B3F-4055 switch bounce

[Demon]

...The Fnirsi I guess is either for the recycle bin or has some settings to smooth out the ripple so much that looks like a perfect rect wave....

It's a toy to help teach electronics, nothing more. I'm starting my first return to AliExpress, along with those 3 DMMs that I tried out. I'll see how that goes.

EDIT: I was wrong about this device (next post).

...The SR25 switch, depending on their oxidation state, since the contacts are very much exposed, is normal to have such a behaviour.

Ioannis

This one is brand new though; straight from the manufacturer 2 months ago.

Turns out this was caused by me touching the metal shaft. As soon as I installed a knob, that erratic bounce has mostly gone away. There's still a slight bounce, but nothing so drastic.

It did show to me though that the chinesium scope is useless to analyse signals adequately.