Knob controllers can control volume settings, scroll through web pages, and help edit movies among other uses. You can buy a commercial one from Griffin Technology for $45 or build one yourself with ...

[Mitxela]’s repair of a Roland JV-1080 (a rack-mounted 90s-era synthesizer) sounds simple: replace a broken rotary encoder on the front panel. It turned out to be anything but simple, since the part ...

Touchscreens and touchpads haven’t totally taken over the human-machine interface (HMI) function and many situations still exist where discrete switches or even the classic QWERTY keyboard remain the ...