4x4 Universial 16 Key Switch Keypad Keyboard For Arduino

Cheap, cheerful ... and fully-functional!Unlike reported in some purchaser reviews, the product that I received fully works.Correlating buttons to connector pins was simple - with the connector hanging down, the leftmost 4 pins address the button rows, and the rightmost, the button columns.Simple to use.

Works like meant to

The keypad works fine for what I want. The description wasn't clear but it's a thin keypad with a sticky back adhesive for securing it. The keypad layout was very different from others I've used, so it will take some working out to get the pin out correct.

Does what it says on the tin, easy to use and you can't complain at the price.

Disnt work. Number 6 was unresponsive. Poorer quality than the ones you get in the original kits.

Lacks "feel" but works perfectly. Gives my CNC machine a workable keypad input.

Quite flimsy, am guessing you get what you pay for - as only half the keys worked 👎

Only one line of keys worked