A raspberry pi I bought in a NYC vending machine and left in cupboard in Faridabad, India found it’s way to Los Angles, USA in 2016. I was a little surprised, as I have also left a unopened bottle of Bombay Sapphire which was untouched.
The Raspberry Pi is a single-board computer about the size of a credit card. My very clever cousin Ankush an avid aeronautical enthusiast turned the device into a ADS–B. I had to look it up too. Apparently ADS–B determines an aircraft position via satellite navigation. He told me that to buy a commercial device it would have cost him about $800-$1000 or more. This one cost him around $140 and it including dual band, weather and traffic reports. On the ground trials produced traffic reports for a 60 kms radius but he is hoping to track 150+ when he finally gets the device on a plane.
He told me “It wasn’t a big deal. An hour. Just assembly and some tweaking. Need better spanners “!