“Why isn’t my 555 timer circuit working?!” Avoid these four common pitfalls!
Companion video for The Ultimate Beginner’s Guide to the 555 Timer, Chapter 7: Audible Anarchy
Companion video for The Ultimate Beginner’s Guide to the 555 Timer, Chapter 1: Breadboard Basics
Build the Atari Punk Console and Other Breadboard Electronics Projects. Plus, a complete parts kit!
A quick and dirty (and cheap) MIDI tester.
(update) I inadvertently said I got the 4 conductor plug at Jameco – it was Mouser, and is listed correctly, with the part number in the blog. Have you ever wanted to plug in a professional studio mic to your iPod touch/iPhone? There may be a commercial solution, but I…
It takes lots of experimenting to find the right values of the parts.
This is one of the simplest designs of audio amp I’ve found. Can be built for a couple dollars!
I get a lot of e-mails asking about hooking up patchbays to bend points. Here are a couple different methods. Remember – you can expand these ideas across multiple patch panels, hook up switches and pots in between, etc. A) In this method, each RCA jack is wired/soldered to an…
This is for a large 20 key keypad, but the theory works the same for smaller keypads. You can use an ohm meter to see which rows & columns get connected with each button press.