2 Daisy-chained TLC5940 and LCD Display library works badly (blinking output...)

[GoogleCodeExporter]

Hi.

I want to use 2 TLC5940 to get 32 PWM outputs. To control them, I want to use 
analogs inputs and a 16x2 LCD display.

When I load the firmware on the UNO, works good but the output looks blinky.

When I open the tlc_config.h and I modify the constant NUM_TLCS to 1, 
everything works good (LCD+buttons+TLCs outputs)...

But without changing nothing in the code, when I pass the constant NUM_TLCS to 
2, so I have the correct outputs, but it blinks...

Someone have some experience with daisy-chained TLCs and LCD display?

Regards.

Original issue reported on code.google.com by axeldeli...@gmail.com on 23 Jan 2014 at 6:55

[GoogleCodeExporter]

I can only answer so far without further information.

I am assuming you are driving LED's not servos? Are they RGB? or single colour.

There are two circumstances which I have found that they will blink.

1.) The codes timing of incremental brightness isn't right. Please post your 
code and I can take a look.

2.) If you are powering the LED's directly from the arduino... a voltage drop 
will cause the LEDS to flash or blink.

Please be more specific and post code. Happy to help.

- Thanks, 

LavaLance

Original comment by lavala...@gmail.com on 26 Jan 2014 at 12:42