Infinity x GMK 3Run 60% Keyboard Kit Discussions | Drop

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Infinity x GMK 3Run 60% Keyboard Kit

Mech Keys

FULL DISCUSSION

toinux

Jan 28, 2017

Many LEDs are not working, I checked the led of the number 1 key : the LED itselve is OK. The soldering is OK. Anyone having any issue like this ? I also tested tmk and qmk firmware, it flashes but the keyboard becomes inresponsive and windows indicates that I have an unknown usb device. Only the kiibohd driver is OK.
EDIT : QMK works fine if I plug it on the front usb port.

Jan 28, 2017

toinux

Jan 28, 2017

toinuxI'm absolutely not an expert in electronics, but I foud this : If I shortcut the led #22, every other leds are lightning If I shortcut the led #23, almost every other leds are lightning, including the led #22 So, _potentially_, every LEDs are OK but I have no idea what can cause this.

Jan 28, 2017

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Idef1x

205

Jan 28, 2017

toinuxI don't know about the leds unfortunately - but I noticed you have the switches mounted with the logo facing down and the led facing upwards. In the build guide, they are the other way around - I don't know if anyone more experienced know if this matters at all?

Jan 28, 2017

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toinux

Jan 28, 2017

Idef1xI think it's because in the build guide, the PCB is from the previous version that does'nt support LEDS.

Jan 28, 2017

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Iron-Atlas

Jan 29, 2017

toinuxI have the same issue with mine and I cant figure it out either.

Jan 29, 2017

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awelkflawkf

Jan 29, 2017

Iron-AtlasSame issue although not the same leds. For example, led8 is not working for me (key 7). First I've unsoldered and tried another LED - dead as well.
Then I've reversed the polarity of only that one LED and it works?

Jan 29, 2017

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HaaTa

558

Input Club

Feb 2, 2017

toinuxMost likely you didn't solder one of the leds in the correct direction.
Our keyboards use a matrix'd led driver, this means that even though LEDs seem to work in both directions, they really don't (you're just stealing current from another LED or short circuiting a bunch of them). All it takes is one LED soldered incorrectly (that one may be lit up, which makes this a bit tricky) for this to happen.
The schematic is on page 2 here, which should help trace the leds more easily -> https://github.com/kiibohd/pcb/blob/master/IC60/IC60.pdf
I am working on a firmware cli tool that will help debug this issue, but it's still at least a few weeks out.

Feb 2, 2017

toinux

Feb 2, 2017

HaaTaAll the LEDs are in the same direction, his seems correct, BUT I use the standard layout so I think I inverted the leds #62 and #63. I will resolder correctly and tell you. Big thanks for the tip !!!!

Feb 2, 2017

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toinux

Feb 2, 2017

HaaTaSo I unsoldered #62 and #63, but still same issue... I think I'll have to wait for your tool...

Feb 2, 2017

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toinux

Feb 4, 2017

HaaTaSo I unsoldered every LED and checked them one by one. The leds 2 10 17 18 19 20 21 22 23 24 27 35 43 are not working unless I shortcut like I explained in my first post. I think that the problem is from the board itself.

Feb 4, 2017

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