What is a soil moisture sensor? It is a type of sensor that is used to measure the moisture present in the soil. It has two parts, one that goes into the soil and another part that consists of a comparator to compare the signal value and then outputs data …
What is a sensor? A sensor is a device, module, machine, or subsystem that detects the changes in its environment, produces an output signal and sends the information to other electronics (e.g. a computer processor) for the purpose of sensing a physical phenomenon.Eg. Flame sensors, analog sensors, ultrasonic sensors etc. …
What is a collision sensor? The collision sensor is used for the detection of the collision of an object with the surrounding objects. It consists of a mechanical switch which when pressed outputs a signal, by measuring the signal voltage using a microcontroller a user can easily detect whether the …
What is an MQ3 Alcohol sensor? It is a semiconductor type sensor that is used to detect the presence of Alcohol. It consists of a sensitive material SnO2 for the detection of alcohol. SnO2 has less conductive in clean air as compared to alcohol gas. When the sensor is targeted …
7-segment displays are a type of digital display that is commonly used to display numerical information. They consist of seven individual segments that can be lit up to form the numbers 0-9. This simple and cost-effective technology is widely used in a variety of applications, from electronic calculators and digital …
What is a pulse? The number of times heartbeats in a minute is called a pulse. The normal pulse rate in humans is 60-100 beats per minute. How can pulse be measured? Heart rate can be monitored in four main ways: Electrocardiogram(ECG) Photoelectric pulse wave Blood pressure monitoring Phonocardiography Pulse …
What is an SW-420 Vibration Sensor module? The SW-420 Vibration Sensor module is a type of sensor module that is used to detect vibrations. It is also known as the vibration switch. It consists of an SW-420 vibration sensor that outputs voltage depending upon the intensity of the vibration. That …
What is a Solenoid Door lock? How does a solenoid door lock work? It is a type of door lock that is based on electromagnetism. It has two components, one that produces a magnetic field(a coil) and another is the moveable armature. When you apply a voltage to the solenoid …
What is the SIM800L GSM GPRS module? It is a quad-band GSM/GPRS module. It works on the frequencies GSM850 MHz, EGSM900 MHz, DCS1800 MHz, and PCS1900 MHz. A user can use this module to send and receive phone calls, send and receive messages. It has a built-in audio and microphone …
What is the HC-SR04 Ultrasonic sensor? It is an ultrasound-based sensor used for detecting an object and measuring the distance between the object and the sensor. It consists of an ultrasonic transmitter and a receiver. The transmitter transmits an ultrasonic wave that is not audible to human ears. The transmitted …