Mini voltmeters are awesome

8 Oct , 2012  

a tiny voltmeter from Hong Kong

These mini voltmeters are really tiny. One of them would be a great addition to any variable power supply project.


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20W Hong Kong led vs conventional lights

29 Oct , 2010  

20W led test rig

Today I tried a 20W Hong Kong led  I found on ebay. It’s a 20 watt model, theoretically capable of putting out 1100 lumens… Unbelievable! One single 10$ led can replace conventional room lighting. See the pics.


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Underwater photos up to 12mt

3 Aug , 2009  

Off the many junk things you can find from eastern sellers on ebay, sometimes you can find some very good items. The dicapac is one of those examples: it is a waterproof case for taking underwater photos using ordinary point-and-shoot cameras. See more on


dicapack waterproof enclosure


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