revolutions - Rickey's World of Microcontrollers & Microprocessors

Forum -> Project Help

I'm using a DS89C450

I need to monitor a +7V input with variable frequency - is it possible to sample the frequency on a 8051 without additional hardware?

I need this to log revolutions of an engine. Output is as said +7V, when the engine is idling output is 26Hz (approx. 750rpm). So basically I need to translate the frequency of the input to a given value. Is it possible?

EDIT: Can I use the externa... Read Compelte post

Other Tags: frequency conversion variable frequency revolutions timer

Posted by TB on Sat Aug 09 2008, 10:44 pm

Post A Question

Share A Project

Downloads

Automatic Railway Gate Control by: Sharanjit Singh in: 8051 Projects
Tue Oct 15 2019, 12:47 pm
Yet Another DTMF Controlled Robot by: Er. Sharanjit Singh in: 8051 Projects
Tue May 07 2019, 02:45 pm
Simple 3 Digit Temperature Meter by: Rakesh Suthar in: PIC Projects
Sat Jul 05 2014, 11:45 am
Electronic Voting machine with Managed Control Unit (Project Report Included) by: Shivani, Geetika Gupta, Vibhore Aggarwal, Megha Singh in: 8051 Projects
Sat May 17 2014, 07:46 pm
LED Scrolling message Display using 8051 by: Pratik Suthar in: 8051 Projects
Thu May 08 2014, 04:28 pm

Comments

Pure Sine Wave Inverter Using Atmel 89S2051 by: liboeEscop

Wed May 31 2023, 09:36 am
Pure Sine Wave Inverter Using Atmel 89S2051 by: Arturocrurl

Fri May 19 2023, 02:23 am
Pure Sine Wave Inverter Using Atmel 89S2051 by: Aldendet

Sat Apr 29 2023, 11:23 am
Simple Digital Countdown Timer using 7-seg Display by: ExperimenterUK

Wed Apr 12 2023, 03:03 am
Simple Digital Countdown Timer using 7-seg Display by: Abiola

Wed Apr 05 2023, 03:07 am

liboeEscop

Wed May 31 2023, 01:12 am

protonshub

Tue May 30 2023, 12:50 pm

Francisspams

Tue May 30 2023, 01:06 am

vtaletvpjz

Mon May 29 2023, 04:54 pm

PeteroCap

Mon May 29 2023, 08:24 am

BenderCashsetly

Sun May 28 2023, 04:56 pm

RobertFar

Sun May 28 2023, 01:07 pm

DustinRar

Sat May 27 2023, 09:39 pm