tachometer

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donrigor

Joined: 26 Feb 2009
Posts: 19

27 Feb 2009 3:26 microcontroller based tachometer

I'm planning to build a digital tachometer using IR sensor and counters that can be displayed on 4-seven segment display that counts from 0-9999. Does anybody has an idea on how to make the counter count for every 3 sensed IR.?

Fragrance

Joined: 26 Jul 2002
Posts: 1385
Helped: 24

27 Feb 2009 6:40 tachometer project

hi

always used search function here any way here you go

http://homepages.paradise.net.nz/bhabbott/tacho/tach.gif

http://homepages.paradise.net.nz/bhabbott/tacho/tacho.asm

http://homepages.paradise.net.nz/bhabbott/tacho/lcd_v_a1.asm

regards
Fragrance

pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

27 Feb 2009 7:08 tutorial tachometer

Find here a ready made project kit with the same specifications you need....www.united77.com/projects.htm

Microcontroller based Tacho meter.
This is an easy-to-make photoelectric based tachometer project for measuring the RPM (revolution per minute) of rotating shaft, shop-floor tools and many household machines without any mechanical or electrical interface. The circuit employs AT89C2051 microcontroller as the main controller. Some of the major components used in the circuit are CA3140 operational amplifier, ULN2003 current buffer and KLQ564 4-digit, 7-segment display

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27 Feb 2009 7:08 Ads

donrigor

Joined: 26 Feb 2009
Posts: 19

27 Feb 2009 11:43 building own tacho

Thanks a lot for the idea sir! But i don't know anything about microcontroller. I'm planning to use logic gates. Is there any circuit about logic gates online?

pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

27 Feb 2009 12:44 7 segment tachometer

You are most welcome donrigor. The kit mentioned in my last post will come with a pre-programmed microcontroller. You'll not have to worry about writing the codes. Just use the micro as you use an IC and get the project working. They also provide assembled and tested projects. Enquire them about your needs. Goodluck.

GrandAlf

Joined: 09 Mar 2002
Posts: 409
Helped: 23

27 Feb 2009 15:22 micro controller based tachometer

That's certainly how it used to be done. Possibly it may take less effort to learn uC programming than do it all with discreet logic. Just a thought!

donrigor

Joined: 26 Feb 2009
Posts: 19

28 Feb 2009 3:53 tachometer ccs

OK. maybe i'll try to learn uC, but is there are any books online that i can use or any tutorial? can i learn uC in two weeks?

GrandAlf

Joined: 09 Mar 2002
Posts: 409
Helped: 23

28 Feb 2009 21:14 tachometer microcontroller

Something like Proteus would be ideal for you. You could simulate virtual uCs displays etc without constucting any hardware. Problem is this facility is not available on the free version. Maybe someone can suggest an alternative. If there is, you could write code in Basic, C etc, and load the generated code into the simulator to test. Good way to learn.

GrandAlf

Joined: 09 Mar 2002
Posts: 409
Helped: 23

01 Mar 2009 9:24 how to make a tachometer

Google for "Proteus VSM". Seems to be a trial available. Current version is around 7.xx

donrigor

Joined: 26 Feb 2009
Posts: 19

01 Mar 2009 17:59 microcontroller based tachometers

Thanks a lot guys! you all helped me! i guess this a good start here in edaboard.
By the way, Which is good fora beginner BASIC or C?

GrandAlf

Joined: 09 Mar 2002
Posts: 409
Helped: 23

01 Mar 2009 22:46 make a tachometer

C can be a bit frustrating to learn at times, but ultimately the better option. Probably the best approach is to learn Basic first, then if you get into it, progress to C. Pic chips are common and cheap, with a good range of compilers for most variants. Pic Basic Pro and CCS C come to mind. I think you may be able to get cut down free versions. If not, there are a number free one available. I think if you go down this road, you will find it much the preferred option in future designs. Software is flexible, hardware usually not.

hameeds01

Joined: 23 Aug 2005
Posts: 289
Helped: 12
Location: NUST Islamabad

04 Mar 2009 9:43 tachometer.gif

without microcontroller It will be a very tedious job better to learn microcontroller, start it from PIC microcontrollers

garg29

Joined: 17 Nov 2004
Posts: 352
Helped: 10

15 Mar 2009 8:51 details of microcontroller based tachometer

you can use 89c2051 much cheaper than PIC controllers, & is perfect for this application

GrandAlf

Joined: 09 Mar 2002
Posts: 409
Helped: 23

23 Mar 2009 9:08 89c2051 tachometer project

Good luck with your project, keep asking questions. You may be better off starting with Pic series chips, as there are probably more free tools available for these. Your choice of course, best to do a bit of reading first.

donrigor

Joined: 26 Feb 2009
Posts: 19

26 Mar 2009 3:07 preferred tachometer

I'am now starting with CCS C. I'm experimenting with lt. What should I write in the code to have an input of logic 1 or 0 and also for the output of logic 1 or 0?

GrandAlf

Joined: 09 Mar 2002
Posts: 409
Helped: 23

26 Mar 2009 14:45 make a tachometer

Check out some of the included example ccs files.
Initially give pins names as per example file.

#include <16f648A.h>
#use delay(clock=4000000)
#fuses INTRC_IO,WDT,NOPROTECT,PUT,MCLR,NOLVP,BROWNOUT

// Outputs
#define Direction PIN_A2
#define Motor PIN_A3
#define Status PIN_A6
#define SolIn PIN_A7
#define SolOut PIN_A0
#define TLight PIN_A1

//Inputs
#define Progtime PIN_A4
#define PP PIN_B0
#define Operate PIN_B1
#define Raise PIN_B2
#define UpLimit PIN_B3
#define Fire PIN_B4
#define SafeStop PIN_B5
#define Safety PIN_B6
#define DownLimit PIN_B7

To write to PinA3(Motor)
output_high(Motor); "this is HIGH"
output_low(Motor); "This is LOW"

To read same pin
if (input(Motor)) "Do something"; "Reads HIGH Input)

if (!input(Motor)) "Do something"; "Reads LOW Input)

Note the ! for reading low inputs, miss out for high.

You need to do a fair bit of reading the help files.

donrigor

Joined: 26 Feb 2009
Posts: 19

17 Apr 2009 5:02 +tachometer +turbine +ir +engine +diy

I've tried some of the codes. Yeah it was good!

srikanthsamaga

Joined: 14 Dec 2008
Posts: 101
Helped: 4
Location: Mangalore

20 Apr 2009 3:05 klq564 7-segment display

donrigor wrote:

can i learn uC in two weeks?

depends on your ability...
I have some 8051 interface tutorials published at:

http://www.shree-electronics.com/microcontrollers.htm

enjoy learning microcontrollers...

Very Happy

ronydc

Joined: 17 Nov 2005
Posts: 148

09 Jun 2009 11:41 klq564 display

pranam77 wrote:

======================================

this parnam is an agent of this site... and marketing the products.. if you ppl don beleave... check his all posts.. he always talk abt this site.. and sell the products.. this should be banned on this forum..

I strongly recommand .. that this "parnam" should be banned for this forum.
we don want agents here . .we are students and lets share our knowwledge here .. we dont want the business ppl here.. ant specially not this .. AGENTS.!!

-- RONY

superman2009

Joined: 18 May 2009
Posts: 4

09 Jun 2009 15:12 klq564

ronydc wrote:

pranam77 wrote:

If some one is helping other by guiding to a website, you too can. Nothing harm in sharing good links and i have see you have given some good links in your old post. Hope you are agent of those sites? Many people promote thier favourite sites for good of others which doesn't make then agents. You may also see Blueroom, and some others who promote thier site. So why cany you be banned for writing rubbish every time?
After all learn to respect your seniors. Bieng joined in Nov 2005, you are still at full member level2, with no helps done to anyne. Whereas Pranam77 who joined EDA in April2008, is at Advanced member level 1 with 34 helpings. You are still a child. learn from seniors. May be i am repeating your own words forund in your old posts.

Deepak350

Joined: 27 Jan 2009
Posts: 39
Location: India

18 Jun 2009 12:56 revolution par minute sans tach

@ronydc - Hi ronydc, its better you contact the mods for statements like this. There will be a lot of fuss created if posted here Neutral

kjab8706

Joined: 01 Aug 2009
Posts: 1
Location: Rolla

01 Aug 2009 22:49 microcontroller based tacho meter.

After looking at this code seems that this tach is capable of reading up to 99,999 rpms. Am I correct in my assumption, if so that would be great because i am trying to make a tachometer for my diy jet engine and would like to know my turbine speed for safety reasons