To anyone who tinkers with digital electronics and micro-computers, a logic analyzer is a great tool to have. Unfortunately they used to be quite expensive. Nowadays … no more. This tiny, 8 channel, 24MHz sample rate, USB module can be had for as little as €4,- from e.g. Aliexpress.
Combined with the free open source ‘sigrok / pulseview’ software it makes for a very capable and fun to use logic analyzer that anyone can afford. Downloads are available for many platforms: https://sigrok.org/wiki/Downloads
The video shows how to get this duo to work as well as some of the features of the software.