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Topic: I can't run 8x44 led matrix with HCF4094BE  (Read 911 times) previous topic - next topic

bagyanna

Hi everyone,
I have 8x44 led matrix has 11pcs HCF4094BE. I tried lots of things and code but I can't run. I want to make scrolling text. I connected like this http://senster.com/blog/wp-content/uploads/2009/02/expanding_outputs.pdf

I tried some codes (I changed according to me) .  I looked shift register. LEDs light up in mixed form, irregular.

Sory for my English.

Thank you in advance

bagyanna

every parts 4x8 leds.
Also if add to code

pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);

and I connected cathode,
all leds on. so leds works. :)

codlink

Have you tried with just one HCF4094BE and a 4x8 matrix?  Start small and work your way up.

What is the orange stuff on some pins?  Is that hair that's bridging pins?
//LiNK

bagyanna

Thanks for Reply
I worked 8 PCS led with 4094. Orange Stuff are rust  :)  
but i worked all leds. I gave the signal to only the first  4 columns.
AND all leds worked.


codlink

Quote
Orange Stuff are rust
I wouldn't be smiling about it, that's bad.
//LiNK

bagyanna

I have 28 pcs same panels. Some of them are very clean. Don't worry I worked on a clean one.  Actually I removed from the old city bus.

bagyanna

in the meantime I have tried solutions and codes in the following links


http://senster.com/blog/wp-content/uploads/2009/04/16x16_matrix.pdf
http://forum.arduino.cc/index.php?topic=63787.0
http://forum.arduino.cc/index.php?topic=174000.0
http://electricalengineeringcm.blogspot.com.tr/2015/01/hcf4094-shift-register-pins-always-high.html
http://ediy.com.my/index.php/blog/item/114-using-hef4094-shift-registers-with-arduino
http://www.instructables.com/id/810-LED-Matrix-with-4017/?ALLSTEPS
http://forum.arduino.cc/index.php?topic=213612.0

but lights It moving absurdly. Also I don't fully understand shift register('cos my english is not good) How I can create characters using shift register. Of course this is next job. First I should succeed light right led I want . I should choose any rows and columns.

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