TRANSFORMERLESS UNINTERRUPTIBLE POWER SUPPLIES (UPS)

Wall clock powered by the aforementioned power source

Portable electronic devices with low-voltage power supply are often designed for batteries and accumulators. Among such devices, the most popular are electromechanical and digital clocks, radio receivers, flashlights, and… wireless doorbells operating on a radio channel at a frequency of 303 MHz (there are variants at 933.25 MHz). Digital cameras with a connector for external Read more…

Double-IZh

Fig. 1. Duplicate IZh engine by A. Antipin.

When building amateur aerosleds, gliders and hovercraft, the greatest difficulty is usually choosing the right engine. Standard production engines often fail to satisfy home‑builders in many respects, particularly in terms of specific power. The most radical way to solve this problem is to build homemade engines using parts from serial motorcycle engines. Readers of “M‑K” Read more…

ECONOMY LADDER

Economical Attic Staircase DIY: Complete Step-by-Step Guide

If a country house or rural home has a high roof — it’s a sin not to take advantage of such an advantage and not to arrange an attic there: it can serve as an additional bedroom, study, and even a children’s room. The under-roof space itself can be equipped both during construction and in Read more…

Compact folding table

Drop-leaf Ash Table DIY: Drawings & Step-by-Step Guide

Drop-leaf tables have been known for a long time and they are consistently in demand because they take up little space. But buying a table of the right size in a store is not always possible, so you often have to rely on your own hands and ingenuity. The proposed table is made of ash. Read more…

The spray can will still be useful

DIY paint roller made from an aerosol spray can

No matter how much humorists joke about repurposing items that have served their purpose, a DIY enthusiast’s soul won’t allow them to throw away something that could still be useful around the house. I’d like to share such an experience of using an empty aerosol canister. Indeed, it’s a pity and not rational to throw Read more…

Rakes with wheels

DIY Wheel Rakes for Hay Collection: Instructions

Ordinary hand rakes for hay collection are an ancient tool familiar to every rural resident. As a rule, all parts of this tool are made of wood to make it lighter—after all, you have to hold it almost always in the air during work. The width of hand rake capture is small, and accordingly, productivity Read more…

Garden water carrier

Cart for Water Container: Garden Irrigation Solution

Every gardener knows how difficult it is to bring water for watering beds or trees during dry periods. Many use large tanks or bidons with a capacity of 35—40 liters, mounting them on carts. But lifting and removing such a bidon is far beyond everyone’s strength. The design of a cart I made significantly facilitates Read more…

Making concrete ourselves

Fig. 1. General view of the concrete mixer

A concrete mixer is not needed by everyone. But it will certainly interest those who are planning to build something on their homestead or are already building. The design of the proposed concrete mixer is simple and accessible for replication. It uses fairly common components and parts. However, it can be assembled from other available Read more…

Shovel with a “twist”

How to Make a Durable Dustpan: DIY Guide

A dustpan for cleaning up trash—it would seem, what could be simpler. But no, even this elementary product has its problems. Stores sell plastic dustpans (one-piece stamped) and ones with a metal scoop and wooden handle. Neither type is particularly reliable: they break at the bridge where the handle joins the vertical back wall of Read more…