This section covers electronics projects based on NodeMCU ESP8266 board. The NodeMCU is basically an open source firmware, and also commonly used term for the popular ESP8266 Development Board, which is a low cost, development board designed for IoT applications.
In recent years, the demand for smart security and automated monitoring systems has increased significantly due to growing safety concerns and the need for real-time surveillance. Traditional security systems often require continuous human supervision, which can be inefficient and time-consuming. With the advancement of embedded systems and Internet of Things (IoT)…
In this tutorial, we will learn how to send an email from your ESP32 microcontroller. This feature allows important details such as sensor data, time of occurrence, images, and system status to be sent through email in a clear and reliable format. It is especially useful for event-based alerts, maintaining records, and monitoring systems over a long period. By…
This guide shows you how to build a motion detection system that sends instant WhatsApp alerts using the compact XIAO-ESP32 development board. When the IR sensor detects movement, the board immediately transmits a notification to your phone through the CircuitDigest Cloud platform. This wireless approach eliminates the need for GSM hardware or SIM cards, relying…
This ESP32 WhatsApp notification project shows how to send real-time WhatsApp alerts directly from an ESP32 using WiFi and the CircuitDigest Cloud WhatsApp API. The ESP32 reads sensor data, checks for a defined condition such as high temperature or motion detection, and immediately pushes a WhatsApp alert to your phone. And the best part is, you do not need a…
ESP32-CAM is a compact size, low-cost dev board with a camera, making it extremely convenient for camera-based applications. Even though it offers fewer GPIO pins compared to other ESP32 boards, it performs exceptionally well for focused tasks where imaging and connectivity matter the most. In this project, we’ll put the ESP32-CAM to good use by capturing a clear…
Text-to-Speech, or TTS, is a technology that converts written text into spoken audio. It is commonly used in voice assistants, accessibility tools, alert systems, kiosks, and smart devices. On computers and smartphones, TTS works smoothly because these systems have enough processing power and memory to generate speech locally. Microcontrollers are different. They…
Text-to-Speech, or TTS, is a technology that converts written text into spoken audio. It is widely used in voice assistants, accessibility tools, alert systems, kiosks, and smart devices. Today, ESP32 Text to Speech using AI has become a common approach for adding voice output to small electronic projects. On computers and smartphones, TTS works smoothly because…
By Shreerama T D
Every year, farmers work for months under the sun, investing their time, money, and effort to grow crops that feed the nation. But after harvesting, a painful reality unfolds a significant portion of onions and tomatoes never reach the market. Instead, they silently rot inside storage warehouses.
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By Ashish Spolia
The rapid evolution of the Internet of Things (IoT) has transformed the modern household from a passive living space into an intelligent, responsive ecosystem. As safety concerns and the demand for convenience grow, there is a critical need for integrated systems that can monitor environmental hazards, provide robust…
By Ann Theressa Babu
This project presents a prototype of a solar-powered wearable vital monitoring system designed to support individuals who work for long hours in outdoor and physically demanding environments. The system uses the Analog Devices MAXREFDES117 optical heart-rate module to measure heart rate and blood-oxygen saturation using photoplethysmography (PPG) signals.
An…
By Kartik Khandelwal
Core Purpose: NeuroBand is a specialized smart safety armband engineered to provide timely assistance to elderly and high-risk individuals during emergencies. Its primary goal is to mitigate the risks associated with falls and medical crises while simultaneously addressing the industry-wide challenge of frequent false alarms.The Global Context of Falls:
Global…
By Shekhar Nandanwar
The rapid advancement of Internet of Things (IoT) technology has made smart home and smart environment monitoring systems increasingly accessible and affordable. Embedded systems powered by low-cost, high-performance microcontrollers such as the ESP32 series now allow developers to create feature-rich, user…
