Hi is there someone that wants a solution to this?
#Potentiometer with switch
thick prism
shrewd drum
@thick prism how is it supposed to work once its mounted in an enclosure?
thick prism
You bale in the part nearest to the shaft. so it becomes a part of the enclosure
shrewd drum
so your enclosure is supposed to flex?
thick prism
no no only the potentiometer 🙂 there is some "pushback" from the button. the putton acts like a spring in this case.
shrewd drum
so you're not actually securing the pot to the enclosure
seems like that would add some unwanted compliance
thick prism
only if you press extreamly hard 🙂
tbh just tried to press it out right now with force and its still put and working
shrewd drum
i really meant rotational compliance
since it cant really be as super snug fit to the pot so that it can move up and down is bound to leave some wiggle room in the rotational axis
thick prism
yes about 0,5mm
shrewd drum
I kinda feel like something like this would be a simpler solution and would eliminate any rotational compliance
thick prism
sure. but then you need a rail under the "face plate" for the buttons to sit on.
And then you have to take acount for the wear and tear of the flexing bit of the plastic that will snap one day
But looking at your picture made me think of.... How about we add a captive button in the knob 😛
shrewd drum
id rather have to reprint the face plate once every 5 years than deal with slop every time i adjust the volume. an even better solution would be to use a multi-filament printer and use tpu in the gap
shrewd drum
But looking at your picture made me think of.... How about we add a captive butt...
that would actually be a pretty good idea. since the shaft is conductive you could put your wire for the capacitive button pin to it and have a small metal pad on top of the knob
thick prism
hmm are we on to someting? 😛
shrewd drum
just tested an extra pot i have laying around and the shaft doesnt have continuity to any of the pins so it might be plausible
thick prism
ooh the smallest captive board i find is 15x11mm...
shrewd drum
you dont necessarily have to have a board. some mcu have the capacitive function on some of their pins so all you need is a wire
thick prism
realy?
shrewd drum
i have an adafruit qtpy samd21 board that has 6 x Capacitive Touch with no additional components required
so just a wire to the shaft of the pot and something like these recessed into the top of the knob making contact with the shaft
https://www.amazon.com/uxcell-Stainless-Circle-Stamping-Jewelry/dp/B0DR2PB63J/ref=sr_1_29?crid=3ELMNBKMZBIID&dib=eyJ2IjoiMSJ9.MH6LcEJ9ey2wnVx1ofYWA6NHCaKCW-Elc45z9VylDAvpzCQOUiLyEQInPf2PuEXmTXx_0zAEkNOXn7vWycmTgH_bV6BoMRaVga3raxTmRxHAesdRd7K3DurkvXntKJeJnOqKKcnnlEF0AABPhQvdd5M7mL6HK8w_Z4OguZMKmwrWNM8yIHJdE6oFRbomeq-9NeS7qIf-nfip0QmcIqL9-0_ATgPzwg3_6SFeZRmYf0On65nWXG84Q4QjjfKecC_6TbO16HRWNxw7j8WYnLSm4RsZLdFfnlnd0QV6OTxAcaE.MUW8hEwdNiwmbiU36u00BDNrr0VqiZ88BYzupvGiAwA&dib_tag=se&keywords=metal%2Bdisc&qid=1762077577&sprefix=metal%2Bdisc%2Caps%2C188&sr=8-29&th=1
thick prism
thats actully pretty cool
i wonder if there is any cheap nano with those functions
my esp has it to i think
thick prism
just tried a simple test. to bad it dont goes through 1 layer of plastic
we would need like a plastic spring inside the knob to make a small "flex"
shrewd drum
i have to use a specific library to enable the capacitive sensing