Okay, I’m obviously sleep-deprived at this point, because this actually looks pretty cool to me. The picture pretty much explains everything: you snap a 9-volt onto this LED attachment, and ta-dah, ...
Drumroll please……. We are happy to announce that after much anticipation on the part of Inhabitat readers, Richart Lawson’s in-demand 9Volt Battery LED Lamp has ...
This is a very simple 9V low battery indicator circuit which has 2 LEDs, one green which will light up when the battery voltage is higher than 6.9 volts and one red LED which will light up when the ...
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