Instructables user Urant decided to create a pocket-sized espresso machine that could be built using simple tools and parts from a local home-improvement store. He came up with a tiny, soldered contraption with its own tinsy winsy alcohol stove that uses a filed-down syringe to deliver a very slow drip of fuel for a boil that goes long enough to extract a single shot. It's a great design.
Design constraints are some of the most important points of any product design; they tell us what the limits are. The tighter the constraints, the more limited the design, and we have to be more creative to be able to meet them.
On this project, I set the following ones.
1- The product had to fit in the pocket of my jeans.
2- The product had to be made out with common, cheap and easily obtainable materials from any home improvement store or corner hardware store.
3- The product had to be made using simple tools that most makers would probably already have, or could easily borrow or buy cheaply.
4- The product had to be self-contained.
5- The budget was maximum 30 dollars.
Pocket size Espresso Machine with integrated alcohol stove.
Unlike a multimeter, this battery tester isn’t battery powered. Instead, it measures the voltage across the terminals of 9V, AA, AAA, C, D and 1.5V button type batteries. It’s also easier to use than multimeter probes. It’s only $6.61 on Amazon and has a 4.5 star rating with over 1500 reviews.
This handheld magnifying glass has two bright LEDs and is powered by 3 AAA cells (not included). The manufacturer says the magnification is 40X. I think it is less than that, but it is still plenty powerful for my needs – mainly, reading the markings on tiny electrical components and checking the layer fusion on […]
The European Commission is probing whether Samsung televisions’ sensed when they were being tested for energy efficiency and changed their power consumption to get better ratings than they deserved.
The Lytro Illum dares to be different, boasting even more robust features than its first generation predecessor and a sleek design reminiscent of professional DSLRs. What’s so cool about it? Most cameras capture the position of light rays, producing a statoc 2D image.
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Skip the technical jargon and get right to taking amazing, professional-quality photos with this complete training. The Hollywood Art Institute Photography Course includes 22 modules filled with tutorials on how to profit off of your photography, or simply capture your memories in the manner they deserve.Accredited by the Photography Education Accreditation CouncilDive into this 22 […]