AudioFX board LED that is on when sound plays - is there a way to add one?

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evilottojr
 
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AudioFX board LED that is on when sound plays - is there a way to add one?

Post by evilottojr »

Hi! I have a project that requires a single sound to play and a single LED to come on as the sound is playing which turns off when the sound ends. The board oddly enough actually already has this built in with the little "playing" LED, so I was wondering if there was a way to install my own LED in its place. If not, is there a way I can accomplish the same thing without adding a bunch of auxiliary circuit boards? Thanks in advance!

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dastels
 
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Re: AudioFX board LED that is on when sound plays - is there a way to add one?

Post by dastels »

You can use the ACT output for exactly that. Look at the schematics at https://learn.adafruit.com/adafruit-aud ... /downloads to see how the ACT LED is connected. Try doing the same with an external LED. I'm unsure if the ATC pin can handle enough current for 2 LEDs, but it's worth a try. If not you'll need to add a transistor driver for the LED.

The ACT pin is described in the guide pinout page: https://learn.adafruit.com/adafruit-aud ... ns-1386552.

Dave

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evilottojr
 
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Re: AudioFX board LED that is on when sound plays - is there a way to add one?

Post by evilottojr »

dastels wrote: Fri Sep 30, 2022 9:21 am You can use the ACT output for exactly that. Look at the schematics at https://learn.adafruit.com/adafruit-aud ... /downloads to see how the ACT LED is connected. Try doing the same with an external LED. I'm unsure if the ATC pin can handle enough current for 2 LEDs, but it's worth a try. If not you'll need to add a transistor driver for the LED.

The ACT pin is described in the guide pinout page: https://learn.adafruit.com/adafruit-aud ... ns-1386552.

Dave
That sounds perfect! I'll give it a shot, thank you!

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