A student once asked his lab instructor why his amplifier was oscillating. After looking at it and noting the wild construction, the instructor remarked, “A better question would be why …read more (https://hackaday.com/2021/10/29/emc-tutorial-puts-you-in-the-loop/)

Cheap Caliper Hack Keeps ‘Em Running Longer
https://hackaday.com/2021/10/30/cheap-caliper-hack-keeps-em-running-longer/

Many a hacker is a fan of the cheapest calipers on the market. Manufactured in China and priced low enough that they’re virtually disposable, they get a lot of jobs …read more (https://hackaday.com/2021/10/30/cheap-caliper-hack-keeps-em-running-longer/)

Skeleton Watches You Intensely Because It’s Halloween, Okay
https://hackaday.com/2021/10/30/skeleton-watches-you-intensely-because-its-halloween-okay/

If you’ve ever seen a painting in which the eyes follow you around the room, you might have found that a bit uneasy. [CuriousInventor] has taken that concept further with …read more (https://hackaday.com/2021/10/30/skeleton-watches-you-intensely-because-its-halloween-okay/)

Dream Bigger, Predict the Future
https://hackaday.com/2021/10/30/dream-bigger-predict-the-future/

I’d love to tell you that I’m never wrong, but I’ve been wrong a lot. Remember the Arduino? When it was brand new, I thought it was some silly collection …read more (https://hackaday.com/2021/10/30/dream-bigger-predict-the-future/)

ESP32 Internet Radio is no Game
https://hackaday.com/2021/10/30/esp32-internet-radio-is-no-game/

More than once, we’ve looked at a cool board like the TTGO T-Display and thought, “What can we build with this?” If you are [Volos Projects], the answer is a …read more (https://hackaday.com/2021/10/30/esp32-internet-radio-is-no-game/)

Modified Toggle Switches Grace Hyper-Detailed Cockpit Simulator Panels
https://hackaday.com/2021/10/30/modified-toggle-switches-grace-hyper-detailed-cockpit-simulator-panels/

In the world of the cockpit simulator hobby, no detail is too small to obsess over. Getting the look and feel of each and every cockpit control just right is …read more (https://hackaday.com/2021/10/30/modified-toggle-switches-grace-hyper-detailed-cockpit-simulator-panels/)

This Smart Watch Keeps An Eye On Ambient CO2 Levels
https://hackaday.com/2021/10/30/this-smart-watch-keeps-an-eye-on-ambient-co2-levels/

Human respiration takes in oxygen and in turn, we exhale carbon dioxide. Thus, an uptick of carbon dioxide levels around us can indicate we’re in the presence of other humans, …read more (https://hackaday.com/2021/10/30/this-smart-watch-keeps-an-eye-on-ambient-co2-levels/)

Handwriting Robots are Sending Snail Mail
https://hackaday.com/2021/10/30/handwriting-robots-are-sending-snail-mail/