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geekhack Community => Keyboards => Topic started by: Lemma998 on Thu, 27 July 2017, 19:27:48

Title: [Help]Adding leds to Poker3{Solved}
Post by: Lemma998 on Thu, 27 July 2017, 19:27:48

Hi all,
I really need your help.
I have a poker3. I hope to add backlight to my keyboard. And I bought 100pcs 2x3x4 white led (20mA).
Now I solder some of them to PCB and test it. I found I can not light up those LEDs.
Is there anyone can help me? I really appreciate.

Title: Re: [Help]Adding leds to Poker3{Solved}
Post by: Lemma998 on Fri, 28 July 2017, 10:05:16

This is a tragedy. This is a disaster. When I soldered all, I realized that I made a mistake. Anode and Cathode are exchanged. I think Poker3 PCB PCB mark is misleading. I should solder the cathode of led to the positive mark "+" on PCB.
Sad  :'( :'( :'( :'( :'( :'( :'( :'( :'(

Title: Re: [Help]Adding leds to Poker3{Solved}
Post by: tp4tissue on Fri, 28 July 2017, 10:17:26

well u can cut the traces where they begin,  and flip it with copper wires,

this might be less work than desoldering all of them and resoldering.