Search found 76 matches

by nodoubtman
Mon Apr 15, 2013 1:12 am
Forum: Your projects
Topic: 2 8x8 matrix scrooling text, how to make the connection?
Replies: 9
Views: 10910

Re: 2 8x8 matrix scrooling text, how to make the connection?

The screens that I use will work with that project. That project only has red LED matrix displays so all you need to do is connect the orange wires (as shown in bitfogavs image a few posts back) to the ULN2803 (in the image on the site link you provided) Then you connect the yellow wires (in bitfog...
by nodoubtman
Fri Nov 23, 2012 10:09 am
Forum: Your projects
Topic: 2 8x8 matrix scrooling text, how to make the connection?
Replies: 9
Views: 10910

Re: 2 8x8 matrix scrooling text, how to make the connection?

brad wrote:No problem :)
in this project brad : http://embedded-lab.com/blog/?p=2661#more-2661

does he use same type of matrix for car race game??
CA??
will it work with these matrix?

thank you!
marC:)
by nodoubtman
Sat Oct 13, 2012 11:17 am
Forum: Your projects
Topic: 2 8x8 matrix scrooling text, how to make the connection?
Replies: 9
Views: 10910

Re: 2 8x8 matrix scrooling text, how to make the connection?

brad wrote:Looking at bitfogavs image (i.e. the text is on the bottom):

24 23 22 21 20 19 18 17 16 15 14 13







01 02 03 04 05 06 07 08 09 10 11 12

It's the same as reading a chip :)
oh that's why it didnt work properly..

thank you again!
marC:)
by nodoubtman
Sat Oct 13, 2012 12:54 am
Forum: Your projects
Topic: 2 8x8 matrix scrooling text, how to make the connection?
Replies: 9
Views: 10910

Re: 2 8x8 matrix scrooling text, how to make the connection?

Have a look here: http://www.bradsprojects.com/forum/viewtopic.php?f=2&t=250 bitfogav explains it extremely well :) According to the datasheet : http://imageshack.us/a/img222/8184/dotmatrix8x8datasheet.jpg and this image : http://imageshack.us/a/img521/6488/8x8matrix227.jpg i would like to know fro...
by nodoubtman
Fri Oct 12, 2012 9:31 am
Forum: Your projects
Topic: a clock, calendar, temperature lcd 20x4 interfacing
Replies: 3
Views: 3393

Re: a clock, calendar, temperature lcd 20x4 interfacing

That's a tough one! I haven't programmed in assembly language in years - and the comments are in a different language... Have you had any success in modifying variables? i have modified this code : ------------------------------ REGLA2 CALL ANTIREB INCF ANNEE MOVLW h'0A' SUBWF ANNEE,0 BTFSS Z GOTO ...
by nodoubtman
Fri Oct 12, 2012 12:02 am
Forum: Your projects
Topic: a clock, calendar, temperature lcd 20x4 interfacing
Replies: 3
Views: 3393

a clock, calendar, temperature lcd 20x4 interfacing

Hi there! I have found a website a clock, calendar, temperature on lcd 20x4 screen, but when i tried to change the year, i cannot go further than year 2009, it is written in assembler, my question is how can i change to change the year up to 2012 until 2099 ? i think the code to be modified is : ---...
by nodoubtman
Sun Sep 16, 2012 9:49 am
Forum: The Great Race
Topic: the great race completed but only 1 problem.. look at my vid
Replies: 3
Views: 7808

Re: the great race completed but only 1 problem.. look at my

It looks as though you have something shorted. You shouldn't have any RED led's lighting up on that second bottom row. Have a good look at your circuit to see if you can find some shorts. what is the output of the 7442 to lit up the second bottom row?? so i can see if something is shorted.. in ther...
by nodoubtman
Sun Sep 16, 2012 5:10 am
Forum: The Great Race
Topic: the great race completed but only 1 problem.. look at my vid
Replies: 3
Views: 7808

the great race completed but only 1 problem.. look at my vid

Hi! I have completed the great race, but there is a problem, here's the video.
Can you guys tell me what is the pin of the 7442 has problem?

thank you!
marC:)

video link : http://www.youtube.com/watch?v=8-016DCC ... e=youtu.be
by nodoubtman
Tue Aug 28, 2012 10:01 am
Forum: Your projects
Topic: 2 8x8 matrix scrooling text, how to make the connection?
Replies: 9
Views: 10910

2 8x8 matrix scrooling text, how to make the connection?

Hi all! I would like to complete a great project, which is : http://embedded-lab.com/blog/?p=2661#more-2661
i'm wondering where are the row and the collumn on the matrix 24 pins?

thank you!
marC:)
by nodoubtman
Fri Aug 24, 2012 2:20 am
Forum: The Great Race
Topic: Write longer messages on Matrix
Replies: 14
Views: 15393

Re: Write longer messages on Matrix

bitfogav wrote:No sorry marC, the Program Counter is only 1 data byte, so the maximum it can count up to is 255.
oh ok, i see..
so :
PC equ 0x02
0x02 = 255?

thank you!
marC:)
by nodoubtman
Fri Aug 24, 2012 1:56 am
Forum: The Great Race
Topic: Write longer messages on Matrix
Replies: 14
Views: 15393

Re: Write longer messages on Matrix

No its not possible to make long sentences, has the Program Counter is only limited to 255 counts, so when the Program Counter reaches 255 it will then jump over to Zero again and thats why the message is looping back to the start when it gets to the letter "U". can we increase the program counter ...
by nodoubtman
Fri Aug 24, 2012 1:54 am
Forum: The Great Race
Topic: Write longer messages on Matrix
Replies: 14
Views: 15393

Re: Write longer messages on Matrix

*EDITED By Bitfogav - moved to new topic*
bigof , can you help me?

thank U!
marC:)
by nodoubtman
Thu Aug 23, 2012 11:15 pm
Forum: The Great Race
Topic: Write longer messages on Matrix
Replies: 14
Views: 15393

Write longer messages on Matrix

I would like to write longer message like this : 'Marc Paradis électronique :)', but it cuts in after the u ' and loop back :( i don't know why, i would like to write some complete sentences, is there a way? thanks a bunch! :) ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ; ; ; The scroller ; ; ; ; ...
by nodoubtman
Wed Aug 22, 2012 4:29 am
Forum: Your projects
Topic: CLAP CLAP circuit with RELAY OUTPUT
Replies: 12
Views: 8207

Re: CLAP CLAP circuit with RELAY OUTPUT

bitfogav wrote:So when you use the two clap programme then everything works correctly??, what happens when you use my programme? Do anything happen when you clap once?.
no nothings happens, the led is still on, no reaction of the relay

thanks!
marC:)
by nodoubtman
Mon Aug 20, 2012 9:00 am
Forum: Your projects
Topic: CLAP CLAP circuit with RELAY OUTPUT
Replies: 12
Views: 8207

Re: CLAP CLAP circuit with RELAY OUTPUT

bitfogav wrote:Have you tested your circuit with the two clap programme, Do the circuit work then?.
yeah his source code works !

but can you modify it for one single clap with this hardware?

thanks!
marC:)