Category Archives: vacuum

A Freeze Dryer You Can Build in Your Garage

What do trail mix, astronaut ice-cream, and cryogel have in common? This may sound like the introduction to a corny riddle, but they are all things you can make in your garage with a homemade freeze dryer. [The Thought Emporium] built his own freeze dryer with minimum fuss and only a few exotic components like a vacuum pump and a high-quality pressure gauge. The video is also posted after the break which contains a list for the parts and where they can be purchased.

Freeze drying uses a process called cryodesiccation or lyophilization. Below a certain pressure, water skips the …read more

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Posted in cryodesiccation, cryogel, dehydrate, freeze-dryer, how-to, lyophilization, pump, tool hacks, vacuum | Leave a comment

Alan Yates: Introduction To Vacuum Technology

When we mention vacuum technology, it’s not impossible that many of you will instantly turn your minds to vacuum tubes, and think about triodes, or pentodes. But while there is a lot to interest the curious in the electronics of yesteryear, they are not the only facet of vacuum technology that should capture your attention.

When [Alan Yates] gave his talk at the 2017 Hackaday Superconference entitled “Introduction To Vacuum Technology”, he was speaking in a much more literal sense. Instead of a technology that happens to use a vacuum, his subject was the technologies surrounding working with vacuums; examining …read more

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Posted in 2017 Hackaday Superconference, alan yates, cons, Hackaday SuperConference, hardware, Superconference, vacuum, vacuum technology | Leave a comment

New Brain for Smart Vacuum

The ESP8266 has found its way into almost everything now. With its tiny size, low price tag, and accessible programmer, it’s perfect for almost any application that requires WiFi. [HawtDogFlvrWtr] decided that will all of the perks of the platform, an ESP8266 was practically begging to be shoehorned into his automatic vacuum cleaner. This isn’t a Roomba, though, it’s a Neato that now has a custom WiFi interface.

The new WiFi modification comes with some additional features as well. First of all, it ditches the poorly designed default user interface (often the most annoying proprietary component of any consumer product). …read more

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Posted in ESP8266, Neato, user interface, vacuum, wifi, wireless hacks | Leave a comment

High Vacuum with Mercury and Glassware

If you want to build your own vacuum tubes, whether amplifying, Nixie or cathode-ray, you’re going to need a vacuum. It’s in the name, after all. For a few thousand bucks, you can probably pick up a used turbo-molecular pump. But how did they make high vacuums back in the day? How did Edison evacuate his light bulbs?

Strangely enough, you could do worse than turn to YouTube for the answer: [Cody] demonstrates building a Sprengel vacuum pump (video embedded below). As tipster [BrightBlueJim] wrote us, this project has everything: high vacuum, home-made torch glassware, and large quantities of toxic …read more

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Posted in cathode ray tube, chemistry hacks, classic hacks, edison, nixie, pump, tube, vacuum | Leave a comment