Category Archives: Arduino

Story Our skin is amazing! It provides a medium for us to experience the sense of touch. It keeps infections out and keeps innards in but I bet you didn’t know that our skin changes conductivity depending on many different things one being our mood! It is called Electrodermal activity (EDA) and there’s a really interesting Wikipedia page you can read here. The basics are that our skin changes its conductivity depending on how we feel. So tody we are going to make a Lie Detector using Arduino. This lie Detector will detect if the person on whom we are testing this is telling a lie or not. We start by connect our Arduino to the subject. Then connect the Arduino to a computer with the graphing software (I’ll go over this in detail later). Lets start by asking the subject some easy questions. We know they will answer truthfully…

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Introduction I am Maqueen Hello, my name is Maqueen, is a graphical programming robot for STEM education, which inherits playability and simple operation of micro:bit. The Mini-body, interesting features and plug-and-play allow children to quickly learn graphic programming in entertaining, nurturing children’s interest in science and logical thinking. What are the features of Maqueen? Support for Makecode, will support Scratch and python later. Small size, flexible movement. All-metal miniature gear motor, good quality, strong driving force. Line patrol, ambient light, LED lights, ultrasonic interface, buzzer, I2C interface, mechanical expansion screw hole, etc. … full-featured, highly expandable. Exclusive customized POM bearing wheel, flexible and reliable, strong obstacle crossing ability. Easy to install, easy to use. Function Diagram Specification Supply Voltage: 3.5V~5V DC ( Three AAA batteries or 3.7V lithium battery ) Infrared Grayscale Sensor(High-low level) x 2 Buzzer x 1 Infrared Receiver (NEC decoder) x 1 LED Lights (High-low level control)…

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Things used in this project Hardware components NodeMCU ESP8266 Breakout Board × 1 Software apps and online services Arduino IDE Hand tools and fabrication machines Soldering iron (generic) Story In this project tutorial we will learn how to control robot car by using android device via WiFi over the Internet. We will use the NodeMCU ESP8266-12E for this project and L298N motor Driver Board. Required: 1. ESP8266 ESP-12 (NodeMcu) – https://amzn.to/2SvpcCt 2. Dual H Bridge DC Motor Drive Controller Board Module – L298N D2 – https://amzn.to/2X9eX5M 3. 12v Battery (I m using 11.1v 2200mah lipo Battery) – https://amzn.to/2X0kHyI 4. 2 Geared DC Motor – https://amzn.to/2SvkmFn 5. Frame for Holding 2 DC Motors. – https://amzn.to/2E8nPkr 6. Any Android Mobile. Add NodeMCU library – click here – http://www.robocircuits.com/how-to-install-esp8266-library-in-arduino/ Like us at https://fb.com/robocircuits Follow us at https://instagram.com/robocircuits Follow us at https://twitter.com/robocircuits Visit us at http://robocircuits.com

Things used in this project Hardware components Arduino Nano R3 × 1 Ultrasonic Sensor – HC-SR04 (Generic) × 1 Software apps and online services Arduino IDE Hand tools and fabrication machines Soldering iron (generic) Story “Collision Avoidance System for Drones”, as the name suggests, protects the drone from collision from any obstacle such as a wall.In day to day life we hear drone crashes which not even cause machine loss as well as a great threat to peoples around. As drones are becoming common these days so it increases the threat of drone failures. So I designed this collision avoidance system to protect people as well as machine loss. The idea behind the project is too simple. Whenever any obstacle is detected from left side the drone must drift towards right and same in all four directions. By keeping everything really simple I just manipulated the receiver’s signals which are…

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To program NodeMCU in Arduino IDE, we have to install esp8266 board (ESP8266 core for Arduino) to Arduino IDE. Add Additional Board Manager URL for ESP8266 board:> File > Preference Add “http://arduino.esp8266.com/stable/package_esp8266com_index.json” in Additional Board Manager URLs. Add ESP8266 board to Arduino IDE:– Open Boards Manager in Arduino IDE– Search “esp8266” or “NodeMCU”, you will find “esp8266 by ESP8266 Community”. Install it. That’s it

ABOUT THIS PROJECT In this Arduino Game Project we are going to build an Arduino Game, the clasic Pong game! It is a very easy Arduino Project to build, it won’t take you more than 15 minutes! And we can charge it using a solar panel which is stick on its back side. It uses a small battery which give a play time of 4 hours. In this video we are going to build an Arduino powered Game. It is the classic Pong Game! You can play it against the computer controlling the green paddle. Each time a player scores, the score is displayed on the screen. The first player to reach 8 points wins! It is a fun project to build and as you are going to find out, it won’t take you more than 10 minutes to build it. Let’s start! The parts needed in order to build…

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DIY Cheap & Portable Power Supply Version 1.0 There are a lots of power supplies in market but those are too expensive for a Arduino Beginner or a Hobbyist. So I decided to make a Good Looking and Cheap power supply out of cheap modules. the power Supply must be handy as well as Powerful. So I started with making a voltmeter using 7107 IC (4- 7 Segment display Compatible). I created a circuit Diagram using EasEDA.com and created a Schematics and Then created a PCB design for the same and ordered my PCBs from jlcpcb.com because they provide best quality PCBs in the market. All the Schematics and PCB Design can be downloaded from www.robocircuits.com link to files – http://www.robocircuits.com/digital-voltmeter-without-arduino/ Then for making the Power Supply I printed a 3D Enclosure for the PS and get it printed by a local 3D printer. Then I grab some components 1. Voltmeter – http://www.robocircuits.com/digital-voltmeter-without-arduino/ 2. Buck Conveter – https://amzn.to/2RfWbcG…

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9+COMPONENTS AND SUPPLIES Arduino Nano R3 × 1 Real Time Clock (RTC) × 1 Linear Regulator (7805) × 1 SparkFun LilyPad Rainbow LED (strip of 7 colors) × 1 NECESSARY TOOLS AND MACHINES Soldering iron (generic) APPS AND ONLINE SERVICES Arduino IDE ABOUT THIS PROJECT Ambient Lightning Real-Time Clock Aim I made this Clock because I have a addressable LED strip laying around and I want to use it. Then I saw my room doesn’t have a good Clock that matches its walls. So I Decided to make a Clock which can change its colors according to users mood or wall color. Making Process YouTube Video – https://youtu.be/BOfylZIl_ws I firstly took a 24 x 15 inch plywood board. Cut LED strip into pieces and paste them on the board Then After soldering them I cover the whole with a black chart paper Then paste a thermocoal sheet on top of it…

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How to drive the Arduino color OLED The display is very small. It has almost the same size as the monochrome OLED display. But the resolution of it is not the same. It has a resolution of 96×64 pixels. So, it has a lower resolution at the same size. It can display 65 thousand colors! The display I bought, uses the SPI interface so we have to connect 7 pins in order to make it work. The monochrome ones that I have bought, use the I2C interface which requires only 4 pins. So, we need more wires in order to connect it with Arduino. Let’s how to achieve that. I am going to connect the color OLED display to an Arduino Uno. GND pin goes to Arduino GND. Vcc pin goes to either 3.3V or 5V output of the Arduino Uno. I connect it to the 3.3V output of the Arduino Uno.…

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Dot Matrix 8×8 Make a cheap and good looking LED matrix Things used in this project Hardware components Arduino Nano R3 × 1 LED (generic) × 1 OSH Park Custom fabricated PCB × 1 Software apps and online services Arduino IDE Hand tools and fabrication machines Soldering iron (generic) Story Theory of LED dot matrix display In a dot matrix display, multiple LEDs are wired together in rows and columns. This is done to minimize the number of pins required to drive them. For example, a 8×8 matrix of LEDs (shown below) would need 64 I/O pins, one for each LED pixel. By wiring all the anodes together in rows (R1 through R8), and cathodes in columns (C1 through C8), the required number of I/O pins is reduced to 16. Each LED is addressed by its row and column number. In the figure below, if R4 is pulled high and…

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