MQ-135 Air Quality Sensor Tutorial
The MQ-135 “air quality” sensor is part of the MQ series of gas sensors that uses a chemical-sensitive element The resistance of such elements varies when exposed to certain...
Flame Sensor Project: Comprehensive Guide
Flame sensors are found from the simplest gas stoves to huge industrial plants There are different types of fire sensors -- some cheap, some expensive Yet they’re all built for...
How to Use ADXL345 Accelerometer with Arduino
The ADXL345 is an integrated circuit that measures acceleration in 3 axes Like most sensors, this device comes with an easy-to-use breakout board and is usable through SPI or I2C...
A Better Arduino Color Sensor using TCS230
Last time, I showed how easy it is to detect colors using the Pixy2 camera However, the camera’s price might be too expensive for some Luckily, there is a much cheaper option to...
Raspberry Pi Ultrasonic Sensor Tutorial
An ultrasonic sensor is a common tool for measuring the distance of an object in front of it While I recommend using an Arduino with ultrasonic sensor to achieve real-time...
How to Interface a Thermistor
A thermistor is a special resistor whose resistance varies with temperature Learn how to interface a thermistor with a microcontroller in this tutorial ...