Brads Electronic Projects Forum

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I can now connect to bradsprojects.com from my home computer. my life has been saved haha!

For some reason i cant connect to bradsprojects.com from my ip address. Right now im using my schools computers.

How do you access the 8th output on the 7442 if you have the input connected to ground?

The input requires the D colum to have a high instead of a low.

Ive been thinking about this project for a while now and i could use a little insight. I plan on using potentiometers as the controllers and a GR led matrix as the display.

Would assembly be an efficient way of programing this?

If you have any ideas, suggestions, example code please let me know.

hey brad, i changed the delay to 03 and i cant tell a difference between that and 255.

what could be the problem?

Hey brad, thanks for that tutorial.
I do have a question about it though, how would you scroll an image (or sentence) across the matrix?

hey thanks a lot for the help

by the way, i really like your 24x24 led matrix project and i'd love to see a video of it sometime.

Im still confused... looking at brads schematic, it looks like the anode leads are coming out on the left side of the matrix and the cathodes are coming out the top... on my matrix schematic... the cathodes come out the the left and the anodes on top. Could you tell me what pin on the matrix(data sh...

The schematic diagram for the great race led matrix looks different than the schematic diagram for the matrices i bought. Can someone take a look at the data sheet and tell me if i bought the wrong led matrix? and can someone tell me the difference between the diagrams? THANKS anthony http://www.sur...

Im a little confused. Will this code count down from 255, 255 times, and then do it again 255 times? ledon movlw d'255' movwf delay_1 movwf delay_2 movlw d'255' movwf delay_3 delay_loopon decfsz delay_1, f goto delay_loopon decfsz delay_2, f goto delay_loopon decfsz delay_3, f goto delay_loopon retu...

I thought maybe it had something to do with the decfsz command

can you please explain why it still looks the same?

Also, how come when i added this code, it doesnt look like led stays on for any longer than it did before?

Sorry for the late reply, i've been pretty busy lately. So i guess i'm confused about the order you place some of your code in. Does it matter if you place movwf delay_2 before movwf delay_1. Also, does it matter if you place decfsz delay_1 before decfsz delay_2. The reason i ask this question is be...

Hey everyone, i just started programming about a week ago so don't be surprised if i'm doing something completely wrong. I'm trying to make a led stay on longer than its stays off and this is my approach. Please tell me if my approach would work. Thanks Anthony begin bsf PORTB, 0 call ledon bcf PORT...