Category Archives: Uncategorized

Improving fridge thermostat

Since some time my fridge’s thermostat started to work erratically, so I decided to replace it. But, you know, do it in a normal way: go to the spare store, buy a new one, and replace it (2 hours top) … Continue reading

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Religion is dangerous

“Religion is dangerous because it allows human beings who don’t have all the answers to think that they do” Bill Maher

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How to keep fresh basil, parsley and others vegetables

I use to grow some plants (wink, wink), sometimes from seeds, sometimes cloning. To make a clone basically you cut a branch, put in water and wait until it grow roots. Because during the process the plant doesn’t have roots … Continue reading

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High Altitude Balloon – First test

Great night!… I just finished the first integration test of my High Altitude Balloon project, and worked perfect! This afternoon a put all pieces together (well… if we can say that), and test almost everything but get a GPS lock. … Continue reading

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Dirty Power On

I think my high altitude balloon is consuming a lot of (my) resources. But well… another hack related to the same project. My primary communication channel is over UHF, modulating in FSK. But I cant rely in just one communication channel. So … Continue reading

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High Speed Photography

I like photography, and as geek a like to take “tech” photographs. High Speed Photography is one of those. A classic is water balloon exploding, but to freeze the moment when the balloon is exploding we need to understand the … Continue reading

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Pyrotechnic Release Device

My high altitude balloon needed a reliable and lightweight device to release the balloon in the case it remained neutrally buoyant. I saw some implementations with a nichrome wire (melting the rope), but I don’t like it: too much current, big MOSFET, another battery pack. … Continue reading

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