Fixing the network performance of a very specific laptop wifi chip pretty easily (especially for NetworkManager).

Currently the best approach on my Lenovo is the parameter set:
modprobe rtl8723be fwlps=0 ant_sel=2 ips=0 swlps=0 swenc=0 disable_watchdog=0

But it also worked with other configurations and does not seem stable. Some suggest turning swenc and swlps on for better perfomance.

Explanation of options here

Open-source smartwatch that is fully arduino programmable (run by an ESP32), usually lasts 5-7 days and costs around $50.

Quite a few watchface examples exist online. From what I understand, the watchface is the firmware for this clock,
so no too easy changes there.

There are assembly kits with a case that can be bought for some $ more that will keep the watch a bit more safe (though not e.g. swimmingpool ready). The watch/display so far only exists in square shape.

A huge array of tutorials focusing especially on ESP32 - explanations of working with different sensors (magnetic, light, touch, temperature and humidity, ...), different protocols (http, mqtt, ...), and larger guides like a cloud weather station.

Super comprehensive overview of everything Esspresif ESP32.

Datasheets, guides, books, tutorials, inspiration, code snippets -- literally everything you could need for programming with ESP32s.

A comprehensive beginner's guide to setting up Arduino programming from vim and the commandline.

Starts with sample blink program, with classic Arduino board,
but quickly moves on to usage with an ESP8266 (so, easily adaptable to ESP32 boards) and with an included library (in this case Adafruit Neopixels).

An extensive introduction to all things Arduino and circuitry - goes through setting up and using Arduino, various electrical components, foundations of electrical engineering, analog parts, communication with computers, and more.

An amazing little diy arcade machine and the building process simulating your working day in an Amazon warehouse.

This is the Free Software Foundation (FSF) guide to smarter gift giving, compared with their restrictive counterparts.