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IKEA make a variety of completely different lamps, together with helpful motion-sensitive fashions that may click on on once you stroll previous. [Andrew Menadue] trialed one as an evening mild, nevertheless it was far too vibrant for the duty. It additionally would come on through the day time, losing its treasured battery life when it wasn’t wanted. Thus, in order to mold the lamp to its new purpose, hacking ensued.
Step one, because it so usually is, was to crack open the case and look inside. Preliminary inspections revealed a BISS0001 chip — a easy passive infrared movement sensor. The chip has a perform inbuilt that may disable the output from triggering if it detects mild. Including a light-dependent resistor and an extra 100K resistor was all that was wanted to allow this function.
Now, the lamp solely kicks on if it detects movement at evening. Some additional tweaks additionally minimize the present restrict to the LEDs, lowering the brightness to a extra appropriate degree for evening time. [Andrew] now has a helpful evening mild that fits his wants, and likes it a lot that he as soon as drove 150 miles to recuperate one which he left behind on trip. That’s dedication!
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