what's your favorite gadget you own that many people probably don't?

https://www.saleae.com

It’s such a simple and well built device

I dig old computers and used bookstores. 

creating and destroying; built flying cars & autonomous vehicles, now building /faust, more here: /july, web: july.rocks

Do you use it? Do you have an example use case? Cc @whatrocks

Building https://srcbook.com // creator of the https://blockchainsmokers.xyz 

Debugging UART / I2C lines, checking to see is my software sending the actual bytes or did the data sheet lie to me (it’s actually me who misreads it usually)