500+ Arduino Projects with Code - Circuit Diagrams & Tutorials

Browse CircuitDigest’s curated collection of Arduino projects for beginners and advanced makers. Discover practical Arduino project ideas with source code, circuit diagrams, and clear step-by-step explanations. This library of 500+ Arduino-based projects helps you quickly find the right Arduino application for electronics, automation, IoT, robotics, and embedded systems.

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AI has been a buzzword this entire decade. People have been applying the concepts of AI in all possible fields – Agriculture, Medical Imaging, Autonomous Driving, Biometrics, encryption, Data Analysis, FinTech, and what not. However, because it is a rapidly emerging field there is a lot of changing and upcoming technologies. Frameworks get old within months and libraries…

E-paper, often known as electronic paper, is a type of technology that imitates the look of ink on paper. Electronic paper displays differ from LCD panels in a way that they reflect rather than emitting light, similar to paper. In this tutorial, we will see the brief introduction and working of E-Paper display and we will interface this small E-paper display with Arduino UNO…

Hello! everyone, this tutorial will be extremely exciting for electronics makers because we will be designing our own touch-capacitive Piano with Arduino Nano. We will include a recording and replay feature on our Piano. So far, we've made a few piano projects using Arduino, but this one is quite different because we are going to use capacitive touch keys for our piano…

Forest fires are common hazards in forests that cause a lot of harm to Wildlife as well as the Environment. It could be avoided if a robust system could be deployed in forest areas to detect the fire and alert to Fire extinguishing authority to take immediate action. In this project, the intention is to build a Forest fire detection system using IoT which would detect the…

If you are the one interested in working on some kind of smart home project but don’t know where to start and which smart home platform to use, this article might be of help. Previously, we have covered many smart home projects with different platforms and in this article, we are going to discuss about what Tasmota is, how does it work and…

Distance measurement of an object in the path of the person, equipment, or a vehicle or moving object is used in a large number of applications such as robotic movement control, vehicle control, blind man’s walking stick, medical equipment, etc. There are many methods available for distance measurement but measurement using Ultrasonic sensor is one of the cheapest among…

In a present-day scenario, we are all so busy with our work that we don't have the time for cleaning our house properly. Constructing an Arduino based smart vacuum cleaner robot project has never been easier, affordable and convenient. The solution to the problem is very simple: creating your own automatic floor cleaning robot using Arduino offers a practical DIY…

Nowadays most of the car comes with keyless entry and push-button ignition system, in which you only need to carry the key in your pocket and just need to put your finger on the capacitive sensor on the door handle to open the car door. Here in this project, we are adding a few more security features to this system by using RFID and Fingerprint sensor. RFID sensor will…

We are living in the era of 5G and 5G-enabled devices; however, old technologies like the walkie-talkie system and RF communication system are still paramount in scenarios where a remote, short-distance, cheap, and low-cost communication is required. For example, if you have a building or heavy-weight bearing construction company, then your workers need to communicate with…

Robotic Arms are one of the fascinating engineering creations and it is always fascinating to watch these things tilt and pan to get complex things done just like a human arm would. These robotic arms can be commonly found in industries at the assembly line performing intense mechanical work like welding, drilling, painting, etc., recently advanced robotic arms with…

There are many pulse-oximeter sensors available in the market for medical purposes, and in one of our previous projects, we also made an IoT-based Heart Rate Monitor where the data is sent from a device to the cloud. Now, here in this project, we will do the same thing but differently with a different mindset. We will make the project using a…

In this tutorial, we are going to build a handheld game console using Arduino Pro Micro, Arduboy package, and a handful of hardware. For those who don’t know, Arduboy is an 8-bit, credit-card-sized programmable gaming system inspired by Nintendo Gameboy. Arduboy is a game development system based on the popular open-source Arduino platform. It is really easy to learn, share…