Which hardware buttons, encoders and pots

#1

Hi guys! Received my Axoloti last week and had already quiet some fun with it. Now I want to make a case based on aton's design.

I would use 2 rows of 4 pots, one encoder with push button, 4 or 8 push buttons and some leds.

I don't have any experience with designing cases, so I was wondering what sort of knobs I should use. I figure they should be momentary, but besides that no clue really.

Does something like this seem good to you?
10pcs Black OFF-Momentary ON

Some general instructions or reading material on making your own case are very welcome.

#2

Momentary buttons are the most flexible option when it comes to buttons, as you can use them with a counter to cycle through all kinds of things. LEDs are best used with a latching button though. Momentary button + LED will use 2 gpio ports.

Those momentary buttons on AliExpress look ok.

Adafruit has a good tutorial on getting started with designing cases: https://learn.adafruit.com/laser-cut-enclosure-design/overview

#3

Thanks Jan! That adafruit guide is quiet useful. Any recommendations on pots and encoders?

#4

Potentiometers with knurled shafts are handy. Easiest way to add a knob.
http://www.aliexpress.com/item/Hot-10pcs-10K-Ohm-B10K-Knurled-Shaft-Linear-Rotary-Taper-Potentiometer/32570685297.html

Haven't used encoders yet with Axoloti.

#5

Can I use this buttons with leds?
Understand that need more gpios

https://lib.chipdip.ru/244/DOC000244583.pdf

#6

I have a connected question.

Can any pot be used (for instance also 50 K and 100 K) or is only 10K compatible?

And if others work. Does one have to set stuff up accordingly (and where) or does the software scan the input values and adapt itself automatically? (which would be nice)

Marc Brassé

#7

With respect to hardware integration with pots, buttons, joystick, etc. I realize that one can basically do whatever the pins allow. I am new to the axoloti world, and I have seen some images that look similar to aton's design. Personally, I like what I've seen with the joystick and what I take to be 8 encoders. Is there a specific thread on this approach somewhere that I have missed, with files that can be used for lasercutting? What about a panel that can be connected with standoffs, or even better, an entire demonstrable/instructable?

Thanks!

EDIT: I just found this thread which includes the musicthing approach to solving this problem, which I think accounts for many of the images I've seen. Does anyone have any idea what the depth should be for the standoffs? I'd like to keep it lean, and this doesn't seem to be specified in the BOM

#8

Looking at the pictures of the Axocontrol, it looks like the top board is pretty flush with the female pin headers, which are ~9 mm tall. If you're buying them individually it shouldn't be too expensive to buy a few of sizes greater than and less than 9mm.

#9

It's my bad. It was actually specified in the BOM as 11mm.
Thanks for your help!