Pressure Sensor - Arduino
ฝัง
- เผยแพร่เมื่อ 5 เม.ย. 2020
- Today I walk through how to hook up an industrial pressure transducer sensor and interface it with an Arduino micro-controller. I take the incoming analog voltage value, convert it and display it to the serial monitor as well as onto an LCD screen. Code below. If you have any questions please comment below or e-mail me below.
Stay tuned for more videos!
Tyler,
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Code Start */
/* This example demonstrates how to take a standard 3-wire pressure transducer
* and read the analog signal, then convert the signal to a readable output and
* display it onto an LCD screen.
*
* Contact Tyler at tylerovens@me.com if you have any questions
*/
#include "Wire.h" //allows communication over i2c devices
#include "LiquidCrystal_I2C.h" //allows interfacing with LCD screens
const int pressureInput = A0; //select the analog input pin for the pressure transducer
const int pressureZero = 102.4; //analog reading of pressure transducer at 0psi
const int pressureMax = 921.6; //analog reading of pressure transducer at 100psi
const int pressuretransducermaxPSI = 100; //psi value of transducer being used
const int baudRate = 9600; //constant integer to set the baud rate for serial monitor
const int sensorreadDelay = 250; //constant integer to set the sensor read delay in milliseconds
float pressureValue = 0; //variable to store the value coming from the pressure transducer
LiquidCrystal_I2C lcd(0x3f, 20, 4); //sets the LCD I2C communication address; format(address, columns, rows)
void setup() //setup routine, runs once when system turned on or reset
{
Serial.begin(baudRate); //initializes serial communication at set baud rate bits per second
lcd.begin(); //initializes the LCD screen
}
void loop() //loop routine runs over and over again forever
{
pressureValue = analogRead(pressureInput); //reads value from input pin and assigns to variable
pressureValue = ((pressureValue-pressureZero)*pressuretransducermaxPSI)/(pressureMax-pressureZero); //conversion equation to convert analog reading to psi
Serial.print(pressureValue, 1); //prints value from previous line to serial
Serial.println("psi"); //prints label to serial
lcd.setCursor(0,0); //sets cursor to column 0, row 0
lcd.print("Pressure:"); //prints label
lcd.print(pressureValue, 1); //prints pressure value to lcd screen, 1 digit on float
lcd.print("psi"); //prints label after value
lcd.print(" "); //to clear the display after large values or negatives
delay(sensorreadDelay); //delay in milliseconds between read values
}
*/ Code End - แนวปฏิบัติและการใช้ชีวิต
At 10:57, the number is not a decimal because the analog input values only return whole integers, my mistake.
can you share the new code ?
@@siraitkreatifchanel Code doesn't change
@@OvensGarage Great video! This helped me a ton. I'm not sure I'm understanding the 10:57 comment though. I think I understand the integer vs decimal part, but why is it reading 102psi instead of 0psi? Was this filmed before you added the "pressureValue = ((pressureValue-pressureZero)*pressuretransducermaxPSI)/(pressureMax-pressureZero); //conversion equation to convert analog reading to psi" line?
Again, fantastic and very helpful video! I'm just trying to educate myself.
please friend !!!
help me with this code !!
I need to print on the TM 1637 display !!!
I can't help showing it!
please, can you help me ?
@@jondonlon1407 Actually if you read the code you can see that the 102 is not a PSI value, it is the value between 0 - 1024 converted by the Arduino (equivalent to 0-5V). That is printed because he has put the real PSI value in comment (the code line below the reading() line). If he uncomments that line of program you will see 0 PSI as value. So 102 is equivalent to 0 psi witch is the good value.
Clear and straight to the point. Congratulations!
amazing vidoe man! I'm setting up an oil pressure guage in my car using an I2c display and this helped out a ton. I love that you go line by line explaining what each line of code does and you explain the math to back it up!
Glad it helped!
Dude! This is by far the best video of pressure sensor I can find. Great job of explaining your code. Most videos just talk about the hardware yet forget about coding. I plan on using this video to setup pressure sensors for an air ride system.
Glad it helped! I try to setup these vids so it's easy to understand for someone who has never done it before...I'm not an expert either! We are all learning together.
Thanks for this instructional video. I thought it was well done and well reasoned. I pasted your code into my large sketch, made a minor change, eliminated the LCD, and it ran fine.
can you teach me for my final year project. i really need your coding without LCD, hope you can help me
Thanks for the video!! worked great. now trying to figure out how to do multiple.
I've spent the last few months on and off working on a project with a pressure sensor and I could not get it to work for the life of me (I could solve it instantly by paying twice the price of a component to have it shipped from america). This video has basically saved me because it's exactly what I want to achieve and can be found much easier.
You my friend are a saint. Been looking all over for this.
Cheers
6:30; Thanks for the explainer of where the 0.5vdc came from!
Cheers, thanks for watching!
Great video & description. Was planning to use this type of sensor & a traditional gauge setup on my Jag but this approach is far more sophisticated. I also want to monitor battery voltage so your last comments are a big plus! FYI Oil pressure & battery voltage are big issues on modern Jags but JLR don't install these driver aids these days. Many folk on the Jag forums will be interested in your project, good luck & I'll watch out for updates. Many thanks Dave in the Wirral, UK . Subscribed!
Thanks for the comment appreciate it!
Fantastic man! I'm doing an air ride set up and wanted to flush my own screen in the dash. This is a great tutorial
That's great, this should work perfect for your application. Glad I could help!
Thank you, your video helped me a lot during my final year project
Glad I could help!
this guy deserves a medal
Top video and description, it's pleasure to subscribe. Look forward to more like this.
Thank you very much!
Hi and thanks for this video, it helped get me on the right track for adding a fuel pressure sensor to my truck. I'm new to Arduino and writing code but I made a few changes in the calculations that seemed a bit easier (for me anyways). Here it is in case it'll help you or anyone else along the way when you start adding different sensors. I'm also going to add a pyrometer and a boost gauge and run them all (or try to anyway) off one arduino.
Things I changed;
-My display was different so I switched to LiquidCrystal
-I didn't use the pressurezero, pressuremax, or max psi
-I determined the linear rate of 5.45 for a 150psi sensor but since Arduino doesn't use decimals, I made it 545 and then divided by 100 later
-In the pressure value, I subtracted 102 since .5v = 0 psi and 102 is the analog equivalent of .5v
#include
const int pressureInput = A1; //select the analog input pin for the pressure transducer
//const int pressureZero = 102.4; //analog reading of pressure transducer at 0psi
//const int pressureMax = 921.6; //analog reading of pressure transducer at 100psi
//const int pressuretransducermaxPSI = 150; //psi value of transducer being used
const int baudRate = 9600; //constant integer to set the baud rate for serial monitor
const int sensorreadDelay = 250; //constant integer to set the sensor read delay in milliseconds
const int linear = 545;
float pressureValue = 3; //variable to store the value coming from the pressure transducer
LiquidCrystal lcd(12,11,5,4,3,2); //sets the LCD I2C communication address; format(address, columns, rows)
void setup() //setup routine, runs once when system turned on or reset
{
Serial.begin(baudRate); //initializes serial communication at set baud rate bits per second
lcd.begin(16,2); //initializes the LCD screen
}
void loop() //loop routine runs over and over again forever
{
pressureValue = analogRead(pressureInput); //reads value from input pin and assigns to variable
pressureValue = (((pressureValue-102)/linear)*100); //This seemed simpler to for me
Serial.print(pressureValue, 1); //prints value from previous line to serial
Serial.println("psi"); //prints label to serial
lcd.setCursor(0,0); //sets cursor to column 0, row 0
lcd.print("Pressure:"); //prints label
lcd.print(pressureValue, 0); //prints pressure value to lcd screen, 0 digit on float so that it would all fit on the screen
lcd.print(" psi"); //prints label after value
lcd.print(" "); //to clear the display after large values or negatives
delay(sensorreadDelay); //delay in milliseconds between read values
}
hello friend for a 200 psi sensor that needs to be configured
Thank you for this project! I'm starting at arduino language and it was easy for me to follow your explanation. I'm trying to make a water level indicator for my VW camper bus using this pressure level. I need to transform the analog reading values into percentage and liters so i can know how much water do i have left, i think with this code i can make it happen. :D
I find the video very instructive, especially the time you take to explain each instruction in detail.
My question is if you have done tests with negative pressure, that is, with depression, I would like to build a vacuum gauge and it seems to me that it could work.
I have not done the test with an applied vacuum. I'm unsure if the sensors are designed to work that way. I would check the sensor manufacturer specs.
Excellent commentary and tutorial. Thank you.
Thanks
Awesome brother, really cool project. Been wanting to delve into the Arudino world for quite some time. Thanks for the inspiration!
Thanks, I'll be trying to make these electronic videos easy to understand and follow so anyone can replicate them if they want. Cheers.
@@OvensGarage Looking forward to the next vids. I take to this fairly quickly as I used to be a programmer for a living. All the best!
@@JonHeaven Maybe you will be able to teach me more than I know then haha, this is just a hobby for me so I am learning as a I go.
Im working on a N2 generator, and I need to be able to monitor the pressure and flow rate, so this is going to help a lot. Thanks!
Glad it helped. Cheers
Hola. Muy buena la programación. La probé y excelente. Lo único que agregaría es que para transductores de 12 Mpa, como mi caso, el delay a usar debe ser de 1000 sino se torna bastante impreciso. Muchas gracias.
Great video, thanks.
Anything on absolute pressure sensor?
I’m interested in reading vacuum.
Dude this is awesome! Great video
No problem glad it helped.
excelente gracias!!! from Mendoza Argentina!
Thanks man great video. I have a home heated by oil tank and I'm thinking it'd be a good first project to put an analog sensor to measure tank level. So it can alert me when the tank gets low, and I can check it remotely. As of now I have to walk over and it's in the back of my garage. But also thought if I log the data I can measure oil usage over periods of time. I have a Rasp PI 4 & Arduino UNO, going to buy that sensor you used and probably use the Pi so I can take the data and move it via Wifi somewhere I can access it remotely.
This a great example, just a side not to your code, you could use the map() function to convert those voltage/input ranges as well. Keep up the great videos
Thanks for watching and thanks for the tip!
Thanks for sharing, I'll be interested in this project as I'm doing a similar one.
Good luck!
Heya! Great video. Thanks! I am adapting your model for a pressure / depth sensor on my underwater ROV.
Perfect!
Great video. Which lines would I change using a 200psi sensor? Would I only change the maximum?
Great Video!! Thank you. I have a project where I want to send 5V until a given pressure is reached. The pressure would start out high then when the lower pressure is reached shut off the 5V output. Being new to programming would that be difficult to add to your code?
Great Video!
Thank you so much, it worked!
3:51 1.5 psi is 77.5mmHg, so your measurement is probably right. It is normal that the "vacuum" is a much larger number because you only have to remove the air. There's a lot of atmospheric pressure outside to push against, so you can "suck" a lot harder than "blow". Nice presentation, btw!
I wonder if you could do this with multiple transducer sensors. I may use this for monitoring my well water, thankyou
Very clear sir, thanks, I appreciated it..
Glad it helped
excellent tutorial, thank you very much.
Good good really
Glad it helped! Thanks for watching.
Hi thank you for this great video
Can you display the pressure value on a phone rather than than an LCD screen? What changes need to be done on the code?
Well explained, thank you! I am currently working with a 5000PSI pressure transducer (Output voltage 0.5V-4.5V) and the Arduino nano. Can I use this code changing the constants? and, what do I have to change or add to the circuit?
Thank you. Looking for more project..
I have 4 of these exact transducers. When reading the unaltered analog value on the serial monitor, I get 87 for one of them and 102 for the others. Does this just indicate that that specific transducer is running at less than 0.5 V? When I calculate the low voltage from those numbers I get 0.42V which does seem reasonable. Am I missing something or do I just need to calibrate each program to the specific transducer it's using if it's not 102.6?
where have you disappeared to ...Yo are by miles the best at teaching how to use not just Arduino but all these sensors.. I hated to use Arduino until I saw your videos
Hi Ovens, do you reckon I can use this to measure the water pressure in a borehole?
Good work man thanks
Hi awsome video ... Do you think this sensor would be sensitive enough to detect air flow in ducting .. We have a fan that extracts from an industrial laser ... I need to work a way to detect which way the air flow is going left or right from a bypass system .. Was hoping if this is sensitive enough I could fit one on each side .. And control indicator light to show the air flow direction .. Hope that makes sense ! .thank you
Paul
I'm using this sensor, but be aware! Sensorvalue is also changing with temperature!
If you adjust that blue potentiometer on your lcd piggy back you will be able to see the writing on the screen as it alters the contrast
Great video, much appreciated
Glad it was helpful!
cool project. Going to make a smart water tank for my home.
Good luck!
This is really a thorough video. Thank you very much. I would like to use this to control air pressure coming from a compressor, but I don't konw where to find prorammable air compressors, do you have an idea of any commercial model that I could connect to the arduino?
hey, I too want to do the same. Got stuck with the same question u asked here. whether you got it..? or u have any alternative..?
Hi bro i have one question......if you have to your own mcu board then what will be interfacing circuit will be of analog pin.... de we need a resistor divider ckt with skotky diode with that?
Great video. Thank you sir!
Hi, can you tell me which Liquidcrystal_i2c library you are using please as I am getting errors on compiling Thank you
Hi i still new on arduino. Is it okay if i use esp32 to connect with transducer pressure? Is support 3.3v?
Hi im very new to coding and arduino I was wondering what Lcd library you used.... i dont have a display on my lcd screen
Hello Mr if you can adding the temperature reading in LCD in same pressure sensor you can
Thank you so much
Hi, I got a question, I want to use it for measureing into a water container (1000 lt), the sensor could be in touch with the water,? my idea is at the bottom of the container in pipe line put it, thanks in advanced!!!!
So how do you think to measure negatif pressure if you wanna use this transducer in vacum chamber?
Is this applicable to pressurized water tank to replace the conventional water pressure switch?
do these things work for measuring sub pressure tanks
If i want to turn a relay on or off at a certain pressure, would i add that code under yours?
Good Nigth friend, video show. I would like to know which source do you use in the Arduino IDE?
thanks for your nice job!!!
Thank you too!
Good afternoon, excellent video, I have problems with the library that type of library I use, the one I have of "LiquidCrystal_I2C" throws me an error in "lcd.begin"
what series of air pressure sensor do you use HK1100C? Or other
Have you had any experience with I2C pressure sensors and making them work for an arduino? I am working on a project using an ABPDANN005PG2A3
sensor by honeywell for reading a blood pressure cuff. I am stuck on how to get the sensor to read on my arduino mega and uno (Not at the same time). Do you have any tips or places besides the arduino forums to look?
I have not used this type of sensor.
This code worked, thanks!.
Getting 2 white bars on lcd, how did you do it?
You're welcome!
Resolved by replacing the lcd library and address
Excelente, good job!
Thanks a lot!
would this work for a vacuum sensor? any way you can help with a sensitive diy vacuum sensor that works down to the 1 mTorr level? they cost hundreds of dollars currently
If the sensor supply voltage is 12v not 5v and its output voltage is 0-5 volt ..will this affect the reading on the ADC pin?
Very detailed! Subscribing for more content👍🏻
Thanks for the sub!
I have a 300 psi sensor which has the same 0.5v is zero - 300psi 5v. When I put in the code, I changed the max psi to 300 but when I run the serial monitor and have it hooked it, it shows on average -1.5psi. Is this correct or should it say 0.0psi?
Obrigado pelo video! Me ajudou muito!
Great stuff, thanks a lot. Subscribed:-)
Thanks!
Hi Ovens, How many pressure sensors can we can connect with this Adruino board ? in case I want to install 6 sensors on 1 board, How can I extend input port ?
Do you have example towing sensor?
is it the same for a strain gauge ?
Hello, I am using a 300 psi pressure transducer. I used your code I am just confused what number to use for the analog signal. You the the number 1024 what will be the number I use. Or better question how do I determine that number?
Can we interface CTX323B200 pressure transducer with arduino?
Great video thx!
You bet!
Sir did you have coding for 150psi sensor ?
It's useful for water bubble panel?
I have a 200 PSI sensor wich value do i need to change.
hi, this transducer work with nodemcu esp8266?
What materials do you use?
Great video! It was working fine with me till I messed up, I plugged my sensor output accidentally to the 5v of the Arduino while it was already in supply externally by a 5v power supply. Now i'm not getting any reading, do you think I jammed my sensor?
I think you should be fine, try re-wiring and then re-setting the arduino and it should work.
Hi bro is there a way to filter the noise at STP
Thanks for sharing, is there any similar code for use with oled display? please excuse my ignore.. new one to this kind of programming..
You can likely find example code with some OLED libraries in the IDE software.
i skipped the lcd and read the value in the serial monitor, but with the exact same code my sensor (100psi) shows -2.2psi. does that mean it is broken?
I'm new to all this and was wondering if I could use a Pressure Transmitter instead and is there limits on the max pressure? Does it matter within the code itself?
Hi, I'm unsure what a pressure transmitter means that you are talking about. You can purchase these types of sensors from amazon in various pressure limits and very simple to adjust this code to them.
Mine is 60psi. I change pressuretranducermaxPSI to 60 but at my serial monitor the prints without pressure are from -0.5 psi to 0.7 psi. Something going wrong with the sensor or some
thing else?
If I wanted to run two of that same sensor for oil and fuel pressure would I just duplicate the code underneath and change the input to A1? And to display the second reading under the oil pressure just change the colum row to (1,0)?
Yes that would likely work!
Hello, thank you for your video.
I've got a small question.
If my sensor works with a 0-10V signal, can I use a voltage divider for the same code?
thank you
I believe so yes
Thank you sir
Glad it helped!
can i use above pressure transducer to the verical pipe having flammable fluid such as oil,petro or diesel etc.
Probably, depending on the temperatures though it might alter your readings. You could have a long tube of some sort with some adaptors to still read the pressure at a distance to keep the temps away from the sensor.
Hi there! can anyone help me please, what if I got a 174 psi (1.2 MPa) pressure tranducer ?? what should I change? I'm sorry, I'm not figuring out how to change that code for suitable with my pressure tranducer :(
Thank you!!!!!
You're welcome!
Awesome video. I'm having one issue, when I use your equation and some portions of your code, for some reason my sensor readings flip to negative at 40PSI and as I increase the pressure, the negative starts dropping back to 0. Its a weird one I can't figure out.
The variables that are part of the equation are declared as INT while The result the code is expexting is float. This will cause the system to put a negative sign in about 32 psi... The solution is simple: declare all variables that are part of the pressure equation as float and also define them as float (include a '.0' after the integer part). This should solve your issue
Hi there.
i have the same sensor, the same lcd and a Arduino Uno. i have copied your code and im not getting the same display. Is this line of code written as is or do you have to add numbers? "pressureValue = ((pressureValue-pressureZero)*pressuretransducermaxPSI)/(pressureMax-pressureZero);
Thank you for taking the time to upload a great video.
How can I convert it into Pascal and the initial value suppose to be is zero?
What should do if unit in bar.