How do you build a better laser? Maybe this way.

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What type of proximity sensor is best suited to your next project? We've put together a Proximity Sensor Comparison Guide to help you choose the right tool for the job!

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Let's add some electricity to your favorite things. I take a LEGO® speeder from Star Wars® and use Arduino to give it a little something extra.

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Wherein we put several sensors through their paces against this year's course.

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I think what you would want would be closer to…

since it's hard to find the exact specs of inductor here, can i use a toroid inductor?…

One more thought on security: On TV I keep seeing the police saying to NOT leave your garage door open -- that there are criminal types that…

Great demo of cryptography, Pete, but IMHO, for most folks it's vast overkill. The typical home robery is going to be done by someone,…

Ah ok, the inductor is the issue. When you pass current through a wire, it generates a magnetic field, the more current you can pass through…

https://images.app.goo.gl/1eWBwa143gdrzjnFA inductor is like that

Do you have a link to the inductor you're using?

i use a tiny neodymium magnet, 3x12mm. the inductor is really hot, but the magnetic field is really weak. i only feel a vibration coming out…

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