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geekhack Projects => Making Stuff Together! => Topic started by: loizza on Mon, 24 July 2023, 07:34:44

Title: Backlight mod
Post by: loizza on Mon, 24 July 2023, 07:34:44

Hi everybody,

I'm working on a project to add backlight leds to my current ajazz ak33.
For some reason my pcb has pads to solder on leds, but once soldered they wont turn on. On further inspection i notice that the pcb (led)pads were not getting current.

I found a way to wire current to the positive pads and leds will be always on.

So here's where my headache begins: I want to find a way to switch them on or off like the CapsLock led indicator(I don't want backlight always on). I can wire the leds to the CapsLock led indicator line but the backlight leds will only be on when CapsLock is on.

Is there a way to reverse the CapsLock indicator so that my backlight is on except when I turn on CapsLock??

Any other ideas on how to be able to turn off and on leds will be much appreciated.

Thanks in advance.

Title: Re: Backlight mod
Post by: Leslieann on Mon, 24 July 2023, 20:03:00

Unless this has open firmware like QMK your only option is to install a small switch.

Okay, not entirely true, you could install a small Arduino Pro Micro running QMK and run them from it but that means adding a second controller and is way more complicated than just a small switch. In theory you could even control brightness depending on how far you're willing to go cutting traces and re-routing things.