LED Mini Signboard PIC 16F628A - Page 2 - Electronic Circuits Projects Diagrams Free

pasanlaksiri · 30th October 2009, 04:12 PM

Hi,
Connecting few Dot Matrix blocks and show some words or clock isn't that hard.
How about using dedicated display drivers. Like HOLTEK chips, MAX Ics & etc. It can reduce the MCU display driving load. That is a big saving right ! And also those chips hv some cool options like Display Dimming, Display Blinking, blah.blah....

Don't you think because of that saving we can do much more things with our MCUs ?

Plz correct me if im wrong.
Thanks

Gayan Soyza · 30th October 2009, 05:44 PM

Mike

Here is another design of mine.The hardware is similar to your method with some minor changes in column driving side.

I cannot resist I want to show.

YouTube - Sign Large

Mike I like that "Micro Application Consultants" title

Gayan Soyza · 30th October 2009, 05:57 PM

A great programmer can reduce hardware cost.
A great programmer can write compact efficient code.
A great programmer has enough memory & space.
What he cannot do!!

Mike, K8LH · 30th October 2009, 06:00 PM

Man, that's a big sucker (lol) and it looks very nice...

sundanees · 1st November 2009, 10:33 AM

hi gayan,
its good u're design..
i need soucr code
thx

Gayan Soyza · 2nd November 2009, 01:15 AM

Quote:

Originally Posted by sundanees

hi gayan,
its good u're design..
i need soucr code
thx

Hex file is in the zip file.No source code I'm providing.

pasanlaksiri · 3rd November 2009, 06:47 AM

Quote:

Originally Posted by Gayan Soyza

A great programmer can reduce hardware cost.
A great programmer can write compact efficient code.
A great programmer has enough memory & space.
What he cannot do!!

Yes i agree with that. But Gayan even in ur big bang display ur still running some text. When u want to show some images like public signs. U need pretty big display. ( at least like 16 X 72 ) A greater number of displays will require larger program memory capacities, while greater changes in the display will require larger data memory.

So with that load i think its better to go with some display drivers.

Gayan Soyza · 3rd November 2009, 07:46 AM

Increasing the rows & doing a multi colour display get bit more complex.I like to try that holtek chips in that case.I'm still waiting for its actual size over the price

And the messy wiring now I'm suffering is another pain.

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30th October 2009, 04:12 PM	#16
pasanlaksiri	Hi, Connecting few Dot Matrix blocks and show some words or clock isn't that hard. How about using dedicated display drivers. Like HOLTEK chips, MAX Ics & etc. It can reduce the MCU display driving load. That is a big saving right ! And also those chips hv some cool options like Display Dimming, Display Blinking, blah.blah.... Don't you think because of that saving we can do much more things with our MCUs ? Plz correct me if im wrong. Thanks __________________ Pasan... Last edited by pasanlaksiri; 30th October 2009 at 04:12 PM.

30th October 2009, 05:44 PM	#17
Gayan Soyza	Mike Here is another design of mine.The hardware is similar to your method with some minor changes in column driving side. I cannot resist I want to show. YouTube - Sign Large Mike I like that "Micro Application Consultants" title Attached Thumbnails __________________ Gayan My Website http://gsmicro.blogspot.com/ Last edited by Gayan Soyza; 31st October 2009 at 01:43 PM.

30th October 2009, 05:57 PM	#18
Gayan Soyza	I want to be like him A great programmer can reduce hardware cost. A great programmer can write compact efficient code. A great programmer has enough memory & space. What he cannot do!! __________________ Gayan My Website http://gsmicro.blogspot.com/

30th October 2009, 06:00 PM	#19
Mike, K8LH	Man, that's a big sucker (lol) and it looks very nice...

1st November 2009, 10:33 AM	#20
sundanees	hi gayan, its good u're design.. i need soucr code thx

3rd November 2009, 07:46 AM	#23
Gayan Soyza	Increasing the rows & doing a multi colour display get bit more complex.I like to try that holtek chips in that case.I'm still waiting for its actual size over the price And the messy wiring now I'm suffering is another pain. __________________ Gayan My Website http://gsmicro.blogspot.com/ Last edited by Gayan Soyza; 3rd November 2009 at 07:47 AM.