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/

The days of yore saw telex machines and dot-matrix printers with continuous feed paper churning out data in hardcopy form in offices around the world. [Jan Derogee] wanted a bit …read more (https://hackaday.com/2022/04/16/rss-printer-gives-you-the-hard-copy-news-you-desire/)

A Neat Little Tool to Reset the Fuses on Your ATtiny
https://hackaday.com/2022/04/16/a-neat-little-tool-to-reset-the-fuses-on-your-attiny/

If you’re an experienced hacker, you’ve probably run into a problem at some point and thought “let’s make a tool to automate that”. A few hours later you’ve got your …read more (https://hackaday.com/2022/04/16/a-neat-little-tool-to-reset-the-fuses-on-your-attiny/)

Taking a Close Look at Parallel Plate Capacitors
https://hackaday.com/2022/04/16/taking-a-close-look-at-parallel-plate-capacitors/

Of course, we all know that capacitors are conceptually two conductors separated by a dielectric of some sort. But outside of air-variable capacitors you normally don’t see them looking like …read more (https://hackaday.com/2022/04/16/taking-a-close-look-at-parallel-plate-capacitors/)

KiCAD Plugin Gives Your PCBs that Handmade Look
https://hackaday.com/2022/04/17/kicad-plugin-gives-your-pcbs-that-handmade-look/

The first PCBs we built involved a draftsman laying out large pieces of tape. The finished artwork would be photographically reduced to produce the board. This solved a few problems. …read more (https://hackaday.com/2022/04/17/kicad-plugin-gives-your-pcbs-that-handmade-look/)

Laptop USB-C Charging Hack Lets You Leave the Brick at Home
https://hackaday.com/2022/04/17/laptop-usb-c-charging-hack-lets-you-leave-the-brick-at-home/