Hacking Ikea HALVKLART cabinet light

[tchicago]

Hi, All,
I came across the nice new little cabinet lights in IKEA, called HALVKLART.
They are sold in pairs, and they have an on/off switch inside the light itself. Pressing the light toggles it on and off.

Unfortunately, it is on by default. I.e. if you plug it in into USB power adapter, it lights up, and can then be toggled off and on.
That did not work for my purpose, as any power glitch or outage will turn all those lights on. So I did a little bit of a reverse engineering and hacked to make it off by default.

Before putting it back together, I took some pictures to share, in case if someone needs to do the same.

You basically have to cut the trace on top side of the PCB and throw a bodge wire on the bottom side.

Attached are: schematic diagram - the flip-flop part that does the toggling, both sides of the board with the cut and bodge highlighted. And the product itself for a reference.

[zammtronic]

This is an awesome bodge - thank you!

[Terry Bites]

IKEA is best hacked with an axe

[Bud]

Only Linux software developers can beat IKEA with weird product names 

[Nominal Animal]

Only Linux software developers can beat IKEA with weird product names 

Swedish is/was the native language of both Linus Torvalds and Ingvar Kamprad, so there you have the common root: the Swedish language.

[SilverSolder]

That is half clear! 

[cdev]

Only Linux software developers can beat IKEA with weird product names 

And the NSA, don't forget them. They excel at making up these funny, incomprehensible names. Don't you feel safer because of it?

[REDACTED]

[cdev]

Only Linux software developers can beat IKEA with weird product names 

Swedish is/was the native language of both Linus Torvalds and Ingvar Kamprad, so there you have the common root: the Swedish language.

Here in the US the Pennsylvania Dutch sect, who were originally German, I think, often speak a language that sounds a great deal like Swedish.

[mansaxel]

Sometimes the Ikea names are funny, sometimes they're on point. There's a computer table, for placing in corners, IIRC, that's named JERKER.  The Zigbee stuff is TRÅDFRI, which is literally "wireless". And so on.

[cdev]

I'm pretty sure that Jerker has been discontinued.. It was a decent ergonomic adjustable computer desk for around $100.