how to light leds

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Hey Guys!

I'm trying out to write a script for my Alesis QX49. I was able to map the transport key properly but it would be nice if i can make the button led work. Is there the possibility? If yes, can someone point me to the documentation for that? I was searching for "led" but i didn't have any chances with it!

Thanks!

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For many controllers you'd simply send the same midi message the button itself is sending when being pressed back to the controller with a zero value for "light off" and some >=1 or 127 value for "light on" or some specific color.

However, the Q49 midi implementation chart looks like your controller isn't supporting incoming midi at all, so you're probably out of luck.
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Thanks for the quick answer! I will contact them to figure out if it's possible or not!

EDIT: It turned out that these buttons don't even have a led illumination, i was fooled by their design :?

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