Tested cheap gamepads today that are available on several websites (including ZXSpectrum.shop) on a couple of joystick interfaces.
Works great!
The remark at the end of the video about potentially shorting 5V to ground does not apply: the gamepad works well on all interfaces I tested, including DivMMC EnJOY! interfaces with integrated joystick port that have 5V on joystick pin 7.
Here’s the video: https://www.youtube.com/watch?v=QfKejHoxcps
