Ultrasonic water level sensor raspberry pi

Hello every one I have been asked to prepare a code that works on Python to control 8 ultrasonic sensors connected to a Raspberry Pi board. The system shall be connected to a screen via an HDMI and it should show something like a radar monitor.

I shall use only one sensor in this experiment and if you want more sensors to be connected to your Pi, you should take into consideration to provide an external power source of 5 V for the sensors instead of taking the power from the Pi. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. After downloading the operating system, I made a copy on an 8 GB memory card in order to install it on the board and start working.

The video above is really helpful for first time users and helps you during the installation. Otherwise that card shall not operate. First we start with the breadboard and the sensor. Fix the sensor on the breadboard as shown with the resistors and connect to your Pi. You may copy the code in the page to test your sensor.

Ultrasonic Distance Meter Using Raspberry Pi 2

Just open your Python page and copy the code get rid of the words in the top of the page. NOTE that this code is made for a single run. Meaning that the code shall record only one reading and then halt.

Now after the code is working fine with your system, you shall go for the next step that is to have a continuous running measuring. BUT you may need to read the comments as they have some useful tips. The system is fine and the sensor readings are fine. Next step is to convert the readings into shapes with colors. First you have to download a library called matplotlib. Just open your Pi Command Prompt page and write: sudo apt-get install python-matplotlib or follow the instructions in this site.

After installing the library, just test the code in this site. The code I mean is number 15 with a green check next to it. Please note that the code below is my own.

I had to merge the continuous running sensor code with the figure plotting code to get it works as I want. You may change it as you want to suit your demands. Just copy the code to a new Python file and run it.New customer?

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Automatic water level indicator and controller using ultrasonic sensor (HC-SR04)

Break out all of the useful pins from your micro:bit into breadboard format! The BBC microbit is a pocket-sized computer that you can code, customize and control to bring your digital ideas, games and apps to life. Returns Policy. In previous tutorials we've outlined temperature sensingPIR motion controllers and buttons and switchesall of which can plug directly into the Raspberry Pi's GPIO ports.

The HC-SR04 ultrasonic range finder is very simple to use, however the signal it outputs needs to be converted from 5V to 3.

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We'll introduce some Physics along with Electronics in this tutorial in order to explain each step! Sound consists of oscillating waves through a medium such as air with the pitch being determined by the closeness of those waves to each other, defined as the frequency. Ultrasonic sensors are designed to sense object proximity or range using ultrasound reflection, similar to radar, to calculate the time it takes to reflect ultrasound waves between the sensor and a solid object.

You could of course use Acoustic sound for this purpose, but you would have a noisy robot, beeping every few seconds. A basic ultrasonic sensor consists of one or more ultrasonic transmitters basically speakersa receiver, and a control circuit.

The transmitters emit a high frequency ultrasonic sound, which bounce off any nearby solid objects. Some of that ultrasonic noise is reflected and detected by the receiver on the sensor. That return signal is then processed by the control circuit to calculate the time difference between the signal being transmitted and received.In order to measure the water level in my water butt I decided to try a waterproof ultrasonic distance measuring module.

The module provides measurements within a range of 25cm — cm. The transducer itself looks like the device you would find in a car reversing sensor system rather than the twin-transducer arrangement of the classic HR-SR04 module. The output pin is low 0V until the module has taken its distance measurement. So our script needs to measure the time this pin stays high. In order to ensure the Pi only gets hit with 3. This is formed with two resistors. If R1 and R2 are the same then the voltage is split in half.

This would give us 2. If R2 is twice the value of R1 then we get 3. So ideally you want R2 to be between R1 and R1 x 2. In my example circuit I used and ohm resistors. An alternative would be to use 1K and 1K5 values. Here is a diagram of my final circuit. Just remember to update the Python script accordingly.

Ignore the blue resistors as they are not used in this case. To test my module I used the same script as I used in my previous Ultrasonic sensor articles. Although this time I made some improvements.

ultrasonic water level sensor raspberry pi

The calculation that is used to find the distance relies on the speed of sound. This varies with temperature so I updated these scripts to calculate the correct value to use based on a defined temperature. You can change this value if required or perhaps measure it dynamically using a temperature sensor. I like big water butts and I can not lie. The range of the device is 4.

I tested it up to around 2m. Does this system work if submerged obly the sensor for more than half an hour underwater? Matt, I am not an electrical engineer, but I love to create new things.

ultrasonic water level sensor raspberry pi

I was wondering if such a transducer can be used with the PI on my boat to identify objects at night time. For example getting closer and closer to the dock or another boat.

Over a limited range it would probably work. The only way to be sure is to test it.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. This project allows you to monitor your cistern gauge with a Raspberry Pi. You can see the current water gauge, all historical data since using this project, some grouped data and consumption per day. Additionally, you can setup your location to get your local weather data. In general, you only need all equipment from the shopping list and a server running Docker Compose.

If you want to use an external machine as web server, you need to set up a FTP server as well to upload the CSV data file to. Yes, you need some low level prior knowledge regarding Raspberry Pi to get this working. The documentation on raspberrypi. Make sure that no water can get into the case of the Ultrasonic Sensor and the Raspberry Pi. The easiest way is to use an ethernet cable or you can set up Wifi which is more comfortable regarding not to lay an extra cable.

Checkout this repository to your web server. Start your docker container with docker-compose up. I'm far from being an expert and suspect there are many ways to improve — if you have ideas on how to make the things easier to maintain and fasterdon't hesitate to fork and send pull requests!

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This project is released under the MIT License. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.

Sign up. Monitor your cistern gauge with a Raspberry Pi and an Ultrasonic sensor! PHP Branch: master. Find file. Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit Fetching latest commit….By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Raspberry Pi Stack Exchange is a question and answer site for users and developers of hardware and software for Raspberry Pi. It only takes a minute to sign up. I have a swamp cooler that does not turn off automatically when the water level evaporates below the safe level, and if I fail to turn it off even once I could damage it.

The sensor simply needs to know if it is A covered in liquid or B not covered in liquid. I am not interested in how much liquid is left in the swamp cooler. I have heard that people have used sensors with the Arduino to measure the frequency of bubbles by using a sensor to detect liquid.

ultrasonic water level sensor raspberry pi

This project on Fritzing looks cool and very cheap. It requires the construction of a homemade sensor using copper. I was however hoping to purchase a sensor, but I'll default to this option if necessary.

I found this Raspberry Pi water level meter - should answer the question is there water or notbut also a level indicatorlike a measuring cup.

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If you have the room I recommend using an off the shelf Bilge Pump Float Sensor that is designed to trigger a bilge pump in a boat. They are often high quality if it fails, it could sink your boat and cheap walmart.

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They are essentially single pole switches which are closed when the water level is higher than it, and open when the water level is below it. Many of these use magnetic reed switches that never touch the water even when fully submerged. If you need digital signal when specyfic level is reached - you can use simple switch. If you need analog value - use potentiometer. Sign up to join this community.

The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered.

Using a Raspberry Pi distance sensor (ultrasonic sensor HC-SR04)

Asked 5 years, 6 months ago. Active 2 years, 9 months ago. Viewed 28k times. What options are available for the RPi? Matthew Moisen. Matthew Moisen Matthew Moisen 5 5 gold badges 11 11 silver badges 21 21 bronze badges. I wonder if the simple Fritzing solution would change state too late, after damage had been done. Why would it not change state as soon as the water level dropped below the copper pieces?

That rather depends on how you plan to build and fit the sensor. As described it would be on the floor. I thought I could hang it exactly at that line.

ultrasonic water level sensor raspberry pi

You are way over-thinking this Active Oldest Votes. What about something like this? This is simplified drawing to show you idea.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Raspberry Pi Stack Exchange is a question and answer site for users and developers of hardware and software for Raspberry Pi. It only takes a minute to sign up.

I have a swamp cooler that does not turn off automatically when the water level evaporates below the safe level, and if I fail to turn it off even once I could damage it. The sensor simply needs to know if it is A covered in liquid or B not covered in liquid. I am not interested in how much liquid is left in the swamp cooler. I have heard that people have used sensors with the Arduino to measure the frequency of bubbles by using a sensor to detect liquid.

This project on Fritzing looks cool and very cheap. It requires the construction of a homemade sensor using copper. I was however hoping to purchase a sensor, but I'll default to this option if necessary.

I found this Raspberry Pi water level meter - should answer the question is there water or notbut also a level indicatorlike a measuring cup. If you have the room I recommend using an off the shelf Bilge Pump Float Sensor that is designed to trigger a bilge pump in a boat. They are often high quality if it fails, it could sink your boat and cheap walmart.

They are essentially single pole switches which are closed when the water level is higher than it, and open when the water level is below it. Many of these use magnetic reed switches that never touch the water even when fully submerged. If you need digital signal when specyfic level is reached - you can use simple switch. If you need analog value - use potentiometer.

Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 5 years, 6 months ago. Active 2 years, 9 months ago. Viewed 28k times.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Raspberry Pi Stack Exchange is a question and answer site for users and developers of hardware and software for Raspberry Pi.

It only takes a minute to sign up. I am looking for help in determining how to use a Milone E-Tape liquid level sensor with a raspberry pi zero w.

The datasheet for the device is here. It appears a voltage divider circuit will be needed, but how would this work with a Raspberry Pi Zero W? Also, the documentation talks about using the reference resister for temperature compensation - how would this be done?

I use this exact sensor but I use it with an Arduino clone as opposed to the Pi itself but the code that I use might help. You can see additional information here:. Sign up to join this community.

Water Level Monitor using Raspberry PI - Part 3

The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 2 years, 4 months ago. Active 2 years, 2 months ago. Viewed times. Any help would be greatly appreciated! You will need an ADC as the Pis have no analogue inputs. You will probably be better off asking this question on another site as the Pi will be irrelevant to most of the solution. Thank you. I am new to the Pis and only have experience with the Arduino.


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