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.
Explore Arduino Project Categories
Raspberry Pi HAT is an add-on board for Raspberry Pi with the same dimensions as Pi. It can directly fit on the top of Raspberry Pi and doesn’t require any further connections. There are hundreds of Raspberry Pi HATs available in the market and we also built Raspberry Pi Hat for 16x2 LCD. In this session we are going to build a LoRa Hat for Raspberry Pi on PCB. This…
SPI is a crucial communication protocol that is widely used to communicate among microcontrollers, SD cards, and various other sensors. SPI stands for Serial Peripheral Interface, it's a synchronous data transfer protocol where the master device could communicate with multiple slave devices as well as get data from them. It is synchronous because the master generates a…
We have been using Microcontroller Development Boards like Arduino, Raspberry Pi, NodeMCU, ESP8266, MSP430, etc. for a long time now in our small projects where most of the times distance between the sensors and board is not more than few centimeters at max and at these distances, the communication between the different sensor modules, relays,…
Scanning temperature at the entry gates of office, malls, shopping centers, etc. has become the “new normal” to tackle the current Covid19 pandemic. While it is possible to use a handheld IR thermometer to measure the temperature of each person entering the gate and note it down manually on a notebook, it is simply not the most effective way. We have already designed a…
Speedometers are used to measure the travelling speed of a vehicle. We previously used the IR sensor and hall sensor to build Analog speedometer and digital speedometer respectively. Today we will use GPS to measure the speed of a moving vehicle. GPS speedometers are more accurate than standard speedometers because it can continuously locate the vehicle and can calculate the…
Inverter circuits are often needed where it is not possible to get AC supply from the grid. An inverter circuit is used to convert DC power to AC power and it can be divided into two types that is Pure Sine Wave Inverters or Modified Square Wave Inverters. These pure sine wave inverters are very expensive, where the modified square wave inverters are inexpensive. Learn more…
Arduino Uno, the most popular microcontroller among electronics hobbyists and students and its pretty easy to get started with embedded systems using Arduino But one drawback of Arduino is that it needs to be connected to the computer using USB cable to upload the code as it has done have any onboard support for wireless communication. And sometimes, it is very difficult to…
LoRa is a wireless Radio frequency technology introduced by a company called Semtech intended to be used to transmit bi-directional information to a long-distance without consuming much power. If you are new to LoRa, then learn about LoRa and LoRaWAN Technology and check LoRa interfacing with Arduino and Raspberry pi.
In…
The current COVID-19 scenario needs no introduction. While everyone is giving their best to move forward, it is important to act responsibly and tackle this problem collectively. Today in many public places and in other gatherings, it has become common to screen individuals for body temperature, as a preventive measure to check for fever. The device that is used to do this…
For medical or clinical applications, measuring human body temperature is an important parameter to determine the health condition of any individual. However, there are lots of ways to sense temperature but not everything has the accuracy to meet the clinical thermometry specifications. The MAX30205 temperature sensor is specifically designed for this application. Do note…
IR (Infrared) communication is simple, low-cost, and widely used wireless communication technology. IR light is somewhat similar to the visible light, except that the wavelength is slightly longer. This property of IR makes it undetectable to the human eye and perfect for wireless communication.
There are lot of applications where you need to decode…
Speech recognition technology is very useful in automation which not only gives you hands free control over devices but also adds security to the system. Apart from making voice controlled gadgets, speech recognition also provides significant help to people suffering from various disabilities.
In previous projects we built Arduino based Text to…
