Do you know a kid that likes to pretend that they are a wizard or a fairy princess? How would you like to give them a toy wand that can turn on/off electronic devices like magic? You may even be able to teach them a thing or two about electronics in the process.

In this instructable I am going to show you how you can make magnetic switches that can be used to activate a circuit just like a regular momentary switch. 

Step 1: How it Works

Many electrical devices use momentary switches. They are most commonly used to set a logical HIGH or LOW state that is read by a microprocessor/integrated circuit. When working with momentary switches, you can wire multiple switches in parallel to create an OR gate. This lets any of the switches activate the device just like the original would. A magnetic reed switch can be used in this way so that the circuit can be activated by a magnet as well as the button. When a magnet is brought close to the sensor, two metal contacts inside the reed switch are pulled into contact with each other. This contact acts like a switch and activates the circuit.

Warning: Be aware that some electronics can be damaged by magnets. Keep magnets away from sensitive electronics such as cathode ray rubes (CRT's), magnetic recording devices, etc.
You can buy a harry potter wand off noble collection that does the same
<p>yea but thats not as fun as making your own.</p>

About This Instructable


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Bio: My name is Jason Poel Smith I am a Community Manager here at Instructables. In my free time, I am an Inventor, Maker, Hacker, Tinker ... More »
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