Calculating Pi On the 4004 CPU, Intel’s First Microprocessor
https://hackaday.com/2022/04/15/calculating-pi-on-the-4004-cpu-intels-first-microprocessor/

These days we are blessed with multicore 64-bit monster CPUs that can calculate an entire moon mission’s worth of instructions in the blink of an eye. Once upon a time, …read more (https://hackaday.com/2022/04/15/calculating-pi-on-the-4004-cpu-intels-first-microprocessor/)

Paper Tape Reader Self-calibrates, Speaks USB
https://hackaday.com/2022/04/16/paper-tape-reader-self-calibrates-speaks-usb/

Input devices consisting of optical readers for punched paper tape have been around since the earliest days of computing, so why stop now? [Jürgen]’s Paper Tape Reader project connects to …read more (https://hackaday.com/2022/04/16/paper-tape-reader-self-calibrates-speaks-usb/)

Tiny Pneumatic Tool Made from a Single(-ish) Bolt
https://hackaday.com/2022/04/16/tiny-pneumatic-tool-made-from-a-single-ish-bolt/

We’ve noticed a couple of things about the “Widget from a Single Bolt” genre of metalworking videos. The first thing is that almost all of them need to use a …read more (https://hackaday.com/2022/04/16/tiny-pneumatic-tool-made-from-a-single-ish-bolt/)

Easy, Extensible, Open
https://hackaday.com/2022/04/16/easy-extensible-open/

I’m a huge DIY’er. I don’t like to buy things when I can build them myself. But honestly, that doesn’t always end up in the optimal allocation of my time, …read more (https://hackaday.com/2022/04/16/easy-extensible-open/)

IoT Pool Monitor Helps You Keep It Crystal Clear
https://hackaday.com/2022/04/16/iot-pool-monitor-helps-you-keep-it-crystal-clear/

Pool Interface, ESP32 prototype
" data-medium-file="https://hackaday.com/wp-content/uploads/2022/04/opnpool-proto-e1649990296933.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2022/04/opnpool-proto-e1649990296933.jpg?w=800">Having a pool is great, but it also requires significant monitoring and maintenance to keep it crystal clear and clean. The OPNpool controller from [Coert Vonk] aims to help in …read more (https://hackaday.com/2022/04/16/iot-pool-monitor-helps-you-keep-it-crystal-clear/)

Can You Help Solve the Mystery of This 1930s TV?
https://hackaday.com/2022/04/16/can-you-help-solve-the-mystery-of-this-1930s-tv/

84 years ago, a teenager built a TV set in a basement in Hammond, Indiana. The teen was a radio amateur, [John Anderson W9YEI], and since it was the late …read more (https://hackaday.com/2022/04/16/can-you-help-solve-the-mystery-of-this-1930s-tv/)

RSS Printer Gives You The Hard Copy News You Desire
https://hackaday.com/2022/04/16/rss-printer-gives-you-the-hard-copy-news-you-desire/