Tech Explorations Blog

News and articles about education technology

How to drive DC motors with your Arduino

In the picture above, from left to right: The L298N motor driver, the TIP122 Darlingthon transistor, and the DRV8871 motor driver. Any DC motor can be driven with PWM signals. Whether it is a miniature 3V motor for toys, or a large 12V or 24V motor for your lawn mower, the principle of...
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Kicad - Interactive routing

This blog post is a small section of a new book I am writing. I don't have a book title yet (feel free to suggest one). The book will be a comprehensive guide to Kicad and will cover an extensive array of learning outcomes. The book will cover contain multiple projects to help explain...
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Stemiverse 0043 - Dr Melina Uncapher bridging neuroscience and technology

Welcome to Stemiverse Podcast episode 43. In this episode, Dr Peter Dalmaris talks with Dr Melina Uncapher! Sorry, your browser does not seem to support the audio player. Please consider upgrading to the latest Firefox, Chrome or Safari browser. ...
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So, you want to be a Maker? What's the plan?

Being a Maker is a bit like being a decathlete. A decathlete is an athlete who competes in ten different track and field events. Imagine you are preparing for the Olympics or your regional athletics competition, and instead of just training and drilling in High Jump, you prepare for the 100...
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Dealing with false triggers from a PIR sensor

The PIR sensor is very sensitive and is known to be creating false triggers, i.e. it will occasionally go LOW to indicate that there is no movement, even though there is movement. There are two things you can do to create a more reliable detection system (and this can deliver the functionality...
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Introducing our new 3D design & printing course

As Makers, we always find ourselves in looking of things that make our projects better. It could be an enclosure for your electronics project with cable and sensor opening at exactly the right spot. Or a replacement part for a drone. Or little things that make life easier, like a hook for your...
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Meet Genomics Superstar Rebecca, and Super Dad Nigel

On Stemiverse Podcast, we interview extraordinary people from around the world who, in their unique way, are forces of good. Our guests tend to have a lot of common traits, but two, in particular, stand out: They are ready to learn real-world skills They are prepared to help others in...
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The difference between unipolar and bipolar stepper motors

The unipolar stepper motor operates with one winding with a center tap per phase. Each section of the winding is switched on for each direction of the magnetic field. Each winding is made relatively simple with the commutation circuit, this is done since the arrangement has a magnetic pole which...
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Stemiverse 0042 - Ruthe Farmer on increasing girls’ participation in technology and engineering

Welcome to Stemiverse Podcast episode 42. In this episode, Dr Peter Dalmaris talks with Ruthe Farmer. Sorry, your browser does not seem to support the audio player. Please consider upgrading to the latest Firefox, Chrome or Safari browser. Ruthe...
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Stemiverse 0041 - Dr. Rebecca Johnson and Superstar genomics

Welcome to Stemiverse Podcast episode 41. In this episode, Dr Peter Dalmaris talks with Dr Rebecca Johnson. Sorry, your browser does not seem to support the audio player. Please consider upgrading to the latest Firefox, Chrome or Safari browser. ...
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