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Smart Chocolate Block

LABSPROJECT
Based on a Labs project | October 2011 | Find it here
What can be done, when two light bulbs in one light fitting are to be switched separately, but only one switch circuit is available? Simple: build a ‘smart chocolate block’ into the ceiling rose! The circuit is built from discrete components and with a bit of ingenuity can be fitted onto a printed circuit board measuring just a centimetre or two square.
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