Electronics Projects

In this project, we’ll be learning how to build an  ESP32 Speech to Text system using an ESP32 development board. We’ll use an I2S MIC to record speech and an OLED display to display the converted text. In addition to the display, the text will also appear in the serial monitor. Since ESP32 cannot run a Speech recognition model locally due to its hardware…

Think of a busy road where hundreds of riders pass every minute, some wearing helmets, many not, and imagine trying to monitor all of them manually. It’s almost impossible to keep track in real time. Now imagine a small device quietly watching the scene, capturing an image with a single trigger, and instantly telling you whether safety rules are being followed. That is exactly what this ESP32-…

The integration of addressable LEDs with the WLED firmware has revolutionized DIY lighting projects, allowing for complex visual effects with minimal to no coding.  However, most standard WLED-based clocks face significant limitations, such as time-drift during internet outages and continuous power consumption regardless of room occupancy and no alarms. To address these issues, this…

This tutorial shows you how to build a real-time object detection system using the ESP32-CAM module and the CircuitDigest Cloud Object Detection API. The system captures an image on button press, sends it to the cloud via wireless or internet connection, retrieves the identified objects with name(s), how many there were and how confident (how much certainty the algorithm has) of the object…

The primary objective is to develop a high-speed autonomous vehicle that utilizes a VL53L5CX multizone Lidar sensor to execute fluid, real-time swerving maneuvers instead of traditional "stop-and-turn" movements. By leveraging 8x8 spatial depth mapping, the system maintains continuous forward momentum while proactively navigating around obstacles via a timed S-curve…

Today we are building a simple yet very useful circuit using Temperature Sensor LM35. In this circuit, we are going to control the LEDs according to temperature around. If temperature goes beyond a particular level (50 Degree in this circuit) then Red LED will glow automatically, otherwise yellow LED remains on below that particular temperature. This threshold temperature…

From the past few years the demand of low power electronic portable devices has been increased rapidly. And there are very limited options to power these small portable electronic devices like alkaline batteries or solar power etc. So here we are using a different method to generate small amount of power which uses Piezoelectric sensor. Here we will build…

Nowadays, automation has become a common part of our daily lives. From simple tasks like operating a coffee machine to creating code for complex applications, many processes are now automated. However, most systems used for controlling devices depend on internet connections, mobile applications, or cloud platforms. In many places, internet availability may be poor or…

Imagine that you can control the electronic appliances of your home from anywhere inside the house, just using your Smart phone. In this project, we will use wireless Bluetooth technology to control the Home Electronic Appliances through a Android Phone. Bluetooth has a range of 10-15 meters, so that you can switch ON and OFF any electronic appliance within the…

Nowadays, everything is rapidly transitioning into the digital world, from the way we communicate to how industries operate and services are delivered. Traditional methods that once relied on manual processes are now being replaced by smart, automated, and interconnected systems. Building an automated attendance system using ESP32-CAM is a practical, affordable way…

Amplifiers are integral part of Electronics which are used to amplify low amplitude signals. Amplifier plays a very important role to boost the signal, specially in Audio and power electronics. We previously built many types of amplifiers including audio amplifiers, power amplifiers, operational amplifiers etc. Apart from them you can learn many other commonly used…

Proper waste sorting is very important for keeping our neighbourhoods clean and saving resources for the future. When we mix food scraps, plastic, paper, and batteries in the same bin, recycling becomes hard, landfills fill up quickly, and harmful chemicals leak into the soil and water. Over time, this creates bigger problems like higher cleanup costs and more damage…