Category Archives: Projects

Overview ESP-MESH is a networking protocol built atop the Wi-Fi protocol. ESP-MESH allows numerous devices (henceforth referred to as nodes) spread over a large physical area (both indoors and outdoors) to be interconnected under a single WLAN (Wireless Local-Area Network). ESP-MESH is self-organizing and self-healing meaning the network can be built and maintained autonomously. Traditional Wi-Fi Network Architecture A traditional infrastructure Wi-Fi network is a point-to-multipoint network where a single central node known as the access point (AP) is directly connected to all other nodes known as stations. The AP is responsible for arbitrating and forwarding transmissions between the stations. Some APs also relay transmissions to/from an external IP network via a router. Traditional infrastructure Wi-Fi networks suffer the disadvantage of limited coverage area due to the requirement that every station must be in range to directly connect with the AP. Furthermore, traditional Wi-Fi networks are susceptible to overloading as…

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Electronic Dice Electronic Dice is a playful electronic project with integrated electronic components involvement. The dice works extremely well in all favorable conditions a user needs when he/she plays a game. Using beautiful schematic and colorful LEDs’ dice reflects enjoyment when biasing. So, let’s begin towards the development. Principle of Electronic Device: An integrated circuit(IC) 4017 is connected in the circuit, whenever the user touches the naked wire leaves a side of the circuit. The signal reaches the IC which is connected to the 6 variant LED’s the power is given simultaneously to LEDs and when the user removes his/her hand away from the naked wire. The signals stop at a certain LED and it indicates the number obtained from that LED with it’s naming. What are you waiting for let’s make it. Components Required: 1. Integrated circuit (IC) 4017 (1) get it from here 2. 6 LED’s (same or different…

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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) Solder Wire, Lead Free Story The Smart Board The Smart Board is based on internet of things. IoT The internet of things, or IoT, is a system of interrelated computing devices, mechanical and digital machines, objects, animals or people that are provided with unique identifiers (UIDs) and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction. The IoT Board Firstly you will have to make a IoT board. Detailed Instructions are given in this video. The Smart Board The Smart Board can be made easily by watching this video. All Instructions are given in video. How to install ESP8266 in IDE – http://www.robocircuits.com/how-to-install-esp8266-library-in-arduino/ Custom parts and enclosures Gerber Files Schematics Code Blynk C/C++ /************************************************************* Download latest Blynk library here:…

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Whenever it comes to any Arduino related project. Everyone needs a power supply to juice up their projects. Some people like me uses ordinary mobile chargers and some likes to use a 9v battery and few go with a LiPo battery. But I have a better way!!! Why don’t we just make our own power supply?? Even its cheaper than a traditional mobile charger yet with more flexibility. Today we are going to make a really small and cheap Linear Power Supply which will give output of 5v but by replacing only few components we can get 12 or 9v easily. Components Needed Four diodes Two capacitors One transformer One led One resistance One 7805 ic (If we just change the transformer and the 7805 IC to 7812, we can get an output of 12v.) Circuit Designing Let’s learn how to make a linear power supply step by step. First…

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Story This Robotic Arm is made without Arduino. It works on a 2.4gh Transmitter which is commonly used in drones therefore I am using a FlySky FS-ia6 worth 5500 inr. I also used a 3mm Acrylic Sheet to make its arms. Servo Motors used are Tower Pro Mini Servos and they works on 5v and also the reciever works on 5V thats why i used a 5V 2A Power supply which can be provided using a Mobile Charger. This Project is good for School and Colleges Projects, Science Exhibitions and for hobby too. You will need – 1. 4x Servo Motors 2. Acrylic Sheet 3. Drone Transmitter Tools Needed – 1. Screw Driver 2. Acrylic Cutter 3. Double Sided Tape 4. Cutter Servo Motor A servo motor is a closed-loop system that uses position feedback to control its motion and final position. In industrial type servo motors the position feedback…

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Lets start making Our Servo Motor Tester Hi This Article is about Servo Motors and How to Make a Servo Motor Tester. Before Start Reading. Kindly take a Minute and Subscribe me on YouTube – Click here -> RoboCircuits I needed a servo tester for my workshop, to have at hand whenever I change servo horns or need to see if a servo is dead. I decided to use a 555 timer to do this. 555 IC will create PWM signals for our Servo Motor Tester. Driving a Servo Motor This is covered everywhere on the internet, so I’ll be brief. A typical RC servo is controlled by a 50Hz square pulse signal called Pulse Width Modulation (PWM). The high pulse time varies from 1ms to 2ms, where 1ms gives 0 degrees and 2ms gives 90 degrees. This is followed by a low time of 16-18ms. The servo has a…

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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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