Fan Speed (RPM) Measurement using IR Sensor and Arduino || Tachometer

detachInterrupt() syntax only works on Arduino SAMD Boards, Uno WiFi Rev2, Due, and 101

It is cool

I need this and rpm counter in one

The schematic indicates the IR sensor is going into digital 2 and your interrupt in the code indicates pin 0 so I don't think that code will work.

Thank's

Sir how can we this code for a flat disk wheel???what modification are needed??

10892 rpm??? Really???

How to I get the library for IR speed sensor?

Make a mini atm or piggy bank fully automatic plzz using aurdino

do you have the same code but not for lcd

rpm = (rev/times)*60000/3 ; how did 60000 ?

nice, can this be used as a trigger switch to activate the brakes for a wind turbine?

nice, can this be used as a trigger switch to activate the brakes for a wind turbine?

Sir, please tell me can I eat relays from speed rpm?

Kindly post a same project with Hall sensor

Why fan is not takeoff on 12000rpm.
😆😆😆😆😆😆😆😆

CODE IS SHIT, shows random numbers

itu ndak salah baca ya? khawatirnya kalau baling2nya kipas ada 3, sensor baca rpmnya 3x lbh banyak

thanks! Is it possible to calculate fan cycles instead of speed in this example using Arduino

how to get the input voltage?

would this be able to be supplied from a 9v battery or 12/24v supply aswell?

Hi. How would this be done without using microcontrollers?

You should not use detachInterrupt(), but instead use noInterrupts() and interrupts() to disable/enable interrupts

bro i just want to count the totol number of revolution not RPM, what changes should i make?

How to fix alarm if the rpm is zero

how to display it in serial monitor?
i change the code to display it in serial monitor, but it does not work.


CODE:
//to display on serial monitor code:


float value = 0;
float rev = 0;
int rpm;
int oldtime = 0;
int time;


void isr() //interrupt service routine
{
rev++;
}

void setup()
{
Serial.begin("Initializing");
attachInterrupt(0,isr,RISING); //attaching the interrupt
}

void loop()
{
delay(1000);
detachInterrupt(0); //detaches the interrupt
time = millis() - oldtime; //finds the time
rpm = (rev/time) * 60000 * 3; //calculates rpm for blades
oldtime = millis(); //saves the current time
rev = 0;
Serial.println("TACHOMETER");
Serial.print( rpm);
Serial.print(" RPM");
Serial.print(" ");
attachInterrupt(0,isr,RISING);
}

thanks , but i think you have error in your code which is
rpm = (rev/times)*60000/3 ;
it should be :
rpm = (rev/(times/3))*60000 ;

Sir how to made airgun pellet speed chronograph plz make one video

Can this sensor use in NodeMcu?

hello sir ... im follow your instruction .... but my lcd doesnt write anything .... its appear something but in square pixel ... n make me confusing... pls help me sir...

great !!!

Seems like a nice project, but there is no way that fan is running at 12,000rpm. At that speed it would take off like a helicopter :)

Please make a incubater

Good project bro

Nice project 👍

Good job sir