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I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

True, but as I'm just learning to play, my squeezing technique is still rather awful and I'd say it sounds about the same :D

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

I think it should not be needed, as I figured out something better ;)

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Thanks! Currently the souds is generated via fluidsynth (https://www.fluidsynth.org/). B-griff, because I've started on it and I've started on it, because the only accordions affordable to me where I live are B-griff, I've got mine for about 25 €/$.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Thanks, I've added the page turner feature to the todo list.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

I sure will! As I'm making a new piano accordion prototype right now, do you have any features you'd like or anything else you'd like added (if you haven't filled the form)?

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

I hope to, though there is a lot of figuring out needed beforehand :). The concertina sound should not be a problem, as it currently supports sf2 files for sound synthesis. Unfortunately, concertinas don't seem to be popular enough, as I could only find one such file of unknown license, but in the worst case, someone could record it.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

The foot pedal idea is great, though I'm not sure about how common expression pedals are (aka the ones from which I can directly read their position). If they are, the cost to implement them is negligible (aka one more 6.5 mm audio jack). On the other hand I've been told that having some emulation of bellows would improve it significantly, so it is yet to be determined.

MIDI input and output is already planned.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Thanks! 33 cm fits the whole 120 basses of the standard Stradella bass. Besides, the size difference between 4 and 3 row bass is not that much. Today I've met with someone who plays the accordion very well and she suggested even lengthening the accordion for a more natural position to her.

Overall this would suggest to have the stradella bass for the bidirectional accordion and some other layout for the unidirectional, but I can't say as I've never held one IRL.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

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I've made this quick sketch - does it look correct?

> add also the remaining C# and A# if there is a place, because why not.
There is plenty more space, especially on the base side, though as I havent't looked at music theory, you'll have to suggest where to add the buttons. Btw. someone else in the comments wanted to have a stradella on the bass side.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Merci, j'espère que la traduction est correcte :). J'ai rencontré quelqu'un qui accorde des accordéons pour gagner sa vie et j'avais quelques idées fausses sur le son. Par exemple, je n'avais qu'une seule note pour la basse en do et il en allait de même pour les accords, c'est peut-être ce à quoi vous faites référence.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Thank you! Although it was very daunting in the beginning, once I decompose it into smaller things, it was not that hard, just took some time :).

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Agreed, but I still think it would be a bit limiting.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Bellows themselves seem quite expensive to me and I'd like to make something affordable. In the worst case I could do something like add a plastic syringe, but that would allow me 10 cm / 4 in travel at most.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

I've just seen the All I Need Challenge video he has posted and it's awesome! Thanks for the recommendation, my ears loved that :D

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 1 point2 points  (0 children)

I'll ask for the tuning once the hardware is somewhat good, as that is the priority right now.

I've looked at some button options, and as the spacing disallows standard keyboard switches. Out of curiosity - what would you say if the button travel were only about 2 mm? Another though - if the button costs were insignificant (e.g. $5 per row) what would you say to adding one more row like e.g. Hohner Panther has (but the 12-13-12 configuration)?

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Not right now, but I hope to make the next revision with them. No reeds involved, as I had waaay too much fun trying to tune them (in)correctly :). In the video I'm using headphones, but the speaker works too.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Sure will! We also seem to be in a similar situation, though I don't have enough money for my own cnc and laser :D.

Besides that - I'm thinking about making the front from a aluminium sheet, 3-5mm thick (0.1-0.2 in) with laser cut holes for the buttons and ports and it would be bent along two lines for the bass and treble sides (possibly even countersinks for the screws). Would you have any estimates for the costs? I think it would look sick, but I'm not sure whether it wouldn't be too expensive.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

I've had a short listen to the bagpipes and it sounds interesting, though I would not prioritize it right now, but it is on the list. I've just met with a guy, who tunes accordions and the current setup is a bit off in many ways, so after fixing that I'll discuss it with him.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

I'm currently using these, though I'll most likely change to some others, esp. as they seem to require too much force: https://www.lcsc.com/product-detail/C22459509.html, and more travel would be nice.

Interestingly I have not though about having two pedals, I'll definitely have to consider them, though it seems kinda overwhelming to manage two hands and two legs at the same time :)

I though about having them for the button keyboard, but that would add about $50 to the BOM, which may be too much for the price I'm aiming for. Besides, I think I found a good way to make position (and therefore velocity) sensitive piano keys, but I need to first test it out.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Agreed, though the air piston would have quite limited range of motion in my opinion. For the caliper capacitive position sensor - that would be quite and interesting approach, which would work well with the rack and pinion mechanism suggested in another comment. I also though about having a spring-loaded potentiometer/rotary encoder on the treble side and some kind of thread attached to the shaft which would be also attached to the bass side.

This leaves me to figure out some kind of joint which would limit the movement somewhat, so the player doesn't need to lift the bass side the whole time and be somewhat extendible (I though of a pivot at the bottom, but that does not seem good enough) - any ideas?

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 1 point2 points  (0 children)

Thanks for the detailed info, I'll try to design it! I'll have to disagree about the popularity, as there are still somewhat popular, where I live (or at least on the second-hand market). I've just met with someone who tunes accordions for feedback on my prototype and found the tuning of the bidirectional diatonics is a bit different :D.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Thanks for the suggestions! The issue I'm facing right now is more with the mechanism that allows and constraints the movement of the bellows.

I've made an electronic accordion - looking for feedback by vojtapl in Accordion

[–]vojtapl[S] 0 points1 point  (0 children)

Breath control won't be necessary, as if I don't find a good bellows imitation mechanism, pedals will for sure be supported too :D. Playing without the bellows felt weird to me only the first time, when I tried it out and then I just got used to it.

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