Introduction: How to Make Arduino Based Digital Tachometer Simple DIY Tutorial

Let see how to make Arduino based digital Tachometer.

Working principle :-

IR Sensor get penetrate by motion of motor shaft, signal are transfer from IR Senor module to Arduino.

This signal are processed in Arduino according to code loaded on it.

Then Arduino transfer signals to LCD Screen to display RPM

https://easyeda.com/sharmaz747/Arduino_techometer-...

Step 1: Video

Step 2: Material Reuired

1) IR Sensor module :- http://amzn.to/2mOUVyw

2) LCD Screen :- http://amzn.to/2lxF1bp

3) Arduino Nano :- http://amzn.to/2lxF1bp

4) Zero PCB :- http://amzn.to/2lxF1bp

5) Header pins :- http://amzn.to/2lxF1bp

6) 9V Batter

Step 3: Electrical Circuit

Kindly go through the attached circuit diagram.

https://easyeda.com/sharmaz747/Arduino_techometer-...

IR Sensor Arduino

VCC----------------5V

GND----------------GND

OUT-----------------2(digital pin no. 2)


16X2 LCD Arduino

VSS------------------ GND

VCC----------------- +5V

VEE------------------ POT

RS-------------------- 12

R/W----------------- GND

E--------------------- 11

DB0----------------

DB1----------------

DB2----------------

DB3----------------

DB4------------------ 6

DB5------------------ 5

DB6------------------ 4

DB7---------------- 3

LED+--------------- +5V

LED----------------- GND


Visit https://easyeda.com/

to design & buy your custom make PCB





Step 4: Procedure

Bring a Zero PCB, Mount female header pin on PCB

Place arduino and LCD Screen on PCB

Make solder connection where it is required,

refer electrical drawing for better understanding.

place IR Senor module on PCB in way that its sensor face toward the

wheel of motor to whom RPM have to measure.

Connect the Arduino with PC to upload code.

Then connect the 9V battery to power up arduino & LCD 16 X 2 screen

you can adjust the brightness of screen by rotating that Knob connected at VEE of LCD Screen

Now you are ready to take RPM reading.

Manually rotate the Wheel of motor you can see RPM Reading are appear on screen

feel free to comment below

Thank for your attention hope you like this project

Step 5: Arduino Code

Click here to download Arduino code

upload the code to Arduino

Be sure you have selected right Board & port to successfully upload the code

Comments

author
man_thas_cool (author)2017-08-07

Quick question: Does the Arduino keep track of the time that it runs? You don't have to start some special 'clock' operation?

I can't believe how concise this code is compared to other tachometer tutorials I've seen. Nice tutorial!

author
ArcAiN6 (author)2017-07-13

the arduino code download link goes to a Google page that says it violates terms of service for URL shortener..

Perhaps just past the code in "code" brackets, then no one has to download anything from nefarious places.

author
Mr innovative (author)ArcAiN62017-07-13

it is fix,

http://www.mediafire.com/file/qb57bnuww0us465/tachometer-using-arduino.ino

author
garyparks1949 (author)2017-03-30

while I have downloaded the project, I haven't had the opportunity to use it as yet. Tried to read through the project and had a difficult time understanding what the person was trying to convey. Not a very explanation of how to build it, however, being a retired engineer being able to build directly from schematics and upload code to the nano makes things quite easy for me, but I think not for a beginner in the business.

author

I'll try to make my explanation more efficient in upcoming projects thanks for your inputs

author
baba1234 (author)Mr innovative2017-06-16

hi sir can u plz forwad me the code cause the previous link to the code doesnt work thanks

author

Thank you for your reply. I was not trying to be mean when I commented, But as a retired Electronics Engineer I have had to write Instruction Manuals and Build Manuals. I have found that the "KISS) method is the best way to approach. (KISS Keep It Simple Stupid!). That way even the least trained person with a minimum of experience can usually build from a manual. Again though thank you for the reply. BTW, I'm 68 years young and still myself busy with electronic projects here at home. You don't use it, you lose it!

author

yes its my honor to have advice from people like you who have a huge experience in your field, this will add more value to my work & KISS is best way to present your ideas, keep motivate us thanks

author
baba1234 (author)garyparks19492017-06-16

hi sir can u plz forwad me the code cause the previous link to the code doesnt work thanks

author
RomiT1 (author)2017-05-22

hello sir,

i want to ask you, how to change rpm output to m/s output?

could you help me to resolve in arduino sketch?. thank you

author
fourstar (author)2017-04-05

Hello Sir,

Will this work to measure the RPM for my RC gas engine propeller

or have you now an other tutorial to measure the rpm of a rc plane

Thanks

fourstar

author
w00dman62 (author)2017-03-16

If you download the pdf there is no code link. Bummer

author
HarunÖ4 (author)SeanM1242017-03-28

thank you bro.Have a nice day

author
SeanM124 (author)HarunÖ42017-03-29

you too

author
w00dman62 (author)SeanM1242017-03-16

Thanks much. I think this is a great project and want to build one!

author
sasi07 (author)2017-03-18

Can arduino uno be used

author
Mr innovative (author)sasi072017-03-18

yes

author
Ralphxyz (author)2017-03-16

Your interrupt does not look very efficient, I thought one wants to be in and out of an interrupt as fast as possible, you even have a delay in it. Of course as you are only doing one thing it probable does not matter. I would be doing more things.

author
MichaelW623 (author)Ralphxyz2017-03-17

I may be wrong, but it appears that the interrupt is only increasing a counter. The loop turns off the interrupt while it is doing the calculation and lcd.print operation. I see this as a problem as without the interrupt running, it cannot count. The lcd.print operation takes quite a long time from what I have seen, but again, I may be wrong.

author
Ralphxyz (author)MichaelW6232017-03-17

the thing is that all that should be done within the interrupt is the counter is increased period. Nothing else. If you need a delay do it outside of the interrupt.

author
MichaelW623 (author)Ralphxyz2017-03-17

It appeared to me that that was all that was being done, but again, I am new at coding. The delay is in the loop, outside of the interrupt. The only thing being done in the interrupt is:

rev++;

author
PaulG302 (author)2017-03-14

Hi, I do not have an LCD display, you can write code to monitor serial?

Thank you!

author
Mr innovative (author)PaulG3022017-03-16

yes it is possible you can get RPM reading directly on serial monitor , even if you can attache a Bluetooth module one can get RPM reading directly on mobile i will try this and post it soon

author
WannaDuino (author)2017-03-16

have to say i like this,

can this be used in the rc world to check the motors or proppelors?

WannaDuino!!!

author
PierluigiF1 (author)2017-03-16

The code link is not working anymore.....

author
CharlieM92 (author)PierluigiF12017-03-16

I found it in the comments of the video: http://www.mediafire.com/file/qb57bnuww0us465/tach...

author
tk42967 (author)2017-03-16

This would be awesome to package into an old flashlight housing.

author
spatial guy (author)2017-03-16

Genius!! - exactly what I need right now. Can't thank you enough. Cheers

author
sanjaykray (author)2017-03-10

btw TFS .

author
Mr innovative (author)sanjaykray2017-03-10

thanks

author
sanjaykray (author)2017-03-10

fantastic project, I'm thinking of using it with my CNC spindle to get the exact rpm reading

author
Tominaz (author)2017-03-09

neat project. I really like your use of the nano. most are using the larger boards. using I2l is really neat expect to see many projects that talk to the several different functions.
good job thanks

author
Mr innovative (author)Tominaz2017-03-10

thank you very much to acknowledge our work.

author
degrooty (author)2017-03-07

Enter this in the "Build a Tool" contest!! It is perfect!

author
Mr innovative (author)degrooty2017-03-07

i applied, thanks

About This Instructable

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Bio: Electrical engineer by profession
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