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Soil Moisture Sensor (Resistive) Guide

Posted by Kelly M on

Soil Moisture Sensor (Resistive) Guide

The Soil Moisture Sensor Module (Resistance) consists of two probes which are used to measure the volumetric content of water. The two probes allow the current to pass through and then it gets the resistance value to measure the moisture value. However, the major issue with resistive soil moisture sensor is the corrosion of the sensor probes. it is because it is in contact with the soil while there is also a DC current flowing which causes electrolysis of the sensors.  In this article, we will talk about how to wire and set up the module for operation with an...

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Flame Sensor Module Guide

Posted by Kelly M on

Flame Sensor Module Guide

The flame sensor module consists of an IR receiver, resistor, capacitor, potentiometer, and a comparator LM393 in an integrated circuit. It can detect infrared light with a wavelength ranging from 700nm to 1000nm. The flame probe converts the light detected into the form of infrared light into current changes.    The flame sensor module operates between 3.3V to 5V DC with a digital output that indicate the presence of a high infrared signal. When it is triggered, it will output a HIGH.    How it works The flame sensor is very sensitive to IR wavelength. The analog output (A0) outputs a...

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MQ-2 Smoke Sensor Guide

Posted by Kelly M on

MQ-2 Smoke Sensor Guide

The MQ-2 Smoke Sensor is a very popular module for detecting smoke and to flammable gases like LPG, Butane, Propane, Methane, Alcohol, and hydrogen. It outputs different voltage accordingly to the smoke/gas level that exists in the atmosphere. The sensor outputs a voltage that is proportional to the concentration of smoke/gas. In other words, the greater the gas concentration, the greater the output voltage. The lower the gas concentration, the lower the output voltage.  The smoke sensor has a built-in potentiometer that allows you to adjust the sensor sensitivity according to how accurate you want to detect gas. It has...

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MQ-3 Alcohol Ethanol Gas Sensor Guide

Posted by Kelly M on

MQ-3 Alcohol Ethanol Gas Sensor Guide

The MQ-3 sensor is one of the most commonly used sensors in the MQ sensor series. It is a chemiresisotors because sensing is based on the change of resistance of the sensing material when it is exposed to alcohol.  In this article, we will talk about how to wire and set up the module for operation with an Arduino Board.   Wiring  MQ-03 alcohol sensor operates at 5V DC and draws around 800mW. It can detect alcohol concentrations anywhere from 25ppm to 500 ppm. It comes with both the digital and analog output pins. The analog output voltage provided by...

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DSO138 Oscilloscope Kit Guide

Posted by Kelly M on

DSO138 Oscilloscope Kit Guide

Our DSO138 Oscilloscope Kit is designed for ease in assembly and operation as all the parts are pre-soldered and the MCU has been pre-programmed with no additional requirement for programming. It uses a 2.4 inch TFT LCD as its display element that will display nice clear waveforms. If you don't like the default program, you can also upgrade or hack it for your application. In this article, we will walk you through the set up and the operation with Oscilloscope Kit.  The kit comes with all the parts that have been soldered onto the PCB board, and 3 instructions manual.  Parts DSO138 Oscilloscope Kit 12V...

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