Temperature and Humidity Sensor Module The DHT11 sensor is a very economical, simple temperature and humidity sensor available in the market, It uses a capacitive humidity sensor and a thermistor to detect the values and show them in digital output. Its compact size and sampling rate made this sensor popular among hobbyists. Some of the …
Temperature Sensor A temperature sensor is a very useful sensor and has many uses in the real world. It works on a basic principle. The output voltage of the pin is proportional to the temperature that the sensor detects. It is used to measure the temperature of the surrounding area using this property of proportionality. …
Flex Sensor A flex sensor or bend sensor is a sensor that measures the amount of deflection or bending. Usually, the sensor is stuck to the surface, and resistance of the sensor element is varied by bending the surface. It is very useful when we’re required to measure the extent of bending in anything. As …
Rain Drop Sensor Raindrop sensor is a board on which nickel is coated in the form of lines. It works on the principle of resistance. The rain Sensor module allows measuring moisture via analog output pins and it provides a digital output when a threshold of moisture exceeds. A rain drop sensor has 4 pins, …
Metal Touch Sensor Module This sensor is used to detect touches. It emits a signal if the front metal tip of the sensor is touched. The sensitivity of the sensor can be adjusted by means of a controller. It is ideally suited for threshold measurement. This means that the sensor emits a digital high signal …
Soil Moisture Sensor Module A soil moisture sensor is used to measure the moisture content in soil and send it as output, so that the required steps can be taken after that accordingly. It is used widely in today’s world and serves its purpose pretty well. A soil moisture sensor module has 2 probes, a …
Relay Module Relay Module A relay almost works like a switch, which can be electrically controlled. It can be turned on or off, letting the current go through or not, and can be controlled with low voltages, like the 5V provided by the Arduino pins. This relay module has two channels (those blue cubes). There …
Pulse Rate Heart Sensor Almost all of us know about those fancy and cool smartwatches that can measure our heart rates. There’s this sensor which is solely responsible for making them work. It’s the pulse rate heart sensor. An optical heart rate sensor measures pulse waves, which are changes in the volume of a blood …
PIR Motion Detector Module PIR sensors allow you to sense motion & to detect whether a human has moved in or out of the sensor’s range. They are small, inexpensive, low-power, easy to use and don’t wear out. PIRs are basically made of a pyroelectric sensor, which can detect levels of infrared radiation. PIR …
Triple Axis Accelerometer Have you ever wondered how your smartphone knows which way is up? It’s one of the most innovative features of today’s smartphones. They all have a tiny device called an accelerometer built into the circuitry that detects when you tilt the device from side to side. That’s how your smartphone knows when …