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The ancient but remarkable Archimedes screw, which operates in water lifting mode, is usually driven by an external energy source - muscle or engine. I designed a screw equipped with a special impeller located on the same shaft and…
Several different holders that allow you to attach a variety of things to the DIN rail. For all the parts, I used PETG. If possible, arrange the parts on the bed so that the layers of plastic in the places of bending parts, during…
In the design of this screwdriver with replaceable bits of the 6.35 mm standard, I used M6 nuts and a metal ring, this allows you to use the screwdriver applying high torque without damaging the screwdriver handle. The metal ring is a…
This multi-holder attaches to any solid base using a standard clamp. Its use will make it easier to organize a workplace for repairing and setting up electronic equipment in any place, even the most inconvenient one. Rubber gaskets must…
There are two ways to observe the remarkable Dzhanibekov effect with your own eyes. 1) fly to a space station or 2) throw a tennis racket or smartphone, etc. The first is not available to everyone, the second is low-information, lasts…
With this demonstrator, you can measure and feel the weight of ordinary objects as if they were on other planets, the Sun, or under some kind of overload. The operating principle is based on the condition of equality of moments of forces…
STL files contain various whole numbers and individual segments. The slicer makes it easy to resize the numbers. Video https://www.youtube.com/watch?v=BFt7jFbAg84 Category: Learning
Using a cheap, widely used PIR Motion Module HC-SR501 sensor, you can make a barrier sensor that will control a load (one or two lamps or a fan, etc.) in a bipolar mode (when each subsequent sensor response switches the lamp to the…
For those riding scooters or bicycles at night, reflective elements on clothing are very useful for safety. The magnetic fastener I used doesn't damage clothing fabric, which is important for preserving the waterproof fabric of a…
This safe can hold a can of coffee, a box of chocolates or nuts, a piggy bank with coins, and similar items. The safe is equipped with an electric combination lock made from a seven-segment display. The lock latch is driven in a…
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