Circuit ideas are everywhere! There are many places to find cool circuits.
The greatest sources for my inspiration are hacker/maker/electronics blogs, schematic webpages, hobby project pages, and open-source hardware companies.
Or you can also check out some electronic kits for inspiration.
Sometimes I just want to try to replicate an electronic circuit I’ve found on the web. Either because it is something I need or just to prove to myself that I can do it. Like this amplifier circuit diagram.
Sometimes I find something cool that I want to modify and improve on. And other times I get completely new circuit ideas out of the blue that I want to build.
Articles about electronic circuits

The image above shows the PCB of a radar sensor I was involved with. Read about cool radar circuits here.
or
Read about my electronics project turning an old radio into an iPhone dock
Read about the huuuge recycling machine we built.
Read the story of the first circuit I built.
Read about 5 Cool Circuit Ideas.
Read about Brainstorming Techniques.

Build Something Useful This Evening
This gadget lets you use any IR remote-control to control your lamp, garden lights, heater oven, garage door, or anything else.
Sources of Inspiration
Interviews
- SparkFun Electronics
- Massimo Banzi (co-founder of Arduino)
- Seeed Studio
- Alexander Weber (from Tinkerlog)
- Daniel Garcia (from Protostack)
- Chris @ Pyroelectro.com
Electronic blogs
Blogs aimed at hackers/makers/hobbyists are my daily news. Instead of reading the “normal” newspaper like everybody else, I make myself a cup of dark roast coffee, sit down in my favorite chair, power up my iPad’s RSS feed reader and tune in to the latest electronic circuit news. I usually find several circuit ideas. It really makes my day =)
Here are some of my favorite blogs.
Online electronic shops
Sometimes, just browsing online shops like Sparkfun, Seeed Studio or Adafruit gets me inspired to build new circuits. Maybe I find a really small and cheap WiFi module. Then I start thinking about a problem that I have and realized that with this WiFi module, I can solve this problem! Boom! A new circuit idea.
About two years ago I was very active on Twitter. I found out that some cool electronics people were tweeting, so I followed them.
It was not long before I had to quit. I was finding so many cool articles I wanted to read and circuits that I wanted to build, but I didn’t have time for any of that. So I just had to stop my Twitter career. I couldn’t get anything done. (But now I’m back on)
So if you need inspiration, Twitter can be a very good source of that.
Electronic forums (Show and tell)
Ohmify, our platform with electronics courses and community, has a “Show and tell” section where people show what they have built. You can find many interesting circuit ideas with schematics here.
Circuit pages
There are many talented people around the world who creates incredible stuff. And with a bit of searching, you can find many pages dedicated to the personal projects of these people.
Setting up your circuit ideas for success
Inspiration and new ideas are great! But it gets even better when you actually complete a project. Therefore, I will end with a note on finishing your projects. I have started many projects that I never completed. How can we avoid this?
Goals
Over the years I have learned that a clear goal is crucial to complete the projects I start. Do I only want to create a circuit board and confirm that it works? Or do I want to create a finished, usable gadget that I can put in my living room?
By clarifying your goal you can see how much work is left on the project and you know when your project is complete. A clear goal can be “I want to create a complete stereo amplifier with a volume knob, a connector for audio input, and connectors for the speakers”
Read more about SMART goals.
Motivation
Motivation is also very important. This is what makes you actually prioritize working on the project. Motivation is highly individual. Some are motivated by the “cred” they will receive from their impressed friends when they show off their circuit. Some are motivated by the learning opportunities of the project itself. What motivates you?
Read more about planning your project to be able to build electronic projects much faster.
More Circuits & Projects Tutorials

Build Something Practical This Evening
Download this tutorial that shows you step by step how to build an old-school USB charger for your mobile.
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If you or someone you know plays an electric guitar, I have a schematic that allows a guitar player to play their guitar through their home stereo, using the RCA line inputs.
difference bet step up and step down
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