Homebrew Disabling 3DS LED Lights with Homebrew?

[Kokonoe]

You can disable the yellow light turning off wireless, but as for power charging and the bright blue light that notifies you the system is powered on, you cannot disable those normally.

Is there a way via homebrew to disable these lights to where they are never on? The blue light in particular is bad for my eyes when I play in the dark. Thanks.

 

[solress]

good luck bricking if you do that. So no, it's not possible.

 

[PabloMK7]

You can disable the yellow light turning off wireless, but as for power charging and the bright blue light that notifies you the system is powered on, you cannot disable those normally.

Is there a way via homebrew to disable these lights to where they are never on? The blue light in particular is bad for my eyes when I play in the dark. Thanks.

I think someone tried, and it is possible (see ctraging) but if you do it incorrectly, you can get a MCU brick (cannot be recovered by NAND backup)

 

[EmuAGR]

I think someone tried, and it is possible (see ctraging) but if you do it incorrectly, you can get a MCU brick (cannot be recovered by NAND backup)

That CTRAging is temporal, it's just a test app. Just stick tape on the leds. Ta-da!

 

[astronautlevel]

I think someone tried, and it is possible (see ctraging) but if you do it incorrectly, you can get a MCU brick (cannot be recovered by NAND backup)

Also, the LED brick is a full MCU brick, which means that even if you hardmod the MCU to tap into the i2c lines to flash it you won't be able to recover.

 

[Kokonoe]

Reusable stickers it is then.

 

[SomeGamer]

I think someone tried, and it is possible (see ctraging) but if you do it incorrectly, you can get a MCU brick (cannot be recovered by NAND backup)

But I can mess around with them safely in CTRAging, right?

 

[solress]

But I can mess around with them safely in CTRAging, right?

yea, the system software is made for that after all.

 

[astronautlevel]

But I can mess around with them safely in CTRAging, right?

Yeah, it's just sending a bad state that causes an irrecoverable MCU brick. CTRAging is made by Nintendo and should be fine.

I mean, in reality, as long as you don't try to run a fuzzer against the i2c (aka what yls8 did when he got the MCU brick) it shouldn't be too problematic...

 

[SomeGamer]

Thanks! One day, I'd love to see a homebrew using these LEDs. A music player maybe?

 

[guisadop]

Maybe a little off-topic, but why does messing with the leds cause a brick?

 

[astronautlevel]

Maybe a little off-topic, but why does messing with the leds cause a brick?

You can brick the MCU firmware by sending a bad LED pattern to it. The MCU handles the i2c communication with the LED, and for some reason if you send a bad format it bricks it. I'm not too sure on the details of why exactly the MCU firmware can't handle it though,

 

[cearp]

That CTRAging is temporal, it's just a test app. Just stick tape on the leds. Ta-da!

exactly what i do with the very bright blue led! a little piece of electrical tape and everything is ok.
a little bad side effect, i don't see when it is red, so sometimes i only know when my battery is low because when it is very low the notification led also starts flashing red.
then i know to plug it in!
or, just check the battery level every so often via the home menu...

 

[hundshamer]

You can remove thee LEDS altogether as well, or put the tape on the blue LED inside the 3DS, as they are separate (power/low power) unlike the RGB notifiactaion LED.

 

[SomeGamer]

Just a workaround, if you disable the blue LED in CTRAging, it will stay that way until you restart the 3DS.

 

[Mr.ButtButt]

Wear sunglasses

 

[SomeGamer]

Wear sunglasses

10/10 Best advice ever. That way, you'll see the LEDs but not the screen.

 

[Mr.ButtButt]

10/10 Best advice ever. That way, you'll see the LEDs but not the screen.

they said because of dark rooms the LEDs screw with their eyes.
i figured if you wear sunglasses it tones down on the screen AS WELL as the LEDs

also they're in a dark room, they're not gonna see anything in the dark anyways sooo..

 

[Pokéidiot]

You can try messing with LED patterns with ctrulib (in your own code), but doing it you risk a full MCU brick.
MCU bricks aren't recoverable even with NAND mod.

 

[Duo8]

No attempt at RE-ing the MCU firmware yet?
The 3dbrew page only lists it as "custom MCU", not even what it's based off of. What if it had internal storage?