How to make a test pen for all electronic circuits and connections?

What happened to the animals of the Peace Forest_

The Great Forest Adventure

The legendary historical jungle race of wisdom and speed.

These equipments and tools must be made by yourself.

How to make a super unusual battery powered ring light?

The wonderful peltier. Extreme cold and high heat. Many uses.

DC motor speed control.

Make a 12 volt 12 amp battery using lithium ion batteries.

4 Creative Ideas and Tricks from Another World

Make your own 12 volt 9 amp battery using lithium ion batteries.

How to make a test pen for all electronic circuits and connections?

Make RPM device to know the number of revolutions of a motor

How to make an emergency light using lithium ion batteries?

Make a touch test pen for all electronic circuits?

How to repair power supply easily

Make drum and disk sander 45/90 °

Electric piston press 10 tons

Battery with multiple outputs . Different voltages for many uses

CNC router for engraving and drawing on wood. Mounting clamps accessories

CNC router for engraving and drawing on wood. Wood dust Extractor accessories

How to light a 3 volt LED from 12 volts

10 ton electric press for many uses. Excellent handmade

portable air conditioner 12 volt very practical using a peltier

Small stove. How to make a small stove using simple tools