Tacklife Cordless Screwdriver SDH13DC 3.6V Li-Ion Review
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8431 RPM Fidget Spinner – Arduino Tachometer
This was a fun experiment measuring the rotational speed (rpm) of a fidget spinner using an Arduino Uno, a hall effect sensor and a neodymium magnet. Then seeing just how fast I could make the spinner spin with a shop vac!
How to make an Led Infinity Illusion Mirror
In this article, I am going to describe how I made an LED infinity illusion mirror, using an Ikea mirror tile, a sheet of glass, some reflective window film, a reel of led strip light tape and some wood.
How to Make a Modern LED Infinity Illusion Mirror
4 Digit LED Clock Kit with Temperature – Full Build Instructions
How to make a DIY Batman LED Fidget Spinner
In this article I am going to describe how to make a fidget spinner in a Batman shape and include flashing RGB leds to give an extra wow factor.
The Batman holder is really easy to make using clay polymer and an inexpensive Batman cookie cutter. Clay polymer is based on PVC and hardens when baked. It is surprisingly durable and has a slight rubbery texture so it is ideal for this application.
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How to make a diy led finger fidget spinner
In this article I am going to describe how I made an led fidget spinner.
Spinners are something to play with instead of clicking your pen or biting your fingernails. They are surprisingly addictive and sometimes help you concentrate.
The basic construction is a housing or holder with a bearing in the centre. To use it you just hold the spinner between a thumb and finger and spin it.
I decided to make a wooden spinner, which has a nice tactile feel, and incorporate leds into it. The leds that I have used have a built-in program that changes the led colour fairly quickly, resulting in some interesting results when the spinner spins.
Opto isolated dual relay module (Arduino)
Keyes SR1y Relay module circuit
The Keyes SR1y relay module
Maximum 10A 250V AC
Maximum 10A 30V DC
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How does an Electric Relay work?
Relays are electrically operated switches, which allow a low-level electrical signal to control a separate larger electrical voltage or current.
Several types of relays are available to suit different applications, including reed relays
Relay Construction
A relay is an electromechanical device that consists of a number of parts, including the Coil, core, armature, yoke, contacts, spring and the push-rod.
