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A 555-Shaped Discrete Component 555

While the “should have used a 555” meme is strong around these parts, we absolutely agree with [Kelvin Brammer]’s decision to make this 555-shaped plug-in replacement for the 555 timer chip using discrete parts, rather than just a boring old chip. As [Kelvin] relates, this project started a while back as an attempt to both

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How to create a PDF on iPhone

Macworld You can turn any type of document into a PDF on iPhone in seconds, and since the functionality is built into the Share option you don’t need third-party apps to get started. Here’s how to convert to PDF on iPhone or iPad. For most documents (web pages and more) you can chose the Markup

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