Hey, I just wanted to let you know:

I’m offering a free component kit (and free shipping) for everyone who signs up for my online electronics builder’s club Ohmify.

Ohmify is a learners club with courses to learn electronics from scratch. You’ll get access to a discussion forum, roadmaps, and more than 25 courses (and more being added). [Read more…]

[Question]: I have a 3A power supply, will it break my 500mA circuit?

No. A 3A power supply will not force 3A into your circuit. A 3A power supply will supply up to 3A of current. It’s your circuit that decides how much of that current it will actually use.

(EDIT: Note that a power supply is not the same as a battery charger. Connecting a power supply with too much current directly to a battery could damage it)

[Question]: My device says 5V (DC) 1A. What power supply do I need?

You need a power supply that gives 5V DC and has a maximum current of 1A or more.
[Read more…]

Would you like to make something with a lot of connections?

For example a music amplifier?

Or a microcontroller circuit?

…then designing a printed circuit board (PCB) will make your life much easier.

It’s what will take you from knowing how to build simple circuits to being able to build advanced stuff like LCD screens, Quadcopters, etc. [Read more…]

Have you ever wondered what’s inside your mobile phone charger?

Over the last 3 years I’ve traveled to many parts of the world. This means I’ve had to replace the charger for my mobile phone and computer, or buy adapters several times.

Recently I arrived in Sydney, Australia. And I thought – maybe I should build my own charger for my iPhone? [Read more…]

I received an email from Brandon today. He writes:

[Brandon]:

I purchased your beginner course yesterday (http://www.build-electronic-circuits.com/ube-guide) […] I’m hoping to use this to bring electronics into classrooms around Denver. I’d like to have them build circuits together in small groups.

Do you have any recommendations on different circuits depending on their age? Thanks
[Read more…]

Do you have an idea for an electronics project that you want to build?

Are you stuck because you don’t know how to start?

Well then this is for you…

Whenever I take on a new project that is very different from anything I’ve ever done before, this happens:

Let’s say I want to build a RC model airplane (which is something I’ve never done before). [Read more…]

Finally, after more than a year of work, my newest book Electronics For Kids is in print.

See where it’s available: http://www.build-electronic-circuits.com/electronics-for-kids/

So far, it has been well received.
[Read more…]

Do you think it sounds fun to build advanced robots, 3D-printers, handheld game consoles, home automation systems and much more?

Well, that’s something the BeagleBone can help you with.

I’m learning about it myself, and I’ve just written a “getting started”-tutorial that you can find here:
[Read more…]

Do you remember what the colors on your resistor means?

If you said no, then we’re the same.

I never remember them, so I always have a handy table of the resistor color codes nearby.
[Read more…]

I got a pleasant surprise last week.

The Wall Street Journal wrote about my new book, Electronics For Kids:

http://on.wsj.com/28TXKsn

And they called it one of three books every geeks should read this summer. Which of course made me very proud.
[Read more…]