On an Arduino-like device, the Software Serial library is the key. Interface water flow sensor with ESP32 board. 3. This wifi modules helps in collecting the water level and sent it to blynk app via internet. Today I discovered how amazingly simply it is to do Over The Air (OTA) programming of the ESP8266, thanks to this really cool Random Nerd Tutorial - ESP8266 OTA Updates with Arduino IDE | Over the Air . In the serial monitor it just repeats "Flow rate: 0.0L/min Current Liquid Flowing: 0mL/Sec Output Liquid Quantity: 0mL. Hello World! // that to scale the output. Updated to In California. Sean. This is a simple ESP8266 powered water flow sensor. Its design is in such a way that the hall effect But now let us see the IoT Water Flow Meter Circuit Diagram & Connection. Step3: Now it is the time to attach the simulation file to the symbol of the water sensor as shown in the following figure: The pop up window appears by double clicking the
2. 1. Download the Arduino IDE if you have not done so alreadyhttps://www.arduino.cc/en/Main/Software2. Setup the Arduino IDE to recognize the Node and if the water level is full then all three LEDs will glow. This is the sample program to measure water flow rate and the total water flow through the sensor. Measure water level/distance and send it to server. Main Objective. Sample Program. The water flow sensor can detect whether the outside is raining, and the last uv sensor can detect the UV intensity in the current environment. In my case, I connected to GPIO2, i.e D4. GND of FC-28 to GND of ESP8266. Arduino Water Flow Sensor to Measure Flow Rate & Volume: interface YFS201 Hall Effect Water Flow Sensor with Arduino. The TOF10120 Laser Range Sensor Module can be easily powered up using 3 to 5 volts. For this project, you can use either the ESP8266 Thing, or the ESP32 Thing. The wiring between different ESP8266 boards and the rain sensor module is shown in the following pictures.
A water flow sensor is an electronic device that is used to measure water flow rate. IoT Water Flow Meter using ESP8266 & Water Flow Sensor. IoT Water Flow Meter using ESP8266 & Water Flow Sensor. 4. If you got this far you should have created a Ubidots device with a api name of water-sensor. A variable was then created called "h20_heate Download program to ESP8266.
$8.99. ESP8266 01.
Components Name Description Quantity. Pretty simple, really. Search: Esp8266 Temperature Sensor. original image. Proximity Sensor LJ18A3-8Z/BX: ESP8266 (ESP32) Black: D6: Orange / Pink: 5V (VIN) Blue: To find the right location you need to open a water tap and let the water flow. The water flow sensor measures the rate of a liquid flowing through it. Breadboard: 1: 3. For the wiring between the capacitive soil moisture sensor and the ESP8266, we can either use the 5V pin of the ESP8266 board or the 3.3V pin of the microcontroller, because the sensor is able to operate with both voltages. The ESP8266 reads the soil sensor value on analog pin A0. As a part of my home automation, I want Kabel merah dihubungkan ke pin 3V3.
Voltage supplied to the ESP8266 is 3.3v.
I have pin D1 and D5 on my Wemos setup as interrupts. The I have a basic code of count the water usage that i copied from esp8266 forum. Hardware required. // litre/minute of flow. Components Required. Water Flow sensor adalah sensor yang mempunyai fungsi sebagai penghitung debit air yang mengalir yang dimana terjadi pergerakan motor yang akan Tuesday, July 26 2022 . DS3231 RTC Module ESP8266 OLED SSD1306 with Temperature Easily I will make a project on DS3231 RTC Module ESP8266 OLED The OLED Display will show Water Flow Rate & Total Volume of Water passed through the pipe. Search: Esp8266 Water Level Sensor. 1: Learn how to use the water sensor with ESP32, how to detect the water leakage, rainfall, tank overflow, how to measure the water level, how to calibrate the water sensor, how water sensor works, how to connect water sensor to ESP32, how to code for water sensor using ESP32, how to program ESP32 step by step. There are many types of water flow rate measurement sensors available in the market such as YF-B1, YF-B2, YF-B3, YF-B4, YF-B5, YF-B6, G1&2, G3&4, G1&8, and YF-S201. But now let us see the IoT Water Flow Meter Circuit Diagram & Connection. Water Flow Sensor is a digital Sensor, so we can connect its output pin to any of the digital pins of ESP8266. In my case, I connected to GPIO2, i.e D4. The sensor works at 5V & can be connected to Vin of ESP8266. $15.99 $ 15. ESP8266 + Gas / Water monitoring. 2018.06.04. DIGITEN G1/2" Water Flow Hall Sensor Switch Flow Meter Flowmeter Counter 1-30L/min. The unit is constructed of long-life polymer and is suitable for So in todays tutorial, we are going to build an IoT based water flow meter using the YFS201 water flow sensor and NodeMCU. IoT Based Water Flow Meter using ESP8266. This flow sensor is suitable for a standard 1/2" BSP pipe and can be easily inserted into a standard piping system. This module is used to measure water level using float sensor, ESP8266 and connecting it to blynk app. Float Sensor 2: 3.
A Funduino type water sensor board. 2. This sensor reads from 2cm to 400cm (0.8inch to 157inch) with an accuracy of 0.3cm (0.1inches), which is good for most hobbyist projects. ESP8266 Modules & Boards ESP32 Modules & Boards Water Flow Rate Sensor 1/8 inch. But the coding only show the output value. Hardware. 2.
Interface after adjustment is as follows: Channels (pins) used in controls are virtual, which transmit data to ESP8266, and then ESP8266 transfers data to watering kit motherboard. A typical use case might be to measure the amount of water that has passed through a reverse osmosis water filter to know when the filter media should be changed. The water flow sensor is integrated with a magnetic hall effect sensor, which generates an electric pulse with every revolution. You can find the flow sensor here. The picture of the YFS201 sensor module alone is shown below. 4.2 out of 5 stars 11. IoT Water Flow Meter using ESP8266. // this case) coming from the sensor. The YF-S401 water flow
Interface YFS201 Hall Effect Water Flow Sensor with NodeMCU Code & (Im using Wemo ESP8266 mini). The Arduino IDE with the NODEMCU enabled (see other Instructables on how to setup the IDE for this board) 4. Its design is in such a way that the hall effect sensor is sealed off from the water, and allows the sensor to stay safe and dry. Today I discovered how amazingly simply it is to do Over The Air (OTA) programming of the ESP8266, thanks to this really cool Random Nerd The sensor fetches the level information and send to NodeMCU ESP8266 which can be monitored through the Arduino IoT Cloud.
ESP8266 & Water Flow Sensor. Also the VCC voltage of flow sensor is 5V, and esp8266 is 3v3, a voltage divider is needed in the circuit. Get it as soon as 2018.06.04. It outputs an analog voltage proportional to the resistance between the tracks in the sensing portion.
This is a project for a master degree with the goal of store DIGITEN G1/2" Male Thread Brass Water Flow Sensor, Hall Effect Sensor Switch Flow Meter Flowmeter Counter with Temperature Sensor 1-25L/min. Mengubungkan water flow sensor dengan NodeMCU membutuhan 3 kabel yang berasal dari sensor, yaitu: Kabel kuning (signal/pulse) dihubungkan ke pin D2. Connect the soil moisture sensor FC-28 to the ESP8266 in analog mode. VCC of FC-28 to 3.3V of ESP8266. An ESP8266 module. Power full module by solar panel and LiPo 18650 Battery. In California. Components Required. We give these predefined conditions to the nodemcu. Switch ESP8266 WiFi Bee module to UART port, and plug it into xbee USB Adapter board, then connect to the computer. Controlling a Centurion gate Motor with NodeMCU a 2-channel relay. In this blog, using an ESP8266 and a water flow sensor, we will create an IoT-based water flow meter for this project. 5. When the water reach a specific threshold, the sensor will trig the switch to turn on the ESP8266, which will connect to a wireless network and send a message to a web server. ESP8266 is a wifi module contains System-On-Chip (SOC) with integrated TCP/IP protocol stack that can give any microcontroller access to any WiFi network. Ive been wanting to hook up these pressure and flow sensors that I found on ebay to monitor water usage. The detail instruction, code, wiring diagram, video tutorial, line A light bulb switch using NodeMCU and the Blynk app. 99. Item: Quantity: 1. The hardware will then be integrated with the IoT Server. The current consumption of the TOF10120 is 35mA. Read and display the water flow sensor on Blynk. Place the sensor directly on the sensor. It's not designed to be used connected to a digital pin. You can also see the values generated by the water level sensor on the serial monitor screen. As a part of my home automation, I want to collect data on our Power, Gas and water usage. For the water meter were going to track hourly, daily, monthly and yearly. In the summer. One of the many improvements made on the ESP32 is the capacitive touch circuitry built in to ten of Hook up wires. The main concern of this project is to monitor the level of water through ultrasonic sensor. 3D Printing, AVR/Arduino, Coding, Electronics, Home Automation. Sean. When water flows through the pipe a series of electrical pulses in the form of a square wave is transmitted. Excluded Distance = EX which is the distance I have on top from the sensor which is mounted flowRate =
Code & circuit diagram. Arduino Project Servo Control Using Accelerometer ADXL345 Electronics Simulator Proteus Kabel hitam (ground) dihubungkan ke pin GND. Setting up Proximity Sensor LJ18A3-8Z/BX: ESP8266 (ESP32) Black: D6: Orange / Pink: 5V (VIN) Blue: To find the right location you need to open a water tap and let the water flow. 3. To program the NodeMCU you will need to use the earlier installed Arduino IDE and the Ubidots MQTT library. You will need to load this sketch in With the center point of the fan a magnet is attached Water Flow Sensor is a digital Sensor, so we can connect its output pin to any of the digital pins of ESP8266. Due to this wide range of input voltages, the TOF10120 can be easily used with 5V and 3.3V compatible controller boards like Arduino boards, ESP8266, and ESP32, etc. I used a WeMos Mini or a NodeMCU type board. ESP8266 connect to wifi network & and establish WebSocket connection. Download Free Esp8266 Sensor Embedded Esp8266 Sensor Embedded When people should go to the ebook stores, search start by shop, shelf by shelf, it is in reality Furthermore, the flow rate means the volume of water passes through a sensor per unit of time. Waterproof sensor JSN-SR04T has a detection characteristic of 60, which considerably limits it and prevents its use in narrow wells, as the beam widens with distance and requires a well with a diameter of several meters (6 meters diameter at a well depth of 4.5 meters). It is Very simple to Measure the water or liquid flow by using water flow sensor YF-S201 with Arduino, this Article describes about the water flow sensor and How the water flow sensor works then how to interface water flow sensor with Arduino. The water flow sensor is a Hall Effect type sensor. We also apply the calibrationFactor to scale the output. Required components are as follows: NodeMCU ESP8266-12E Board; Water Flow Sensor YF-S201 Hall-Effect Water Flow Sensor; OLED Display 0.96 I2C OLED Display 1. S.No. ESP8266 + Gas / Water monitoring. Quite recently got into ESP8266 programming and developed a waterflow meter for my shower which displays flowrate and Thanks to customer Mark, here is wiring diagram of the flow sensor/meter with esp8266, the key point is needing a 555 timer chip as a Schmitt trigger.
You can find esp8266 flow sensor items such as wifi serial transceiver wireless board, wireless module nodemcu, wifi relay module and water flow in AliExpress easily. MENGHUBUNGKAN WATER FLOW SENSOR DENGAN NODEMCU. // based on the number of pulses per second per units of measure (litres/minute in. // convert to millilitres. The HC-SR04 ultrasonic sensor uses sonar to determine the distance to an object. Connect the two pins from the probe to the two pins on the Amplifier circuit via jumper wires. e.g. NodeMCU ESP8266; Water Flow Sensor; Jumper Wires .
Now let us interface YF-S201 Hall-Effect Water Flow Sensor with Nodemcu ESP8266 & OLED Display. PROBLEM. 1. The hardware hookup is extremely easy. There are only three wires that need to be connected. The ground (-) from the NodeMCU goes to the minus c Ultrasonic sensor. The solenoid valve is using water tap open and close. In case of water flow meter which is part of this tutorial. We have a fan in flow meter which rotates when water passes through it. Create stable 3.3v power supply for ESP8266 and ultrasonic module. Interacting with the TUF-2000M from a ESP8266. This worked well until I encountered the following problem. Connections: Make the following connections with NodeMCU- First(Bottom) Sensor- My house plants will be part of the Internet of Things! It will calculate the flow rate and quantity of water and send it to the cloud to monitor the consumption of water. You can configure with other IoT platforms as well. // The Hall-effect sensor is connected to pin 2 which uses interrupt 0. 6. The water flow sensor is integrated with a magnetic hall effect sensor, which generates an electric pulse with every revolution. signal line to arduino digital pin 2. The ESP8266 is used to read the analog signal produced by a soil moisture sensor probe. A0 of FC-28 to A0 of ESP8266. Tracking water usage with an FL-608 water sensor, NodeMCU ESP8266 board and persisting it to an Autonomous DB in the cloud via a Node backend. Ultrasonic sensors are fully maintenance-free. Connection Diagram. IoT Based Water Flow Meter using ESP8266. For the power supply, I take the VIN and 5V pin from the USB converter, but you can also use the 3.3V pin instead because the control board operates also with a voltage of 3.3V. Working Simulation Components Required.
2. 1. Download the Arduino IDE if you have not done so alreadyhttps://www.arduino.cc/en/Main/Software2. Setup the Arduino IDE to recognize the Node and if the water level is full then all three LEDs will glow. This is the sample program to measure water flow rate and the total water flow through the sensor. Measure water level/distance and send it to server. Main Objective. Sample Program. The water flow sensor can detect whether the outside is raining, and the last uv sensor can detect the UV intensity in the current environment. In my case, I connected to GPIO2, i.e D4. GND of FC-28 to GND of ESP8266. Arduino Water Flow Sensor to Measure Flow Rate & Volume: interface YFS201 Hall Effect Water Flow Sensor with Arduino. The TOF10120 Laser Range Sensor Module can be easily powered up using 3 to 5 volts. For this project, you can use either the ESP8266 Thing, or the ESP32 Thing. The wiring between different ESP8266 boards and the rain sensor module is shown in the following pictures.
A water flow sensor is an electronic device that is used to measure water flow rate. IoT Water Flow Meter using ESP8266 & Water Flow Sensor. IoT Water Flow Meter using ESP8266 & Water Flow Sensor. 4. If you got this far you should have created a Ubidots device with a api name of water-sensor. A variable was then created called "h20_heate Download program to ESP8266. $8.99. ESP8266 01.
Components Name Description Quantity. Pretty simple, really. Search: Esp8266 Temperature Sensor. original image. Proximity Sensor LJ18A3-8Z/BX: ESP8266 (ESP32) Black: D6: Orange / Pink: 5V (VIN) Blue: To find the right location you need to open a water tap and let the water flow. The water flow sensor measures the rate of a liquid flowing through it. Breadboard: 1: 3. For the wiring between the capacitive soil moisture sensor and the ESP8266, we can either use the 5V pin of the ESP8266 board or the 3.3V pin of the microcontroller, because the sensor is able to operate with both voltages. The ESP8266 reads the soil sensor value on analog pin A0. As a part of my home automation, I want Kabel merah dihubungkan ke pin 3V3.
Voltage supplied to the ESP8266 is 3.3v.
I have pin D1 and D5 on my Wemos setup as interrupts. The I have a basic code of count the water usage that i copied from esp8266 forum. Hardware required. // litre/minute of flow. Components Required. Water Flow sensor adalah sensor yang mempunyai fungsi sebagai penghitung debit air yang mengalir yang dimana terjadi pergerakan motor yang akan Tuesday, July 26 2022 . DS3231 RTC Module ESP8266 OLED SSD1306 with Temperature Easily I will make a project on DS3231 RTC Module ESP8266 OLED The OLED Display will show Water Flow Rate & Total Volume of Water passed through the pipe. Search: Esp8266 Water Level Sensor. 1: Learn how to use the water sensor with ESP32, how to detect the water leakage, rainfall, tank overflow, how to measure the water level, how to calibrate the water sensor, how water sensor works, how to connect water sensor to ESP32, how to code for water sensor using ESP32, how to program ESP32 step by step. There are many types of water flow rate measurement sensors available in the market such as YF-B1, YF-B2, YF-B3, YF-B4, YF-B5, YF-B6, G1&2, G3&4, G1&8, and YF-S201. But now let us see the IoT Water Flow Meter Circuit Diagram & Connection. Water Flow Sensor is a digital Sensor, so we can connect its output pin to any of the digital pins of ESP8266. In my case, I connected to GPIO2, i.e D4. The sensor works at 5V & can be connected to Vin of ESP8266. $15.99 $ 15. ESP8266 + Gas / Water monitoring. 2018.06.04. DIGITEN G1/2" Water Flow Hall Sensor Switch Flow Meter Flowmeter Counter 1-30L/min. The unit is constructed of long-life polymer and is suitable for So in todays tutorial, we are going to build an IoT based water flow meter using the YFS201 water flow sensor and NodeMCU. IoT Based Water Flow Meter using ESP8266. This flow sensor is suitable for a standard 1/2" BSP pipe and can be easily inserted into a standard piping system. This module is used to measure water level using float sensor, ESP8266 and connecting it to blynk app. Float Sensor 2: 3.
A Funduino type water sensor board. 2. This sensor reads from 2cm to 400cm (0.8inch to 157inch) with an accuracy of 0.3cm (0.1inches), which is good for most hobbyist projects. ESP8266 Modules & Boards ESP32 Modules & Boards Water Flow Rate Sensor 1/8 inch. But the coding only show the output value. Hardware. 2.
Interface after adjustment is as follows: Channels (pins) used in controls are virtual, which transmit data to ESP8266, and then ESP8266 transfers data to watering kit motherboard. A typical use case might be to measure the amount of water that has passed through a reverse osmosis water filter to know when the filter media should be changed. The water flow sensor is integrated with a magnetic hall effect sensor, which generates an electric pulse with every revolution. You can find the flow sensor here. The picture of the YFS201 sensor module alone is shown below. 4.2 out of 5 stars 11. IoT Water Flow Meter using ESP8266. // this case) coming from the sensor. The YF-S401 water flow
Interface YFS201 Hall Effect Water Flow Sensor with NodeMCU Code & (Im using Wemo ESP8266 mini). The Arduino IDE with the NODEMCU enabled (see other Instructables on how to setup the IDE for this board) 4. Its design is in such a way that the hall effect sensor is sealed off from the water, and allows the sensor to stay safe and dry. Today I discovered how amazingly simply it is to do Over The Air (OTA) programming of the ESP8266, thanks to this really cool Random Nerd The sensor fetches the level information and send to NodeMCU ESP8266 which can be monitored through the Arduino IoT Cloud. ESP8266 & Water Flow Sensor. Also the VCC voltage of flow sensor is 5V, and esp8266 is 3v3, a voltage divider is needed in the circuit. Get it as soon as 2018.06.04. It outputs an analog voltage proportional to the resistance between the tracks in the sensing portion.
This is a project for a master degree with the goal of store DIGITEN G1/2" Male Thread Brass Water Flow Sensor, Hall Effect Sensor Switch Flow Meter Flowmeter Counter with Temperature Sensor 1-25L/min. Mengubungkan water flow sensor dengan NodeMCU membutuhan 3 kabel yang berasal dari sensor, yaitu: Kabel kuning (signal/pulse) dihubungkan ke pin D2. Connect the soil moisture sensor FC-28 to the ESP8266 in analog mode. VCC of FC-28 to 3.3V of ESP8266. An ESP8266 module. Power full module by solar panel and LiPo 18650 Battery. In California. Components Required. We give these predefined conditions to the nodemcu. Switch ESP8266 WiFi Bee module to UART port, and plug it into xbee USB Adapter board, then connect to the computer. Controlling a Centurion gate Motor with NodeMCU a 2-channel relay. In this blog, using an ESP8266 and a water flow sensor, we will create an IoT-based water flow meter for this project. 5. When the water reach a specific threshold, the sensor will trig the switch to turn on the ESP8266, which will connect to a wireless network and send a message to a web server. ESP8266 is a wifi module contains System-On-Chip (SOC) with integrated TCP/IP protocol stack that can give any microcontroller access to any WiFi network. Ive been wanting to hook up these pressure and flow sensors that I found on ebay to monitor water usage. The detail instruction, code, wiring diagram, video tutorial, line A light bulb switch using NodeMCU and the Blynk app. 99. Item: Quantity: 1. The hardware will then be integrated with the IoT Server. The current consumption of the TOF10120 is 35mA. Read and display the water flow sensor on Blynk. Place the sensor directly on the sensor. It's not designed to be used connected to a digital pin. You can also see the values generated by the water level sensor on the serial monitor screen. As a part of my home automation, I want to collect data on our Power, Gas and water usage. For the water meter were going to track hourly, daily, monthly and yearly. In the summer. One of the many improvements made on the ESP32 is the capacitive touch circuitry built in to ten of Hook up wires. The main concern of this project is to monitor the level of water through ultrasonic sensor. 3D Printing, AVR/Arduino, Coding, Electronics, Home Automation. Sean. When water flows through the pipe a series of electrical pulses in the form of a square wave is transmitted. Excluded Distance = EX which is the distance I have on top from the sensor which is mounted flowRate =
Code & circuit diagram. Arduino Project Servo Control Using Accelerometer ADXL345 Electronics Simulator Proteus Kabel hitam (ground) dihubungkan ke pin GND. Setting up Proximity Sensor LJ18A3-8Z/BX: ESP8266 (ESP32) Black: D6: Orange / Pink: 5V (VIN) Blue: To find the right location you need to open a water tap and let the water flow. 3. To program the NodeMCU you will need to use the earlier installed Arduino IDE and the Ubidots MQTT library. You will need to load this sketch in With the center point of the fan a magnet is attached Water Flow Sensor is a digital Sensor, so we can connect its output pin to any of the digital pins of ESP8266. Due to this wide range of input voltages, the TOF10120 can be easily used with 5V and 3.3V compatible controller boards like Arduino boards, ESP8266, and ESP32, etc. I used a WeMos Mini or a NodeMCU type board. ESP8266 connect to wifi network & and establish WebSocket connection. Download Free Esp8266 Sensor Embedded Esp8266 Sensor Embedded When people should go to the ebook stores, search start by shop, shelf by shelf, it is in reality Furthermore, the flow rate means the volume of water passes through a sensor per unit of time. Waterproof sensor JSN-SR04T has a detection characteristic of 60, which considerably limits it and prevents its use in narrow wells, as the beam widens with distance and requires a well with a diameter of several meters (6 meters diameter at a well depth of 4.5 meters). It is Very simple to Measure the water or liquid flow by using water flow sensor YF-S201 with Arduino, this Article describes about the water flow sensor and How the water flow sensor works then how to interface water flow sensor with Arduino. The water flow sensor is a Hall Effect type sensor. We also apply the calibrationFactor to scale the output. Required components are as follows: NodeMCU ESP8266-12E Board; Water Flow Sensor YF-S201 Hall-Effect Water Flow Sensor; OLED Display 0.96 I2C OLED Display 1. S.No. ESP8266 + Gas / Water monitoring. Quite recently got into ESP8266 programming and developed a waterflow meter for my shower which displays flowrate and Thanks to customer Mark, here is wiring diagram of the flow sensor/meter with esp8266, the key point is needing a 555 timer chip as a Schmitt trigger. You can find esp8266 flow sensor items such as wifi serial transceiver wireless board, wireless module nodemcu, wifi relay module and water flow in AliExpress easily. MENGHUBUNGKAN WATER FLOW SENSOR DENGAN NODEMCU. // based on the number of pulses per second per units of measure (litres/minute in. // convert to millilitres. The HC-SR04 ultrasonic sensor uses sonar to determine the distance to an object. Connect the two pins from the probe to the two pins on the Amplifier circuit via jumper wires. e.g. NodeMCU ESP8266; Water Flow Sensor; Jumper Wires .
Now let us interface YF-S201 Hall-Effect Water Flow Sensor with Nodemcu ESP8266 & OLED Display. PROBLEM. 1. The hardware hookup is extremely easy. There are only three wires that need to be connected. The ground (-) from the NodeMCU goes to the minus c Ultrasonic sensor. The solenoid valve is using water tap open and close. In case of water flow meter which is part of this tutorial. We have a fan in flow meter which rotates when water passes through it. Create stable 3.3v power supply for ESP8266 and ultrasonic module. Interacting with the TUF-2000M from a ESP8266. This worked well until I encountered the following problem. Connections: Make the following connections with NodeMCU- First(Bottom) Sensor- My house plants will be part of the Internet of Things! It will calculate the flow rate and quantity of water and send it to the cloud to monitor the consumption of water. You can configure with other IoT platforms as well. // The Hall-effect sensor is connected to pin 2 which uses interrupt 0. 6. The water flow sensor is integrated with a magnetic hall effect sensor, which generates an electric pulse with every revolution. signal line to arduino digital pin 2. The ESP8266 is used to read the analog signal produced by a soil moisture sensor probe. A0 of FC-28 to A0 of ESP8266. Tracking water usage with an FL-608 water sensor, NodeMCU ESP8266 board and persisting it to an Autonomous DB in the cloud via a Node backend. Ultrasonic sensors are fully maintenance-free. Connection Diagram. IoT Based Water Flow Meter using ESP8266. For the power supply, I take the VIN and 5V pin from the USB converter, but you can also use the 3.3V pin instead because the control board operates also with a voltage of 3.3V. Working Simulation Components Required.