Here’s a tiny teaser

Some basic electronic components drawn as cartoonsToday I built an electronic code lock.

And man, am I tired now.

The code lock is for a new project I’ve been working on since the beginning of this year.

I have briefly mentioned it earlier, without saying what it is.

I’m very close to completion now, so I guess I can say a bit more about it:
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Un transistor, por favor

components2-enhancedI got my pocket full of components.

Ready for my weekend project!

In the middle of Medellin in Colombia, I found a small shopping centre with lots of stores with components and tools for building electronics!

My Spanish is not very good.

Which can be a bit frustrating at times.

But I’m learning. [Read more…]

Radars can see through walls

Arduino radar on a breadboardNo, you won’t get a proper picture of whatever is behind the wall.

That would be pretty scary!

But you can see that someone is breathing behind the wall. You can see where they are.

..and if you know a bit about beamforming, you can combine several radars and build a simple silhouette of what is there.

A radar used to be huge.
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Arduino Radar Tutorial: Fading an LED With My Breath

Arduino radar project on a breadboardI built this Arduino radar project, where I control the brightness of an LED with my breath. In this tutorial, I will show you exactly how to do it.

It was an experiment to get the XeThru radar to work with Arduino. I plan to expand on this later, and build more useful applications.

And I will share with you how to connect the hardware, and how to create the Arduino code.

Just to be clear: This is not a sonar pretending to be a radar. This is a radar. With electromagnetic waves.

[Read more…]