Light aircraft often use a heading indicator as a way to know where they’re going. Retired instrumentation engineer [Don Welch] recreated a heading indicator of his own, using cheap ...

The hardware setup shown below includes the Arduino Uno R4, a DHT11 sensor, and the built-in Wi-Fi for email alerts. The DHT11 is connected with VCC to 5V, GND to ground, and the data pin to Digital ...

How Does the ESP32 WhatsApp Alert Message Work? The ESP32 uses its built-in WiFi to communicate with CircuitDigest Cloud WhatsApp API and send WhatsApp notifications whenever a sensor condition is ...

ABSTRACT: After the era of fossil fuel exploitation, researchers have begun to exploit solar energy, which is stored using rechargeable batteries. In Burundi, lead-acid batteries are often used for ...

This project demonstrates how to read temperature and humidity data using the DHT11 sensor and display it in real-time on the Blynk IoT App using an ESP32 or ESP8266 microcontroller. 📱 Project ...

1 Reseach Center in Infrastructure, Environment and Technologies (CRIET), University of Burundi, Bujumbura, Burundi. 2 Reseach Center in Applied Sciences, Higher Institute of Education (ENS), ...

HomeKit has changed how I interact with many of the rooms in my house. While lighting and cameras tend to have the spotlight for most people as they can easily see the impact, environment monitoring ...

Temperature sensors are an important yet often overlooked part of a HomeKit setup. Even working as a passive tracking device, I want to add them to every room to understand more about what’s happening ...

The Pixel 9 series has just been announced, and as you can see from the image below, the Pixel 9 Pro and 9 Pro XL still sport that small circle below the flash light. The temperature sensor is still ...

I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...