October 7, 2020

Simple but accurate digital tachometer using microcontroller Has a resolution of 1 rev/sec. The tachometer use an optical pickup scheme for picking . Today, we are going to make a digital tachometer based on a PIC This tachometer can measure speeds up to RPM with the resolution . Sir, I want the code for the Contactless Digital Tachometer using PIC16FA. Abstract: This paper proposes a hardware design of an. “Digital Contact-less Tachometer” based on IR sensor for measuring the Revolutions Per Minute (RPM ).

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Contactless digital tachometer using Ditital you for all. Any special interface cable? Can you feed me thw same circuit with high sensitivity. This is for my study and teaching the program how to srite Thanks a lot for the Originators.

Embedded Lab

But this distance varies according to the climatic conditions in the region and also other devices operating in the area. What is the use of burner circuit of microcontroller in this device? Next part is the signal conditioning unit based on the opamp LM IC1.

Military uses high grade IR sensors that are able to operate for distances of few 10Km to Km. Voltmeter using Transistor intercom circuit. Only one opamp inside the quad LM is used here and it is wired as a comparator with reference voltage set conractless 3.


I have a problem in the optical pick up assembly. The job of digotal comparator unit is to convert the spiky collector wave form into a neat square pulse train so that it can be applied to the microcontroller. Also, there is a change in the sensor circuit. You can use any single supply opamp that matches our supply voltage 5V.

Digital tachometer using admin April 20, 39 Comments. I used LM just because that was the only single taachometer opamp with me at the time. Dear Sir, Kindly provide C code for better understanding. Timer 1 is configured as an 8 bit auto reload counter for registering the number of incoming zero going pulses and Timer0 is configured as a 16 bit timer which generate the necessary 1 second time span for the Timer1 to count.

You an use Keil to code, compile and test the program code. This is done just because to save my time but not a text book method. Dual supply opamps configured in single supply mode will not give results like a dedicated single supply opamp in the same situation. We are working on digitzl layout part! The output is given in rpm revolutions per minute and the number of digits are increased from 3 to 5.


You may also like: When viewed through an oscilloscope the collector waveform of the photo transistor Q4 2N would look like this:.

Contactless digital tachometer using 3 digit display and measures upto rev/sec

The circuit diagram of the digital tachometer is shown below. Leave a Reply Cancel reply Your email address will not be published. LCD tachometertachometer using Heart rate monitor with sms alert. The circuit diagram of the LCD tachometer using is given below.

The module is connected to the PC through serial port. The working principle is almost similar to that of the previous version but the program is heavily modified. C remotes use IR sensors to operate.

You have to test and calibrate your sensors based on application. Will be updated on this page. Go through this article Delay using timer for a better grasp. Can you Provide an lcd version of it please!

Can this circuit be purchased on this site?