The Tech Explorations Blog

Articles about technology, learning, and making from Peter and guest bloggers

Arduino How To...

Arduino basics – How to use the potentiometer

In this post I'll show you how to use a potentiometer. A potentiometer is a device that allows you to change the value of a resistance by turning a knob....
Read More
Arduino How To...

Arduino basics – How to use the passive buzzer

A buzzer is a device that can generate simple tones, typically used to provide audible feedback to the user. Buzzers are used in alarm clocks, keypads, many household appliances and...
Read More
Course Raspberry Pi

New Course! Raspberry Pi Full Stack Raspbian

I have just published a brand new course called "Raspberry Pi Full Stack Raspbian". The new course is a remake of the original Raspberry Pi Full Stack. Since publishing this...
Read More
Electronics How To...

Your first multimeter – a simple buying guide

The multimeter is perhaps the most important test instrument in your lab. If you are just starting out, it is easy to be confused, not knowing how to interpret the...
Read More
Raspberry Pi

Raspberry Pi Full Stack: Replacing Upstart with systemd for autostarting uwsgi

In the course Raspberry Pi Full Stack, which was published in 2015, I opted for Minibian instead of Raspbian. At the time, Minibian was the best option for a minimal...
Read More
Education

What is the Learn-Test-Do approach in learning?

There are so many ways to go about teaching Arduino, or using the Arduino to tech other topics, that is impossible for me to suggest a specific path that will...
Read More
Arduino Education How To...

New to the Arduino? Here is some advice to help you get started with learning anything new

People ask me how to start learning the Arduino. Which kit to purchase? Which book or course? Which board? Which components? In this post, I'd like to answer this question...
Read More
Arduino How To...

Arduino – A dive into the fundamentals of the blinking LED

The majority of Arduino buyers purchase an Arduino kit that contains an Arduino circuit board and a few hardware parts to test and examine. The directions that come with the...
Read More
Electronics How To...

What are pull-up and pull down resistors?

A question I get asked frequently by people new to circuit design is about pull-up and pull down resistors. What is the purpose of a pull-up or pull down resistor,...
Read More
What, really, is the Arduino?
Arduino Education How To...

What, really, is the Arduino?

f you are starting with the Arduino now, you probably already have an Arduino Uno on your desk, and a few components. But, did you know that the Arduino is...
Read More