DIY Moving Message Display

[sn_burki]

function void lcd_puts(unsigned char*str)

hi

OBIALOR you are right, people have started a bussiness on this forum now, whenever i needed help, no one could help me, and if any one could help me he offered help and in return asked me to pay,,,, we should help each other in this forum, and should not use for bussiness purposes.

regards

 

[OBIALOR]

cd4094 8051

Thank you my friend ,just look at the past postings they are full of good projects and schematics and most of the authors of the project are ready to help then,now is not like that, no one post a good project here again, is it that the diy moving sign display forum is finished?

 

[karim_el_joker]

moving message display controlled by pic 16f84

thanks forever
i want aproject for 16 character moving display

 

[edpltony]

cd4094 signboard

I have got some useful docs in my site www.embeddednovels.co.nr

 

[OBIALOR]

moving message display silicon chip

edpltony,
the website you claim does'nt exist.

 

[sn_burki]

algorithm for moving message display

no this site is existing and i checked it

 

[sanlie]

led moving message display sign bascom avr

There is the best topic.
many have project & schematic for Mov message display.
thank 4 all

 

[OBIALOR]

led moving message display project bascom avr

Sn_burki,
can you please send one of the documents you copied to me?

 

[selimt]

avr hc164

HI ALL

please i nead a working pic projects moving message please pleassssssse
thank you in advance

 

[bynz]

easy68k project lcd

hi! nice topics! has somebody done this using protonplus?

any links is very much appreciated!

thanks in advance

 

[babatundeawe]

89s52 dotmatrix display 16x80

Is there a circuit based on the PIC controller also?

bimbla.

yeah quite handful of them but the one i found most interesting with tutorials was that which i got from the talking electronics website

http://www.talkingelectronics.com/te_interactive_index.html
have fun and good luck

 

[fuat_09]

diy moving message display circuit diagram

pic based Message Display

**broken link removed**

 

[babatundeawe]

diy moving message display circuit board

pic based Message Display

h**p://www.elektroboard.com/v2/modules/smartsection/item.php?itemid=40

hi pal, i think that the site is a good one, but the language. can you please give the language so that it could be translated for everyone. thanks

 

[fuat_09]

atmel+diy led moving

answer to babatundeawe

excuse me,my english language bad,I can't translate.
I'm sorry!

 

[blueroomelectronics]

proton display 4x7 assembler

pic based Message Display

h**p://www.elektroboard.com/v2/modules/smartsection/item.php?itemid=40

It's not a good design, the displays have a 1/32 duty cycle and would be very very dim. Also the 74HC154 is used as the column driver @ 50ma so each LED can be driven with 6.25ma max. Effective current is less than .2ma per LED.

LED displays can be overdriven to 30ma - 40ma per LED depending on duty cycle used.

I'll be designing a 7x20 display this summer. Lots of driving transistors and a 1/7 duty cycle so nice and bright.

Depending on how bright the HE RED matrix is it will be 10ma per LED (200ma is the max the PIC is rated to drive in total) effective 1.42ma per LED @ 1/7.
Or with driving transistors on both row & column 40ma per LED effective 5.7ma per LED which is the max they can be driven.

PS LEDs appear brightest at 40 hz per LED, just above flicker for the human eye. So refresh will be 40x7 (280hz)

 

[awaisjaan]

moving message software freeware

hi all of you. i m new member n i appreciate all of you doing valueable work.

basically i m also working on the same project.i m using following components so that u can have the idea.

1- 8051
2- 4094(serial to parallel output)
3- uln2803(buffer to the colomns)
4- cd4514(decoder for rows)
5- 5*7 led matrix(80 colomns)

plz help me out for writing the code
6-

 

[vikramprataapsingh]

microcontroller-based moving-message display

hi

for start u should go for microchip 16f76 that is cheep and having good current capabilities and good speed


i suggest to use 74595 shift register and 74138 decoder

Added after 38 seconds:

hi

for start u should go for microchip 16f76 that is cheep and having good current capabilities and good speed


i suggest to use 74595 shift register and 74138 decoder

 

[fazan83]

scrolling from left to right with pic16f628a

hi

for start u should go for microchip 16f76 that is cheep and having good current capabilities and good speed


i suggest to use 74595 shift register and 74138 decoder

Added after 38 seconds:

hi

for start u should go for microchip 16f76 that is cheep and having good current capabilities and good speed


i suggest to use 74595 shift register and 74138 decoder

Guys. this link should help a lot to those who familiar with PIC Basic Pro Language.

This is a complete design you can stdy and refer this design.
But you should be a membe of the picbasic forum in order to view the posts.

https://www.picbasic.co.uk/forum/showthread.php?p=37965&posted=1#post37965

 

[Mike K8LH]

moving display using 89s52 & 5x7 dot matrix

PS LEDs appear brightest at 40 hz per LED, just above flicker for the human eye. So refresh will be 40x7 (280hz)

Is there research somewhere I can read on brightness vs. refresh rate?

 

[blueroomelectronics]

wireless message display

PS LEDs appear brightest at 40 hz per LED, just above flicker for the human eye. So refresh will be 40x7 (280hz)

Is there research somewhere I can read on brightness vs. refresh rate?

**broken link removed**