Search found 76 matches
- Mon Apr 15, 2013 1:12 am
- Forum: Your projects
- Topic: 2 8x8 matrix scrooling text, how to make the connection?
- Replies: 9
- Views: 23219
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...
- Fri Nov 23, 2012 10:09 am
- Forum: Your projects
- Topic: 2 8x8 matrix scrooling text, how to make the connection?
- Replies: 9
- Views: 23219
Re: 2 8x8 matrix scrooling text, how to make the connection?
in this project brad : http://embedded-lab.com/blog/?p=2661#more-2661brad wrote:No problem
does he use same type of matrix for car race game??
CA??
will it work with these matrix?
thank you!
marC:)
- Sat Oct 13, 2012 11:17 am
- Forum: Your projects
- Topic: 2 8x8 matrix scrooling text, how to make the connection?
- Replies: 9
- Views: 23219
Re: 2 8x8 matrix scrooling text, how to make the connection?
oh that's why it didnt work properly..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
thank you again!
marC:)
- Sat Oct 13, 2012 12:54 am
- Forum: Your projects
- Topic: 2 8x8 matrix scrooling text, how to make the connection?
- Replies: 9
- Views: 23219
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...
- Fri Oct 12, 2012 9:31 am
- Forum: Your projects
- Topic: a clock, calendar, temperature lcd 20x4 interfacing
- Replies: 3
- Views: 7957
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 ...
- Fri Oct 12, 2012 12:02 am
- Forum: Your projects
- Topic: a clock, calendar, temperature lcd 20x4 interfacing
- Replies: 3
- Views: 7957
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 : ---...
- 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: 14664
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...
- 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: 14664
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
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
- Tue Aug 28, 2012 10:01 am
- Forum: Your projects
- Topic: 2 8x8 matrix scrooling text, how to make the connection?
- Replies: 9
- Views: 23219
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:)
i'm wondering where are the row and the collumn on the matrix 24 pins?
thank you!
marC:)
- Fri Aug 24, 2012 2:20 am
- Forum: The Great Race
- Topic: Write longer messages on Matrix
- Replies: 14
- Views: 31383
Re: Write longer messages on Matrix
oh ok, i see..bitfogav wrote:No sorry marC, the Program Counter is only 1 data byte, so the maximum it can count up to is 255.
so :
PC equ 0x02
0x02 = 255?
thank you!
marC:)
- Fri Aug 24, 2012 1:56 am
- Forum: The Great Race
- Topic: Write longer messages on Matrix
- Replies: 14
- Views: 31383
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 ...
- Fri Aug 24, 2012 1:54 am
- Forum: The Great Race
- Topic: Write longer messages on Matrix
- Replies: 14
- Views: 31383
Re: Write longer messages on Matrix
bigof , can you help me?*EDITED By Bitfogav - moved to new topic*
thank U!
marC:)
- Thu Aug 23, 2012 11:15 pm
- Forum: The Great Race
- Topic: Write longer messages on Matrix
- Replies: 14
- Views: 31383
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 ; ; ; ; ...
- Wed Aug 22, 2012 4:29 am
- Forum: Your projects
- Topic: CLAP CLAP circuit with RELAY OUTPUT
- Replies: 12
- Views: 19013
Re: CLAP CLAP circuit with RELAY OUTPUT
no nothings happens, the led is still on, no reaction of the relaybitfogav 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?.
thanks!
marC:)
- Mon Aug 20, 2012 9:00 am
- Forum: Your projects
- Topic: CLAP CLAP circuit with RELAY OUTPUT
- Replies: 12
- Views: 19013
Re: CLAP CLAP circuit with RELAY OUTPUT
yeah his source code works !bitfogav wrote:Have you tested your circuit with the two clap programme, Do the circuit work then?.
but can you modify it for one single clap with this hardware?
thanks!
marC:)