Designing tachometer using IR led with 8051

[niranjan23]

Hello....

I want to make project on tachometer using IR leds with AT89S51.

I want to know how to program time/counter to take measurement in RPM and how do I display on 16x2 LCD

and how to convert pulses in RPM...what is the formula for it???

I m programming microcontroller in Assembly

 

[uday mehta]

which device rpm you want to measure? a fan or a motor or anything else?

 

[tpetar]

Hello....

I want to make project on tachometer using IR leds with AT89S51.

I want to know how to program time/counter to take measurement in RPM and how do I display on 16x2 LCD

and how to convert pulses in RPM...what is the formula for it???

I m programming microcontroller in Assembly

99 000 RPM Contact-Less Digital Tachometer
**broken link removed**


Other useful links for contact-less tacho:

How to make a contact-less digital tachometer using IR-light reflection technique
https://embedded-lab.com/blog/?p=2425

Digital tachometer using 8051
https://www.circuitstoday.com/digital-tachometer-using-8051






Best regards,
Peter