IKEA Kortlinje Clock Offers an Accessible LED-Matrix Hacking Target
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The IKEA Kortlinje is a roughly $20 digital clock with a white LED-matrix display, thermometer and hygrometer. A hardware teardown found three VK1640 LED controllers, an unidentified microcontroller paired with a 32.768 kHz watch crystal, and an unmarked chip whose role is still uncertain; it may relate to I2C switching or the sensors. The report says the microcontroller can be desoldered and replaced, potentially giving a hobbyist control of the display drivers and I2C-connected functions. Early activity includes a RevSpace hackerspace post and an initial firmware effort on GitHub by VIPnytt. The device is therefore an emerging modification project, not a demonstrated, mature platform: the mystery chip has not been identified, and no completed custom firmware or broader capabilities are described.
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The IKEA Kortlinje is a digital clock that costs around 20 dollars, featuring a hygrometer and thermometer. It’s another cheap appliance, you might think, were it not that the display is a white LED matrix. Best of all, with three VK1640 LED controllers, it has hacking potential. You’re in at the ground floor if you hack one of these, but so far we’ve seen a post from the RevSpace hackerspace in the Netherlands, and the first glimmerings of a firmware on GitHub from [VIPnytt].
We have one on the bench here, and cracking it open we find the three LED drivers, an unidentified microcontroller with a 32.768 kHz watch crystal, and a mystery chip nobody’s yet identified that may either be some kind of I2C multiplexer or have something to do with those sensors. Neither has any markings, so no help there. The hackability comes in the relative ease of desoldering the microcontroller and substituting your own. In which case with access to I2C and the LED drivers, you can make it do your bidding.
This thing is part of a rich tradition of hacking IKEA products. Perhaps one of our favorites is the use of bowls from the Swedish furniture giant to make a telescope mount.
Source: Jenny List ·Hackaday · 2026-10-10T08:00:36.000Z · Read the original article
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The teardown identifies accessible display-control hardware and early community firmware work, but the chip functions remain uncertain and no completed hack or verified capabilities are reported.
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- gpt-6-luna-2026-09-22 · 44
The teardown identifies accessible display-control hardware and early community firmware work, but the chip functions remain uncertain and no completed hack or verified capabilities are reported.
- deepseek-flash · 58
Concrete teardown of a $20 IKEA clock with VK1640 drivers and a replaceable microcontroller, but hacking evidence is early: a hackerspace post and initial firmware only, with two chips unidentified.
分析时间：2026.10.10 10:12 UTC
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