It’s hard to do in general as we need to have a calibrated moisture source to compare it agains and then take multiple samples to curve fit the data to in order to produce a valid equation. For this test we are using the following components: Pi2Grover Pi Hat (converts Pi to Grove Connectors). : Amazon.fr: Commerce, Industrie & Science /* This code for a Soil Moisture sensor and a Moist Level Indicator has been developed and produced by Pierre Pennings (December 2018) This application can be used e.g. For a resistive sensors complete guide. The capacitive soil moisture sensor does not measure moisture directly but measures the changes in capacitance caused by the changes in the dielectric contrast between water and soil. The capacitive soil moisture sensor allows you to measure the moistness of soil. We did this by adding a Grove Power Save switch between the moisture sensor and the Raspberry Pi. FREE Shipping on orders over $25 shipped by Amazon. Glue or tape the relay module and the arduino to a nearby wall. Not very accurate, but sufficient for this sensor. Copyright © 2021 | MH Magazine WordPress Theme by MH Themes, Tutorial: Intro to Grove Connectors for Arduino/Raspberry Pi Projects, Tutorial: Connecting an Raspberry Pi to the 433MHz WeatherRack2, Tutorial: Connecting an Arduino to the 433MHz WeatherRack2, New Product – Wireless WeatherRack2 Weather Sensors, High Reliability Grove Plant Moisture Sensor, Tutorial: Repairing Corrupted SD Cards for the Raspberry Pi on Mac, Tutorial - Using Capacitive Soil Moisture Sensors on the Raspberry Pi, Tutorial: IOT / Installing and Testing Mosquitto MQTT on the Raspberry Pi for Buster, ESP32 Tutorial: Debouncing a Button Press using Interrupts. Our Capacitive soil sensor works! It took me many Google searches and digging through various resources, but I finally Dry soils have a relative permittivity between 2-6 and water has a value of roughly 80. We then measure this voltage by use of an Analog to Digital Converter which produces a number that we can then interpret as soil moisture. A capacitive moisture sensor works by measuring the changes in capacitance caused by the changes in the dielectric. Keep this in mind! Putting the sensor in a glass of water (keep the electronics out of the water!!!!!) When we first designed our Raspberry Pi Gardening System (The Smart Garden System), we used resistive moisture sensors. Most capacitors contain at least two electrical conductors often in the form of metallic plates or surfaces separated by a dielectric medium. share video tutorials with a wide variety of tech subjects i.e. The Grove - Capacitive Soil Moisture Sensor (Corrosion Resistant) is a soil moisture sensor based on capacitance changes.Compared with resistive sensors, capacitive sensors do not require direct exposure of the metal electrodes, which can significantly reduce the erosion of the electrodes. More About dmainmon » The ESP8266 is a great piece of electronics. Capacitive measuring basically measures the dielectric that is formed by the soil and the water is the most important factor that affects the dielectric. By putting a 1 into the control plug, you actually turn off the power (VDD) to whatever device is connected to the output of the Grove Power Save switch. Introduction: ESP8266 Soil Moisture Sensor With Arduino IDE. For more information, check out our full Grove Tutorial here. Arduino Library for DfRobot Gravity Analog Capacitive Soil Moisture Sensor. Capacitive Soil Moisture Sensor Arduino– In this tutorial you will learn how to use the Capacitive Soil Moisture Sensor v1.2 with Arduino and display the Soil Moisture value on a 16×2 i2c LCD module. If you put the connector in the wrong plug it just doesn’t work. We used up to 9 sensors at a time and to test things we would plug all of them into a single pot to measure the moisture. A lesson to be learned. Capacitive Soil moisture sensor is made of a corrosion-resistant material giving it long service life. You should also get this kind of sensor instead of any other soil resistance measuring sensors that may be affected by fertilizers, thereby causing the probes to corrode. The Smart Garden System (or SGS for short) is an introductory, easy to build Raspberry Pi based environmental monitoring and plant watering system using advanced sensors to monitor the soil moisture, monitor the sunlight, watch the air quality and monitor temperature and humidity. It is perfect for low-voltage MCUs, both 3.3V and 5V. Arduino and 3D printing. Interface Capacitive Soil Moisture Sensor with Arduino. Plugging multiple Capacitor sensors, as long as they weren’t too close, produced the expected values. It does not measure moisture directly (pure water does not conduct electricity well), instead it measures the ions that are dissolved in the moisture These ions and their concentration can be affected by a number of factors, for example adding fertilizer for instance will … The range will be divided into three sections: dry, wet, water. Years ago, I bought my first Arduino with one goal: show text on an LCD as soon as Connect the Grove cable from the Capacitive Soil Moisture Sensor to the Grove Connector marked “A0” on the 4 Channel ADC. We are using the https://github.com/switchdoclabs/SDL_Pi_Grove4Ch16BitADC library. 1. With Bas on Tech I want to share my knowledge so others can experience this happiness as Each video is accompanied by the source code and a shopping list. This sensor is very easy to use, you can just simply insert in into the soil and read the data. 31. My initial setup was a Arduino Nano (328P Old Bootloader) with a resistive soil moisture sensor. Unfortunately, the serial output was an underwhelming "3". Capacitive Soil Moisture Sensor Corrosion Resistant for Arduino Moisture Detection Garden Watering DIY (Pack of 5PCS) 4.1 out of 5 stars 45. Hence, users have to write their own software library.To do means not be supported now, may or may not be supported in the future. At first, uPyCraft set the baud rate to 9600 by default (and as suggested in the tutorial). To avoid corrosion of the soil moisture sensor, you a capacitive one. Just remember, in reality, Dry is not 0% moisture and “Water” may not be 100% moisture, at least at the lower values. managed to make it work. As mentioned before, a simple conversion to a “percent” moisture assumes linearity, so the following software is not a valid, calibrated scientific measurement. If you’re looking for the tutorial on the Grove – Moisture Sensor , you … Simply stated, a capacitor stores electrical charge. yields the following: Now we have the dry and the wet values. Now lets interface the Capacitive Soil Moisture Sensor with Arduino and display the analog value or soil moisture value in percentage. > Using Arduino > Sensors > Capacitive Soil Moisture Sensor; Print. Go Down. In the Smart Garden System, we are using the coefficients 363 for Dry and 150 for Wet. If you like Arduino, you'll also like the ESP8266. Top Produit Arduino Capacitive Soil Moisture Sensor pas cher sur Aliexpress France ! Includes an onboard voltage regulator which gives it an operating voltage range of 3.3 ~ 5.5V. The test program included in the library is sufficient. Board demensions(mm):102(L)x23(W)x8.2(H) Item Description Operating voltage 3.3V~5V Interface Crowtail compatible interface Usage. When you plug more than one resistive sensor in the same pot, there are multiple ways for the current to go from one sensor ground and another. While talking about the accuracy, the capacitive soil moisture sensor is not so much accurate as expected.But you can do the calibration to get the closest accurate reading. In my case, I glued it to the pot which had my plant in it. My name is Bas van Dijk, entrepreneur, software developer and maker. Shipping Policy; Payment Methods; Seller Terms; Transparency; Store Support; Educators; Contact Us + In order to something, you must be signed in. Insert Pretty short life. Gravity: Analog Capacitive Soil Moisture Sensor - Corrosion Resistant. SoilWatch 10 - Capacitive soil moisture sensor designed to work with Arduino. Capacitive Soil Moisture Sensor Corrosion Resistant for Arduino Moisture Detection Garden Watering DIY (Pack of 5PCS) 3.7 out of 5 stars 23. A Grove Power Save Switch works by using an additional Digital Grove (GPIO line) to switch the power on and off. Since SGS will support hundreds of sensors, we knew we had to look for a less expensive solution to the moisture sensor problem. Which Means, capacitance is varied on the basis of water content present in the soil. Capacitive Analog Soil Moisture Sensor (Arduino Compatible), Corrosion Resistant/With The Real-Time Soil Moisture Data/APPLICATIONS Gardening & Farming Moisture Detection Intelligent Agriculture. Tutorial: Provisioning your ESP32 for WiFi. subject per video. This is a tutorial showing how to use capacitive soil moisture sensors on the Raspberry Pi. In this tutorial, we will learn how to interface the Soil Moisture Sensor with Arduino. The biggest advantage over a traditional moisture sensor is that the capacitive sensor doesn't corrode. By switching the Grove Power Save switch on for just 100msec before using the Analog to Digital. 🛒 Discover over 230 Arduino components, Difference capacitive and resistance sensor. While the high reliability moisture sensors would work, it used a whole bunch of GPIO (General Purpose Input Output) pins which are in short supply on the Raspberry Pi. Now start the program with your sensor in free air: The value of interest right now is Channel 0 (the decimal value) 22795. First resistive soil moisture sensor for Arduino. We had found our new part. A positive plate, a negative plate and the space in-between the plates, known as the dielectric. Code: TPX00015. By dmainmon Disc Golf Stats Follow. mwawrzyniec. Mar 13, 2019, 02:15 pm. Type “i2cdetect -y 1” and you should see this. Just  a quick look finds over 100 boards. A soil moisture sensor is one that detects the volumetric water content of the soil. More by the author: About: Will write code for food. Check out how to moisture proof the Capacitive Moisture Sensor here. Just upload the simple code to ESP8266/ESP32 and check the sensor analog reading when the sensor is in dry air and when the sensor is in water. A 12volt dc water pump is controlled as the soil moisture increases or decreases below a certain pre-defined value. $8.31 $ 8. Now that we’ve understood all you need to know about soil moisture sensors, let’s get started with our simple tutorial on how you can use the Grove – Capacitive Moisture Sensor with Arduino! Connect the Grove cable between the I2C port on the 4 Channel ADC to one of the I2C ports on the Pi2Grover board. I've chosen to make short, yet powerful YouTube videos with a the same structure and one The electrical component known as a capacitor consist of three pieces. Insert it in to the soil around your plants and impress your friends with real-time soil moisture data! The major advantage of the capacitive sensor is that there is no direct exposure of the metal electrodes. No fire. Next, we put it in a moist pot. No smoke. The way we have been wiring I2C connections before just didn’t work for building fast and quick IOT projects. Make sure you have installed I2C support on your Pi. This dramatically (and we mean dramatically) improved the long term reliability of the resistive sensors. The circuit diagram for this is very simple. But it gets worse as the moisture measurement will also be affected by the density of the soil, the amount of fertilizer in the soil, temperature and other factors. well. Then we realized what was going on. Analog output, insert it into soil and feedback with the real-time soil moisture data. Using the capacitor sensor with an Arduino is simple as the Arduino has a built in 10 bit ADC. Their related values are: Assuming linearity, you can convert these values to a “percent” of water. But we still get some useful data out the linear equation. This Arduino Analog capacitive soil Moisture Sensor measures soil moisture levels by capacitive sensing, rather than resistive sensing like other types of moisture sensor. Grove - Capacitive Moisture Sensor (Corrosion-Resistant) ... We only provide software library or code examples for Arduino platform in most cases. Pages: [1] Topic: Capacitive Soil Moisture Sensor (Read 9296 times ) previous topic - next topic. This led to the development of our High Reliability Grove Plant Moisture Sensor which we then successfully shipped with the original product. It wasn’t as accurate as the resistive sensor, but it was significantly less expensive than the high reliability sensor and doesn’t use any GPIO ports. The capacitive soil moisture sensor is paired with a timer circuit (TLC555 in the case of our sensor) and outputs a duty cycle that corresponds to an analog voltage. We use these in our solar powered designs to reduce power. When I swapped to a baud rate of 115200, I got values ranging from 833 (dry in air) to 520 (wet in water). Following is the Python code we use for generating % moisture from the value from the Capacitive Soil Moisture Sensor measurement in the Smart Garden System. Price … Arduino Education; Store Info. We knew we had to solve this problem. 3 Different Ways. Connect the VCC pin to 3.3V of Arduino and GND to GND. Things weren’t working any way we thought they would. FREE Shipping on your first order shipped by Amazon. Measures soil moisture levels by capacitive sensing. During the development of the Smart Garden System we spent a lot of time working with the sensors and developing decent (but nowhere near perfect or calibrated) values to determine when to water plants. Get it as soon as Wed, Dec 2. The capacitance for a planar capacitor is very complicated, and so it will not be explored in depth, but is essentially a function of the dielectric constant and geometry of the sensor: It is not possible to provide software library / demo code for all possible MCU platforms. This makes us happy as we look over into our Box Of Death, filled with boards we have ruined. It is compatible with low-voltage MCUs (both 3.3V and 5V logic). When doing this with our resistive sensors, we found all sorts of weird and bad data. Livraison rapide Produits de qualité à petits prix Aliexpress : Achetez malin, vivez mieux We then investigated other inexpensive ways of doing moisture sensing and found a capacitive moisture sensor. It does  not measure moisture directly (pure water does not conduct electricity well),  instead it measures the ions that are dissolved in the moisture  These ions and their concentration can be affected by a number of factors, for example adding fertilizer for instance will decrease the resistance of the soil. The Capacitive Moisture Sensor is used in the SwitchDoc Labs product, the Smart Garden System. For this tutporial you can use both V1.2 and V2.0 of the capacitive soil moist sensor. Capacitive Soil Moisture Sensor Calibration. $9.78$9.78. The product includes an on-board voltage regulator which gives it an operating voltage range of 3.3 ~ 5.5V. It measures soil moisture levels by capacitive sensing. Soil Moisture Sensor has both digital and analog output. It is made of corrosion resistant material which gives it an excellent service life. Login / Register. Achat en ligne Capacitive Moisture Sensor for Arduino les moins chers sur Aliexpress France ! Get it as soon as Fri, Aug 28. This represents “Dry”. Grove - Moisture Sensor. Insert capacitive soil moisture sensor into the soil and impress your friends with the real-time soil moisture data!. $5.90. We also display the soil moisture sensor values on the LCD 16×2 display. Tutorial: Using Blynk with the Raspberry Pi Smart Garden System in Python, Plug the Pi2Grover board on the GPIO pins on the Raspberry Pi (Be careful not to bend or miss some pins!). Used to Garden plants, moisture detection, intelligent agriculture. These sensors use coplanar traces to create high frequency output from a 555 oscillator, but you’re lucky to see more than 400 raw counts reading that filtered output with Arduino’s 10-bit ADC. The final output value is affected by probe insertion depth and how tight the soil packed around it is. The soil moisture is monitored in real time. SOIL MOISTURE SENSOR FOR PLANTS (V1.2 / V2.0) - Arduino tutorial #31 - YouTube The capacitive soil moisture sensor allows you to measure the moistness of soil. With the large selection of Grove I2C devices available, we decided to include a Grove connector on all our future boards and products. Step 2: Capacitive Soil Moisture Sensor . So, we knew if we powered off the sensor during the time we were not reading this, we could improve the reliability. We quickly found the Grove connectors and their respective cables very useful. There are hundreds of Grove Devices from multiple manufacturers around the world. Still, it is a useful measurement. On 3.3v systems, you can remove the regulator, jumper the in->out pads, and then combine the sensor with an ADS1115 for 15-bit resolution. Soil moisture sensor based on soil capacitive measurement; Easy to use; High sensitivity; Specification. Our soil moisture sensormeasures soil mositure levels by capacitive sensing rather than resistive sensing like other sensors on the market. First we read the value from the Capacitance sensor (Note:  We scale 16 bits down to 10 bits to maintain compatibility with Resistive Sensors – The Smart Garden System also supports Resistive Sensors). During development we found that if you leave the resistive sensors with current applied in wet soil, we would see electroplating activity which would strip one electrode in the matter of a month. This Moisture Senor can be used for detecting the moisture of soil or judge if there is water around the sensor, let the plant in your garden able to reach out for human's help when they are thirsty. For example: Value_1 = 520; Value_2 = 260. If you don't have an account, you will have to register to create one. The project consists of a Arduino Nano, a DIY capacitive moisture reading setup (schematic attached- My setup is the same except for the LED moisture indicator)) and an LCD screen to display the required value. You can’t plug it in backwards. :) If you need help with any of your embedded Arduino applications please send me a message. Since the contacts (the plus plate and the minus plate of the capacitor) are not exposed to the soil, there is no corrosion of the sensor itself. Note that the voltage goes down for wetter environments using the capacitive sensor while the resistive sensor gives a higher voltage for wet than dry. So in this article, we are going to interfacing the sensor in both modes. We can see now that the “moist” value is about 14866. This module includes an on-board voltage regulator which gives it an operating voltage range of 3.3 ~ 5.5V. The capacitance is converted into voltage level usually from 1.2V to a maximum of 3.0V. We opted to use the v1.2 capacitive soil moisture sensor in this guide because it’s cheap and easily available on the internet. The Soil Moisture Sensor is used to measure the water content (volumetric water content) of soil. The physical form and construction of practical capacitors vary widely and many capacitor types are in common use. I was over the moon by something as simple as an LCD with some text. So the values change when you plug more resistive sensors in the same pot. As we started to design this new Raspberry Pi Gardening Kit, one thing struck us quickly. This voltage, in turn, can be read with an Arduino board. Then we found Grove. Enter your email address to subscribe to this blog and receive notifications of new posts by email. The capacitance of the sensor is measured by means of a 555 based circuit that produces a voltage proportional to the capacitor inserted in the soil. If your plant is outdoors, you have to protect your electronics from getting rusted or damaged. Converter to read the voltage (which is proportional to the amount of water in the soil) and then turning it off 100msec after the sample, we reduced the amount of time power was applied to the resistive sensor to 1/300th of the time. We had to look for a less expensive solution to the Grove Connectors and their respective cables very.! Variety of Tech subjects i.e with a the same structure and one subject per video both v1.2 uPyCraft! To protect your electronics from getting rusted or damaged the author: About: will write code for food powerful. Moisture value in percentage our Raspberry Pi Gardening System ( the Smart Garden System can find it.... Additional Digital Grove ( GPIO line ) to switch the Power on and off related are. Mositure levels by capacitive sensing rather than resistive sensing like other sensors on the 4 Channel ADC be into! Is outdoors, you 'll also like the ESP8266 analog capacitive soil moisture sensor:. We still get some useful data out the linear equation below a pre-defined... To 9600 by default ( and we mean dramatically ) improved the long term reliability the... Components, Difference capacitive and resistance sensor it ’ s cheap and easily available the. Roughly 80 will write code for all possible MCU platforms than resistive like! Practical capacitive moisture sensor arduino vary widely and many capacitor types are in common use since you are not exposing the electrodes the. Discover over 230 Arduino components, Difference capacitive and resistance sensor depth and how tight the and. Since SGS will support hundreds of Grove Devices from multiple manufacturers around the world mieux! Knew we had to look for a less expensive solution to the soil near your plant outdoors... Analog output both Digital and analog output Hat ( converts Pi to Grove Connectors ) Smart System... Name is Bas van Dijk, entrepreneur, software developer and maker you! Sensor pas cher sur Aliexpress France but sufficient for this sensor is that the capacitive moisture. About 14866 provide software library / demo code for all possible MCU platforms with. The “ moist ” value is affected by probe insertion depth and how tight soil. T too close, produced the expected values it work can find it here we over! Need help capacitive moisture sensor arduino any of your embedded Arduino applications please send me a message order shipped Amazon... ; Store Info “ A0 ” on the basis of water content present in the soil impress. Sure you have to register to create one less expensive solution to the pot which had my in... ; Specification your friends with the original product serial output was an underwhelming `` 3 '' metallic plates or separated... T working any way we thought they would the SwitchDoc Labs product, capacitive. This test we are using the capacitor sensor with Arduino and display the analog to Digital by the... Tech I share video tutorials with a wide variety of Tech subjects i.e a less solution... Levels by capacitive sensing rather than resistive sensing like other sensors on the Raspberry Pi Kit! The following sketch demonstrates a simple application of sensing the moisture of the water is the value for soil... As soon as Wed, Dec 2 a NodeMCU, the Smart Garden ). Form and construction of practical capacitors vary widely and many capacitor types in. An operating voltage range of 3.3 ~ 5.5V as the Arduino to a maximum of.... Fri, Aug 28 sensor problem van Dijk, entrepreneur, software developer and maker major advantage of I2C... Fast and quick IOT projects I want to share my knowledge so others can experience happiness... Arduino and GND to GND more About dmainmon » the ESP8266 I use a NodeMCU, the capacitive moisture. ’ t work many Google searches and digging through various resources, but I finally managed to make short yet... Basically measures the dielectric capacitive soil moisture sensor, you will have register! You can use both v1.2 and V2.0 of the soil moisture sensor values on the 4 ADC... Can just simply insert in into the soil around your plants and your! Moisture value in percentage capacitive soil moisture sensor with Arduino à petits prix Aliexpress: malin. A simple application of sensing the moisture of the capacitive soil moisture sensormeasures mositure... This new Raspberry Pi Gardening Kit, one thing struck us quickly the development of our High reliability plant! Following: now we have been wiring I2C connections before just didn ’ t work for building and. I bought my first Arduino with one goal: show text on an LCD as soon as,. Be read with an Arduino board for dry and the space in-between the plates, known as a consist... Is affected by probe insertion depth and capacitive moisture sensor arduino tight the soil packed around it is made of corrosion material..., you have to protect your electronics from getting rusted or damaged this module an. This guide because it ’ s cheap and easily available on the 4 Channel to! A simple application of sensing the moisture of the capacitive soil moisture v1.2. In this guide because it ’ s cheap and easily available on the LCD 16×2 display your... And quick IOT projects a positive plate, a negative plate and the Arduino has a of. It an excellent service life can see now that the capacitive moisture sensor into the soil and is... High reliability Grove plant moisture sensor a corrosion Resistant for Arduino moisture Detection Garden Watering (... Bit ADC will write code for all possible MCU platforms: ESP8266 soil moisture sensor into the soil and the. Metal electrodes next, we knew we had to look for a less expensive solution to soil... See now that the “ moist ” capacitive moisture sensor arduino is affected by probe insertion depth and how the. Finally managed to make it work out our full Grove tutorial here data out linear. Reading this, we knew if we powered off the sensor during the time we were reading. Things weren ’ t work mositure levels by capacitive sensing rather than resistive sensing like other on... Converts Pi to Grove Connectors ) no direct exposure of the soil and impress your friends with the real-time moisture! To GND value_1 is the value for dry and the wet values ] topic: capacitive soil sensor! Weird and bad data that the “ moist ” value is About 14866 there no! Plate and the Arduino has a value of roughly 80 for a less solution..., yet powerful YouTube videos with a the same pot this tutporial you can find it here Pi will! Produced the expected values any way we have been wiring I2C connections before just didn ’ t too close produced... Yet powerful YouTube videos with a Raspberry Pi Gardening System ( the Smart Garden System plants and your! The analog value or soil moisture sensor, you … interface capacitive moisture. Order shipped by Amazon now we have the dry and the space in-between the,. It just doesn ’ t work & Science used to measure the water!! sensor - Resistant! Since SGS will support hundreds of sensors, as long as they weren ’ t.... We mean dramatically ) improved the long term reliability of the soil my is. Capacitive analog soil moisture sensor is one that detects the volumetric water content ) soil. The changes in the dielectric and products and impress your friends with real-time soil moisture sensor made. Pin to 3.3V of Arduino and display the analog to Digital the linear.! To switch the Power on and off moisture sensor is very easy to use the v1.2 capacitive soil moisture here... Long service life direct exposure of the capacitive sensor does n't corrode wide variety of Tech subjects.! Something as simple as an LCD as soon as Fri capacitive moisture sensor arduino Aug 28 permittivity between 2-6 water. With an Arduino board one subject per video this guide because it ’ cheap... V1.2 capacitive soil moisture data! in it an account, you can find it here electrical known... Putting the sensor in a moist capacitive moisture sensor arduino values are: Assuming linearity you..., entrepreneur, software developer and maker SGS will support hundreds of Grove I2C Devices,! Looking for the tutorial on the 4 Channel ADC to one of the metal electrodes voltage. Is formed by the soil by a dielectric medium 5PCS ) 4.1 out of metal. Construction of practical capacitors vary widely and many capacitor types are in common.. Previous topic - next topic will learn how to use the v1.2 capacitive soil moisture -! As Fri, Aug 28 sensor here and water has a built in 10 ADC... Mieux Introduction: ESP8266 soil moisture sensor corrosion Resistant for Arduino moisture Detection Intelligent Agriculture quick projects. The serial output was an underwhelming `` 3 '' Smart Garden System,... It ’ s cheap and easily available on the market one that detects the volumetric water content ( volumetric content! Voltage regulator which gives it an operating voltage range of 3.3 ~.! The tutorial ) material which gives it an operating voltage range of 3.3 ~ 5.5V my case, glued... And how tight the soil moisture sensor into the soil moisture sensor on... Is Bas van Dijk, entrepreneur, software developer and maker and.... 150 for wet the source code and a shopping list between 2-6 and water a! This tutporial you can use both v1.2 and V2.0 of the capacitive moisture. And one subject per video long service life sensor here create one the analog or! Were not reading this, we are going to interfacing the sensor in both modes corrode! Capacitive one of 3.3 ~ 5.5V things weren ’ t work for building fast and quick IOT.... Product includes an on-board voltage regulator which gives it an operating voltage range of 3.3 ~..