sensors of arduino
1. HC-SR04 Ultrasonic Sensor
The HC-SR04 Ultrasonic sensor is a 4 pin Sensor module, whose pin names are Vcc, Trigger, Echo and Ground respectively. This sensor is a very popular sensor used in many applications where measuring distance or sensing objects are required.
2. IR Proximity Sensor
IR Proximity sensor is an electronic device, that emits the light in order to sense some object of the surroundings. An IR Proximity sensor can measure the heat of an object as well as detects the motion. Usually, in the infrared spectrum, all the objects radiate some form of thermal radiation .
3. Soil Hygrometer Humidity Detection Sensor
Soil Hygrometer Humidity detection Sensor is used to detect moisture. When the soil is dry the module outputs a high level, otherwise outputs low.
4. Digital Barometric Pressure Sensor
Digital barometric pressure sensor measures the absolute pressure of the air around it. It has a measuring range from 300 to 1100hPa with an accuracy down to 0.02 hPa. It can also measure altitude and temperature. The BMP180 barometric sensor communicates via I2C interface.
5. Photoresistor sensor
A Photoresistor sensor is a electrical resistance is altered depending on the light intensity falling on it. The more intense is the light the more free carriers are formed and therefore the lower gets the resistance of the element.
6. Digital Thermal Sensor
Digital Temperature Sensor provides 9-bit temperature readings. Digital temperature sensors offer excellent precise accuracy, these are designed to read from 0°C to 70°C and it is possible to achieve ±0.5°C accuracy. As simple as that.
7. MQ-2 Gas Sensor
MQ-2 Gas Sensor detects combustible gasses and smoke of an area. We use this sensor to make advance level industrial security system projects.
8. PIR Motion Sensor
PIR Motion sensors allow you to sense motion, almost always used to detect whether a human has moved in or out of the sensors range. They are small, inexpensive, low-power, easy to use and don't wear out. This sensors are commonly use in homes or businesses institutions as a security systems projects.
9. Humidity and Rain Detection Sensor
Humidity And Rain Detection Sensor detects humidity through two sensors which are to be used alternatively to let us know when there is water on the ground because it's raining, or when the water level in a flowerpot is too low and it needs watering. This sensor is commonly used in home automation projects .
10. IR Infrared Flame Detection sensor
IR Flame Detection Sensor detects the presence of fire or flames. Mostly this sensor are used in industrial types projects .
11. DHT11 Temperature And Humidity Sensor
DHT-11 Temperature And Humidity Sensor is an ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air .
12. Speed Measuring Sensor
Speed sensor works with a sprocket that goes to either the output shaft of the transmission or the crankshaft of the engine. When the shaft rotates, the sprocket attached to it also rotates.