Hacks of Electronics
The ESP32 is a powerful microcontroller with built-in Wi-Fi and Bluetooth, making it an excellent choice for IoT applications. In this project, we will build a weather station using the ESP32 with BMP280 / BME280 air pressure sensor. The BMP280 measures temperature, pressure, and altitude, while the BME280 adds humidity measurement. The sensor data will […]
Light Dependent Resistor (LDR) are widely used in various applications where light detection is required, such as in automatic street-lights, camera light meters, and burglar alarm systems. This article will delve into the symbol, construction, working principle, characteristics, advantages, disadvantages, and applications of LDRs. Additionally, a simple LDR circuit to detect light will be explained […]
Let’s learn how to build an Environment Monitoring System with Arduino, ESP32, Soil Moisture Sensor, and DHT11 Sensor. Monitoring environmental conditions such as soil moisture, temperature, and humidity is essential for applications in agriculture, gardening, and climate control. We’ll cover the working principles of these sensors, how to interface them with Arduino or ESP32, and […]
Let’s get started with how to build a smart Water Quality Monitoring System using TDS sensor and ESP32 or Arduino. A TDS (Total Dissolved Solids) Sensor measures the total amount of dissolved solids in a liquid, typically water. Dissolved solids include inorganic salts and small organic substances. The measurement is expressed in parts per million […]
Drone sensors are the most critical and indispensable part of drone systems. They are like the eyes, ears, and tentacles of drones, responsible for collecting environmental data in all directions. These data are like keys that help drones unlock a variety of complex and critical functions such as stable flight, precise navigation, and clever obstacle […]
Let’s designing a PIR motion sensor circuit that uses a Passive Infrared (PIR) sensor to control a buzzer through a 555 timer for motion detection applications. Here’s a step-by-step guide to creating this circuit: Working Principle of PIR Motion Sensor: A Passive Infrared (PIR) motion sensor detects motion by sensing changes in infrared radiation. Here’s […]