhone and Tablet.  The Porta Memory Stick has a built-in sliding connector for a Lightning 8pin Apple adapter & micro USB adapter and USB 2.0 standard adapter to fit in Desktops.

Here is our collection of 25 of the most awesome and cool inventions we have come across . Most of these cool innovations are related to the day to day technology we use in our lives everyday .

Generally a transformer is an electrical device or machine which inductively transfers the electrical power operating at a particular current and voltage of one circuit to the other circuit which is operating at different current and voltage level. Most of the transformers are manufactured such that their characteristics must match for special application requirements such […]

S9994G Nano SIM Card 2.88inch Big Screen Android Smart Watch Mobile Phone Man Woman 4GB+64GB 13MP Camera GPS 480*640P Smartwatch Related Products HW22/T500+       W36 W26+     FK78/88     DT36/AK76      OEM ODM Service      credit     Shiping Tracking      transaction history     feedback   coupon      Spes: Hardware Configuration CPU MTK6761 Display screen 2.88 "TFT touch screen Rectangular full touch Resolution 480*640 RAM/ROM 4G+64G SIM card Nano SIM The internet 2G/3G/4G system Android 9.0 Frequency band GSM: 850 / 900 / 1800 / 1900 WCDMA: B1/B2/B5/B8 TD-SCDMA: B34/B39 LTE-FDD:B1/B2/B3/B5/B7/B8/B12/B17/B20 LTE-TDD:B38/B39/B40/B41(100MHz) camera Five million cameras, 13 million cameras Ble 5.0 Heart rate sensor Tianyi Hexin hrs3300 battery 2300mAh wifi Support 2.4g/5g GPS GPS+Go Ble effective distance >10m (open environment) Battery life 3 days charging method Magnetic charge Charging time 3 hours Material technology Watch case aluminium alloy button aluminium alloy Strap material silica gel Head size 77.2*53.6*15mm Strap size 32mm width, total length 288mm, adjustment range 190-270mm     Function introduction  Features It supports the manual selection of language on the watch, answering and making calls, phonebook, sending SMS, downloading third-party app, video call, photo taking, alarm clock, calendar, calculator, recording, local music playing, weather, voice search, step counting, heart rate, multi exercise mode, looking for mobile phone, stopwatch, music control, holding up the hand to light the screen, changing the dial, pushing messages, etc  system Android: support the original operating system version 6.0 and above, (settings - about the device, check the Android version) IOS: support system version 11.0 and above. You can check the version of this phone by setting general on your phone. If it is lower than 11.0, please upgrade it first language Chinese version Foreign versions of Chinese, English, German, Spain, French, Indonesia, Italy, Netherlands, Norway, Poland, Portugal, Vietnam, Turkey, Greek, Russian, Ukrainian, Hebrew, Persian, Arabic, Thai, Korean, Mangala, Hindi (this is a more accurate translation language) the other 100 languages are not translated Very accurate display 1)Date, week, clock and minute (real time display); 2) Time system: 12 / 24-hour dual system; 3) After the mobile phone app connection, the watch automatically reads the mobile phone time, date, format and synchronizes. Walking movement monitoring 1) Accurate monitoring of walking (steps), physical expenditure (calories), walking distance (km);   Information reminder After connecting with the mobile app , the watch will timely remind you of phone calls, SMS, QQ, wechat, twittre, Facebook, WhatsApp, Skype and other information. Ble off shortcut key The user can turn off or start the push function of the mobile phone according to the actual function, so as to appropriately reduce the power consumption of the watch and turn on (or off) information push reminder.   Related Products   DT95/66        H30       F35/T30    S20/KM05      OEM ODM Service      credit     Shiping Tracking      transaction history     feedback   coupon      OEM ODM Service      credit     Shiping Tracking      transaction history     feedback   coupon

Human Friendly Robotics. Picture Of The Book: Human Friendly Robotics About The Book: The International Workshop on Human-Fr...

Item specificsConditionNew: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging ... Read moreabout the conditionNew: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging is applicable). If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. See the seller's listing for full details. See all condition definitionsopens in a new window or tab BrandNoneTypepower board outlets socketMPN23123532J1SE5UIBCountry/Region of ManufactureChinaManufacturer Warranty30 daysColourGreyMaterialABS, PC, CopperEANdoes not apply

Most of the previous tutorials here have been Arduino related, but there are much more than just Arduino when it comes to making things. Connecting projects on a breadboard is a simple and fast way to prototype but when you want to keep your project for a long time or present it on some kind of contest or ... Read more