Sure Electronics 0832 Dot Matrix Display

[wellyboot]

I bought 1 of these 8x32 display modules from ebay

http://cgi.ebay.co.uk/0832-LED-Dot-M...d=p3286.c0.m14

spent quite a lot of time looking at the datasheet and google, and put this piece of code together to demonstrate how to send data to the module.

this simply sends a smiley face to the display.

[peba25]

I bought 1 of these 8x32 display modules from ebay

http://cgi.ebay.co.uk/0832-LED-Dot-M...d=p3286.c0.m14

spent quite a lot of time looking at the datasheet and google, and put this piece of code together to demonstrate how to send data to the module.

this simply sends a smiley face to the display.

Hey wellyboot,

Looks cool. I saw your led clock using 4 times the sure electronics displays. I recently bought one of those displays. They are pretty cheap and looking good.
Do you share your code for making this clock?

Thanks in advance.

[wellyboot]

Hi there

still a work in progress at present, code is in a right state!
am working on building a slot machine, and this large display will simulate the reals spining in led graphics.
I rewrote the code from the smaller clock to make the bigger clock and now rewritting this for the slot machine

so havnt really kept the clock code, but to be honest its not very difficult to write especially when you look round this forum for bits and pieces of code.

Feel free to ask me if you need any help.

[peu]

Im about to make a slightly larger matrix (11x11) what happens with brighness?

lets say for example, if you lit 2 leds in one row and 6 in the next, is the brightness the same? if there is indeed a difference in brightness, is it noticeable?

[wellyboot]

I usume you are going to have 11 x 11 display modules.

as far as i can tell the brightness remains constant, on my 2 x 2 display module (64x16 Leds) clock the brightness of the leds looks the same regardless of what is being displayed.



each module can draw upto 220mA (all leds on)

[vtt-info]

Hello wellyboot,

I have built up the example. Sure Electronics 0832 Dot Matrix Display with the sure.txt code. It works well.
How can the smile be taken to scroll on the Display? Please give me a scrolling example for the Sure Electronics 0832 Dot Matrix Display.

Many thanks in advance

[flotulopex]

Hi wellyb00t,

Can you please tell how you control the led's brightness?

[wellyboot]

Hi wellyb00t,

Can you please tell how you control the led's brightness?

In the code (post 1) change this line:

address = %10101111 'pwm 16/16

bits 0,1,2,3 control brightness
the above line is for max brightness

address = %10100000 'pwm 1/16 min brightness
address = %10100111 'pwm 8/16 mid brightness

This can be found in the datasheet 'PWM Duty' in the command summary (3.3)