Master classes:
Reciprocating saw from a drill - it is possible!
Imagine that you need to saw off a wooden block, but there are no hacksaws at hand. Favorite jigsaw on another object or even broken, and the workflow does not suffer delay. The situation is familiar to many, is not it? Most masters
100W TDA7294 Simple Amplifier
There are a lot of varieties of budget amplifiers and this is one of them. The circuit is very simple and contains only one chip, several resistors and capacitors. The characteristics of the amplifier are quite serious, with so little
Wireless LED
I will show you a way to make the LED glow without connecting wires to it. For this, it will be necessary to assemble a simple device on one transistor. And you can play friends by showing them your magical abilities.
The device for loosening the lids on the banks
Everyone uses canned goods today. Their modern version is a glass jar, closed with a tin-lid twist-off. Everyone who has ever opened such canned food knows that it is not easy to do it manually. It's all the fault of the small edges protruding from the back
Automatic lighting in the cabinets
I propose to make a really useful homemade work - the illumination of the kitchen cabinet. Just imagine, you open the cutlery drawer and the light comes on. It is very beautiful and unusual. Such lighting can be equipped with any place, whether
Prefix regulator to the power supply unit
This is a good and low-cost way to make an adjustable power supply without much cost and effort. For example, I have a good power supply unit for 12 V and 2 A. I will assemble a prefix for it, with which it will be possible to adjust the voltage
Night Vision Camera
Everyone today knows about night vision devices. In films, they are often used by superheroes to attack the enemy at night. Someone uses them as sights for night hunting. And some just like filming in the dark. how
PVC pipe compressor
A compressor with a receiver made of PVC pipe - it is really possible! Surely none of the masters will argue that the compressor in the workshop is simply irreplaceable. For these devices today there are many available tools. Yes, and economically he
Simple camping smokehouse from the pan
Personally, I made a miniature smokehouse for cooking fish on fishing. Of course, a slave can be cooked at the stake, but you can make a real delicacy out of it only with the help of this simple design.
The simplest invert without transistors
You need only two components to assemble a simple inverter that converts DC 12 V to 220 V AC. Absolutely no expensive or scarce items or parts. Everything can be collected in 5 minutes! You don’t even need to solder! Twisted
Radiator for low power transistors
Over many years of amateur radio activity, I have come across different situations. For example, you need a slightly more powerful transistor than is available.The way out of this situation is not very difficult. It is enough to add a radiator to such a transistor and
Mini electric heater 12v 80w
In this workshop I will show how to make a small electric heater that runs on 12 volts and consumes 80 watts of power. It gives a nice warm breeze which is quite enough to warm your hands. The mini heater is very
Do it yourself do-it-yourself saw
For lovers of tinkering, the miter saw is one of the most popular and required tools. Replacing the primitive miter box, it quickly gained popularity in small workshops and in large-scale production. Advantage of this tool in
Simple door alarm
The simplest alarm system will notify you of the unexpected intrusion of an unexpected guest into your territory. It is installed on the door and is triggered when it is opened. You will need only a couple of elements and the door alarm is ready.
Board Drill
To make devices for drilling boards, I do not use purchased cartridges and other parts is very simple. I have drilled more than one hundred holes in home-made circuit boards with such a drill from a motor in my time. Time spent making this
Fanless fan
With the onset of heat, we recall the fans, the simplest and most accessible human inventions for air freshening. The classic design of the fan consists of an engine, on the shaft of which an impeller with many blades is fixed. During
Greenhouse from old windows
Now everyone is trying to keep up to date and is gradually changing in their homes old wooden windows to new plastic ones. Many do not wonder what to do with old windows and just throw them away, but there are those that are still being asked. And I can
How to make a sandblast installation
For most, the term - sandblasting - is primarily associated with production. Many people know that sandblasting cleans fresh cast iron billets from scale and slag. Maybe someone saw them brushing rust or old paint with
DIY Power Bank
In everyday time, people often use gadgets (smartphones, tablets, etc.), but when going somewhere on the road, we constantly need to charge our phone. This problem will be solved by Power Bank which can be manufactured in an hour and a half from the available
How to make a twisted wire from straight
How annoying are the charger wires, which are always tangled up. It is necessary to charge the phone and put the wire in the bedside table, the next time the surprise is ready - the wire is tangled. I will show how to avoid it and make it from a regular straight wire - wire
Simple PWM controller on NE555
With the analog integrated timer SE555 / NE555 (КР1006), manufactured by Signetics Corporation since the distant 1971, most Soviet and foreign radio amateurs are perfectly familiar. It’s hard to list for what purposes not
Mini circular saw
We welcome all visitors to our site! More recently, information on some devices, such as home-made machines, etc. has appeared on our Internet resource. Today we’ll talk about another effective device - a hand-held circular saw!
Thief protection with a simple electronic key
When you need to protect an object, people come up with different methods of protection. They put padlocks, put code locks, put howlers. I decided to make my contribution to such devices. More precisely, I came up with an actuator. They, in turn, can include
How to make a 220 V generator using a 2-stroke engine
Today, stand-alone technologies are becoming increasingly interesting.And this is no accident, because for lovers of travel and leisure outside the city this is a real find, and sometimes salvation. The popularity of such gadgets is also that they can be made if not from