This project is a Light gradient sensitive Robot with Solar charging capabilities, in other words it seeks out the light to charge itself. It accomplishes this behavior with a set of Four Light sensitive Photo Resistors in voltage divider circuits. The Arduino unit reads the four values which correspond to the intensity of the light received by the sensors through its analog read pins. It then applies a high voltage across a reed switch which completes a circuit between a 9v battery, and two Toy Motors, resulting in turning or moving towards the light.These motors were not able to be activated directly with the Arduino, if you get small enough motors, the switching portion of this project may be omitted without loss of functionality. If any of the four Photodiodes is registering much higher than the others, it detects which Photodiode is receiving the heightened signal and turns or moves in that direction for as long as the heightened signal is being received.  

Want to know why your monthly Electricity bills are “so high”? Take a closer look at the Lights or Fans, when a person inside the room leaves the room hastily, He or She unknowingly leaves the Lights switched on.So, what next? The only way for this is Intelligent Automated Home Lighting System. In this system when a person enters the room the tube lights are switched on automatically. The light switches go off automatically when there is no body inside the room. The whole Intelligent Automated Home Lighting System is now at the tip of your motion. As one moves inside the room the bulb switches on and as one leaves the room it switches off.  

Like Line following robots are fun, making a wall following robot is even more exciting. A wall following robot is designed to move along a wall without hitting it. It has obstacle detection sensors mounted on the body which detects wall and drive DC motors attached to the wheels such that the robot keeps moving along the wall.The robot can be designed right oriented or left oriented or even can be designed to follow either sides. A right or left oriented wall follower can be designed easily with the help of just two sensors. Though more sensors can be used in making such a robot which will ultimately improve the path accuracy of the robot.

Sometimes Electronics hobbyist gets ideas to build robots from animals in nature. There are robot dogs, robot snakes, robot birds, and even robotic insects! In this project, you will build a robot of your own which will automatically drive chases a light source, mimicking a behavior called photo-taxis, seen in some insects and flowers. This is a robot that chases light, for this to work, the robot needs at least two lights detecting sensors, out in front and spaced apart from each other. 

This article is to make a gesture controlled robot or car. It will help you in building an gesture based android controlled robot without any experience in android app development by providing you the free android app. This app consists of touch and voice controlling interface of your robot. It is simple to start with downloading the app to your phone/tablet and start building your robot by following steps.

This Project aims in the building of one application of robots in the automation of Collecting environmental aspects. The robot supports remote performance monitoring and maintenance of various factors of the environment in any given area. The details of the design, setup and the use of the robot in Data Acquisition (DAQ) system are given here. The sensors provide accurate and reliable real time data needed for autonomous monitoring and control of any type of area or industry. Data Acquired by the proposed system can be remotely accessed, plotted and analyzed. This provides a fully automated solution for the monitoring and control of remote locations.

ESP-NOW is a connectionless communication protocol developed by Espressif for wireless data communication between ESP boards. It allows ESP boards like ESP8266, ESP32, ESP32-C, and ESP32-S to communicate directly without a router or Internet connectivity. This enables a private wireless network among ESP devices, eliminating the need for a router, gateway, or Internet access for…

A dc servo motor provides precise motion control, enabling accurate positioning and speed regulation in various applications. It consists of a rotary or linear actuator, which allows for such precise control of angular or linear position, velocity, and acceleration. It’s used in several sectors, including: Robotics Industrial automation Angular load positioning Avionics Automobiles A few…

Arduino IoT Cloud, also known as simply Arduino Cloud is a popular Internet-of-Things (IoT) platform for creating, deploying, and managing IoT projects. The platform was launched in 2019 as a Beta version similar to other platforms, such as Blynk. Since then, Arduino Cloud has undergone several upgrades, adding unique features. It’s best known for its…

Heltec Lora-32 is a high-quality Wi-Fi LoRa (long-range) development board that competes with the Lilygo TTGO T-LoRa32, RAKwireless WisNode LoRaWAN RAK811, and STMicroelectronics Nucleo boards. What differentiates Heltec LoRa-32 is that it’s more than a LoRa-only device, offering Bluetooth and Wi-Fi capabilities. This allows Heltec to easily integrate into existing network infrastructure in an Internet-of-Things…

Power consumption of the embedded controller is a primary concern in low power design. Arduino boards are often used in devices that rely on battery or solar charging. Such devices often deploy far from the power line to have periodic battery replacement or are mobile devices designed for periodic charging cycles. In such a case,…

In this project, we’ll design an omnidirectional, moving pick-and-place robot. First, let’s cover how the robot is built. The robot’s build As shown in Figure 1, the robot consists of two sections: An omnidirectional moving platform A robotic arm The omnidirectional platform The robot is built using one circular wooden plate, three dc gear motors,…

Color detection is the process of identifying and distinguishing colors within an image, video, scene, or object. Many embedded and robotic applications require this feature, as it’s useful for sorting, selection, test strip reading, path determination, and more.  Two standard sensors used for color detection include TCS230 or TCS3200. TCS3200 recognizes various colors based on…

Contactless body temperature measurement using MLX90614 sensor In the previous two articles of this tutorial series, I demonstrated how to display analog sensor data (like POT, LM35, soil moisture sensor, etc.) or smart digital sensor (DHT11) data on TFT LCD. In this third article, I will explain how to display body temperature on TFT LCD. It…

This is a simple project on arduino, ldr(light dependent resistor)/photoresistor sensor and piezo buzzer. Piezo buzzer output sound level will variate by arduino depending on the intensity of light thrown on ldr/light sensor. An led will also fade by arduino depending on the intensity of light thrown on photoresistor. The diy project is same like…

Biometric devices are the backbone of modern security and access systems. The most commonly used biometric device is a fingerprint scanner. Fingerprints are unique identifiers that cannot be easily faked. Optical fingerprint sensors are widely used in security systems as these are low-cost compared to capacitive and ultrasonic scanners. Optical fingerprint sensors digitize fingerprints by…

Displaying potentiometer value and temperature using LM35 In my previous tutorial series on displaying sensor data (value) on OLED display, I have explained how to display values of different sensors like a potentiometer, LM35, soil moisture sensor, DHT, HC SR04, etc. on a tiny 1” OLED display. This time, I will demonstrate and explain how…

Including an audio option with an electronic or Internet-of-Things (IoT) project is often an ideal addition. However, microcontrollers cannot process MP3 files, which is the most common audio file format. Fortunately, there is a solution. It is possible to play MP3 audio files on Arduino using dedicated MP3 decoders like the DFPlayer Mini or MP3-TF-16P.…

Weighing scales are frequently used to measure the weight of goods, such as bulk items and raw materials. We sometimes use them at grocery stores to weigh produce or at home to measure our weight. Building a weighing scale is no simple task. It involves a combination of load cells, amplifier circuits, and microcontrollers or…

Today, mobile-based authentication to verify a person’s identity is common. Online service providers often use it for access to services, approval of transactions, or to change a user’s credentials.  Imagine using a similar mobile-based authentication to enter your home, office, or any private space. It’s possible. In this project, we’ll design a mobile-based access system…