If you are electronic or electronic hobbyist in general, you have probably used testing boards (or probing JICs) on occasion. These are often used to verify electronic boards or directly program them.
There are countless of them, from manual to fully automatic and you can easily buy them in countless online stores. However, our colleague Giuseppe Finizia decided one day to design and print his own completely versatile PCB Tester simply by using acupuncture needles, some cables and his 3D printer, cheaper impossible.