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Running LED from U-HID? (LED basics)
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edgeofblade:
So, bit of a baby in the dark situation here. I expect I'll be doing a lot of this trial and error because there was something I just plain missed, so I'll be asking for help frequently here, if that isn't too much of an annoyance.

I'm experimenting with the RGB led button kit from ultimarc with a U-HID nano (selected because I thought it would be the most flexible). I plugged the Nano in first, got the on-board led to light, assuming that means all good. I couldn't find LED wire key for that button kit, so I assumed yellow was ground and RGB was their respective colors.Then I connected the assembled button's LED leads to the U-HID, configured the nano pins for the NUM, SCROLL, and CAPS leds, just for an initial test.  I wired it accordingly to the U-HID, tried to program the profile, which said it failed to program. (I was playing with U-HID usb button this morning too and that failure seemed to be a false negative, so I reasoned this could be the case as well.) Then I noticed (not immediately) that the U-HID config was not recognizing the board. I further found that the on-board LED was no longer lighting when I plugged it in.

Tell me, did I fry my U-HID? What else am I missing?
TopJimmyCooks:
i just had a uhid nano issue and I need to send it back.  I got a new one and it worked perfectly.  hardware or firmware was somehow damaged.  would not reupload firmware. 
edgeofblade:
I think you nailed it. I tried to update firmware and I had problems after that. Thanks.

Update: worked with Andy, got the driver reinstalled and reinserted the firmware he provided. Board posts in utility and led lights on connection. All good.
PL1:

--- Quote from: edgeofblade on January 20, 2014, 01:52:20 pm ---I couldn't find LED wire key for that button kit, so I assumed yellow was ground and RGB was their respective colors.

--- End quote ---

Close, but yellow is the operating voltage and RGB are the grounds for the colors since most arcade-hobbyist vendors sell the common anode configuration LEDs and most LED controllers control the ground side of the circuit.




Scott
edgeofblade:

--- Quote from: PL1 on January 20, 2014, 08:56:34 pm ---
--- Quote from: edgeofblade on January 20, 2014, 01:52:20 pm ---I couldn't find LED wire key for that button kit, so I assumed yellow was ground and RGB was their respective colors.

--- End quote ---

Close, but yellow is the operating voltage and RGB are the grounds for the colors since most arcade-hobbyist vendors sell the common anode configuration LEDs and most LED controllers control the ground side of the circuit.




Scott

--- End quote ---

So, is a common anode led designed to work with U-Hid? Is common anode considered not standard?


--- Quote ---The U-HID will drive standard LEDs only.

LEDs are connected between the U-HID pin and ground.

--- End quote ---
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