At a certain moment in our lives all of us wanted to be a fire fighter. To simulate that effect, we created a super-awesome siren. With two 555-timer chips and lots of trail and error, we were able to create this awful noise.
We're sorry for all headphone users...
Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check our list of supported iPhone and iPad models, then follow our step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.
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