I want 2 build a tachometer with LCD display. Need circuit! - Electronic Circuits Projects Diagrams Free

swiftakias · 10th March 2004, 03:42 PM

I need to build a tachometer with an a lcd display or a 7 segment led display . If anyone knows i need a circuit diagram and components list to build it .PLEASE HELP!!!! :cry: :roll:

DemonRising · 28th March 2004, 09:07 PM

what is the max rpm that you want to monitor? also, what what are you using for a signal reference?

kentken · 30th March 2004, 05:18 AM

Lcds are easer to interface to, but, 7 Seg LEDs are larger and brighter.

For 7 Seg LEDs I use a MC4511, the chip recieves a bcd code, it latches it into memory, and displays. So there is no need to send it over and over to the display.

I have a counter that uses them, and they work great.

What controler are you going to use?
Interfaces?

L3wis · 31st March 2004, 08:25 AM

sounds like some1 hasn't started their school project yet :?

pasanlaksiri · 25th May 2008, 11:38 AM

Quote:

Originally Posted by swiftakias

I need to build a tachometer with an a lcd display or a 7 segment led display . If anyone knows i need a circuit diagram and components list to build it .PLEASE HELP!!!! :cry: :roll:

This one is grate for u

Jose Pino’s Projects » Tachometer/RPM with PIC

**3v0** · 25th May 2008, 11:52 AM

Quote:

Originally Posted by kentken

Lcds are easer to interface to, but, 7 Seg LEDs are larger and brighter.

For 7 Seg LEDs I use a MC4511
Interfaces?

Do you have a source for these. The major suppliers are no longer stocking many of the 7 seg parts.

pasanlaksiri · 25th May 2008, 12:01 PM

Quote:

Originally Posted by 3v0

Do you have a source for these. The major suppliers are no longer stocking many of the 7 seg parts.

Nope. but come on man Those SSDs very easy to find. And that design is also supportable to CA and CC SSDs

Its working nicely

**3v0** · 25th May 2008, 02:42 PM

Quote:

Originally Posted by pasanlaksiri

Nope. but come on man Those SSDs very easy to find. And that design is also supportable to CA and CC SSDs

The part can not be found at Digikey, Mouser, or Newark. A lot of the LED 7 segment parts are going out of production.

pasanlaksiri · 25th May 2008, 04:23 PM

Quote:

Originally Posted by 3v0

The part can not be found at Digikey, Mouser, or Newark. A lot of the LED 7 segment parts are going out of production.

Quote:

LED 7 segment parts are going out of production

Hmm r u really sure about that bro?

Because as i know there is no any other replacement for SSDs.

**3v0** · 25th May 2008, 05:18 PM

Quote:

Originally Posted by pasanlaksiri

Hmm r u really sure about that bro?

Because as i know there is no any other replacement for SSDs.

LCD's, they are ubiquitous.

pasanlaksiri · 25th May 2008, 06:23 PM

Quote:

Originally Posted by 3v0

LCD's, they are ubiquitous.

Nope ur WRONG. LCDs r not that much visible in bright day lights.

U ever cant Compair LCD with LED Disps

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10th March 2004, 03:42 PM	(permalink)
swiftakias	I want 2 build a tachometer with LCD display. Need circuit! I need to build a tachometer with an a lcd display or a 7 segment led display . If anyone knows i need a circuit diagram and components list to build it .PLEASE HELP!!!! :cry: :roll:

28th March 2004, 09:07 PM	(permalink)
DemonRising	what is the max rpm that you want to monitor? also, what what are you using for a signal reference? __________________ What\'s the worst thing that can happen?

30th March 2004, 05:18 AM	(permalink)
kentken	Lcds are easer to interface to, but, 7 Seg LEDs are larger and brighter. For 7 Seg LEDs I use a MC4511, the chip recieves a bcd code, it latches it into memory, and displays. So there is no need to send it over and over to the display. I have a counter that uses them, and they work great. What controler are you going to use? Interfaces?

31st March 2004, 08:25 AM	(permalink)
L3wis	sounds like some1 hasn't started their school project yet :? __________________ Lewis Wells lewis@emsg.co.uk www.emsg.co.uk