Search found 81 matches

by DiodeHead
08 Jul 2020, 08:50
Forum: Workshop
Topic: Designing an injection machine for keyboard science
Replies: 5
Views: 979

Re: Designing an injection machine for keyboard science

I hope it helps or at least inspires.
by DiodeHead
16 Dec 2018, 12:38
Forum: Workshop
Topic: 20181214T22000Z: Learn how to make Model F / Beamspring PCBs
Replies: 23
Views: 1888

I don't - but I have made "PCBs" with a vinyl cutter, acetate sheet, and copper tape and the capacitive swing is insane. Remember, the thinner the board, the closer the pads are which alters the value of the second capacitor. So from everything said, I understand that this works more or less like t...
by DiodeHead
16 Dec 2018, 11:43
Forum: Deskthority talk
Topic: Please welcome your new kingpin: matt3o
Replies: 30
Views: 7673

congrats to matt3o, can't wait to see what the future brings to Deskthority :)
by DiodeHead
15 Dec 2018, 20:14
Forum: Workshop
Topic: 20181214T22000Z: Learn how to make Model F / Beamspring PCBs
Replies: 23
Views: 1888

no, the bending stuff I meant for a normal switch PCB and test curvature to see if more comfortable or not, like maltron keyboards but I think they are much more complicated than a simple curvature. is that capacitive design the same of touch-capacitive?? http://www.ti.com/lit/an/slaa576a/slaa576a.p...
by DiodeHead
15 Dec 2018, 18:02
Forum: Workshop
Topic: 20181214T22000Z: Learn how to make Model F / Beamspring PCBs
Replies: 23
Views: 1888

thanks for sharing :) I have a question, could the outline that you make in the second layer just be a copper pour?? wouldn't that be much less work?? or is made this way because a copper pour would interfere with the capacitance of the switches. I liked a lot the 0.6 mm tip on PCB material so it's ...
by DiodeHead
13 Dec 2018, 19:08
Forum: Workshop
Topic: 20181214T22000Z: Learn how to make Model F / Beamspring PCBs
Replies: 23
Views: 1888

yes please, post your youtube channel and record it T_T so we can watch it anytime.
by DiodeHead
09 Dec 2018, 21:24
Forum: Deskthority talk
Topic: Future of DT
Replies: 83
Views: 15251

well, I'm sure there are experts in vim or emacs in this forum (I see the war over this coming a mile away), and an advanced course in an advanced editor would be great, I'm just starting to learn vim and I wish someone would have introduced me to it when I was studying computer programming in commu...
by DiodeHead
09 Dec 2018, 19:53
Forum: Deskthority talk
Topic: Future of DT
Replies: 83
Views: 15251

well, I'm not against the introduction of retrocomputing, it's kind of nice to have more of the things I like on the same place, but since this is an input device forum I was thinking more on the gaming input devices or midi input devices to follow the same path of finding the right switches and fee...
by DiodeHead
09 Dec 2018, 14:36
Forum: Deskthority talk
Topic: Future of DT
Replies: 83
Views: 15251

hum interesting, to tell you the truth for me what attracted me to Deskthority is the workshop subforum and I never went out of there which is very bad since I just discovered the market :o (my wallet is looking at me like this ¬¬) and other categories that are interesting I vote for niche and knowl...
by DiodeHead
16 Nov 2018, 16:40
Forum: Workshop
Topic: ATMEGA32U4 vs AT90USB1286
Replies: 7
Views: 1155

you can do it yourself, in the pictures that you posted earlier you can modify and put an 11x11 matrix with the buttons on the bottom part, I think the concept that your not taking into account is that "the matrix" is how you connect your keys electrically, but has nothing to do with how you arrange...
by DiodeHead
01 Sep 2018, 14:08
Forum: Workshop
Topic: CommonSense controller for digital piano project?
Replies: 49
Views: 4139

since it's a dual optical sensor wouldn't be more like:

r r XX__XX__XXXXXXXXXXXX____XX <-- r = reciever

that with a timer could give you the time difference between 2 transitions and with that velocity of sorts ??

tran2 - tran1 / time = velocity ??
by DiodeHead
01 Sep 2018, 12:23
Forum: Workshop
Topic: CommonSense controller for digital piano project?
Replies: 49
Views: 4139

then from there what I get is that the easier route is to send a very polite a loving email to pianoteq support asking if they have some documentation about what midi commands they accept and start designing from there, if we know what info to send its easier to see what sensors are more adequate, t...
by DiodeHead
01 Sep 2018, 10:40
Forum: Workshop
Topic: CommonSense controller for digital piano project?
Replies: 49
Views: 4139

Really good point Mu, midi is very constrained and at the end of the day you only send noteON(velocity) and that velocity only have 128 points of resolution if I remember correctly, so the more sensor you use the only thing you get in return is more accuracy between lets say velocity = 67 and veloci...
by DiodeHead
31 Aug 2018, 14:31
Forum: Workshop
Topic: CommonSense controller for digital piano project?
Replies: 49
Views: 4139

I like a lot the aluminum extrusion idea with the strange tape to make it a bearing surface, that way you don't have to use a separate part made of brass or something similar. it's a pity that the web and the forum are down I would like to see more about the internal mechanics if those mechanics are...
by DiodeHead
04 Jul 2018, 16:00
Forum: Workshop
Topic: CommonSense controller for digital piano project?
Replies: 49
Views: 4139

The mic sensor is an interesting approach but I might have some problems with noise as I use loudspeakers during the day and headphones at night. then piezos would be a better option, that is what is used in electronic drums. But you would encounter a lot of problems with that too, I used to have a...
by DiodeHead
01 Jul 2018, 12:21
Forum: Workshop
Topic: CommonSense controller for digital piano project?
Replies: 49
Views: 4139

haha I'm too slow, some of my questions have been answered while I wrote the post
by DiodeHead
01 Jul 2018, 12:06
Forum: Workshop
Topic: CommonSense controller for digital piano project?
Replies: 49
Views: 4139

In the photo, you also see three pots on the breadboard; those are for CyberGene's manual calibration. For 88 keys that gets expensive and unwieldy to build. Also difficult to calibrate and recalibrate hundreds of pots manually. So a software solution would be much easier. what is he calibrating wi...
by DiodeHead
30 Jun 2018, 23:09
Forum: Workshop
Topic: CommonSense controller for digital piano project?
Replies: 49
Views: 4139

o man the internals on this pianos are awesome, I would love to see the key mechanism made too, in a way so you can regulate the tension on the keys and have custom tension depending on your hand strength. that optical sensor looks interesting, and for the midi handling I don't think you would have ...
by DiodeHead
18 May 2018, 08:42
Forum: Workshop
Topic: basic backlight
Replies: 16
Views: 1190

you're right, but I wanted to do it with the transistor to see what problems I would encounter and found out, they are little fragile creatures, I'm also making a tube amp and tubes support much more abuse, I already have burnt two of them (transistors), but the third one is hanging in there. My que...
by DiodeHead
17 May 2018, 16:13
Forum: Workshop
Topic: basic backlight
Replies: 16
Views: 1190

hmmm then is settle the 470 ohms resistor it is, I'll then end up with a total current of 250ma + MCU. For transistors, I have to order some 337 (that is what I'm seeing in most Arduino tutorials with a 2k2 resistor) since all I have on hand right now is 2n3906 and those are rated for 200ma if I'm n...
by DiodeHead
15 May 2018, 16:37
Forum: Workshop
Topic: basic backlight
Replies: 16
Views: 1190

I went with half that (470 ohms) and I'm still happy with brightness but I think I should be aiming for something like 250ma including full brightness and MCU running, isn't it?
by DiodeHead
15 May 2018, 16:18
Forum: Workshop
Topic: basic backlight
Replies: 16
Views: 1190

haha thanks a lot, hmm I was testing right now and I was wondering where some of that brightness went, I still don't know why I put there a 2
by DiodeHead
15 May 2018, 16:00
Forum: Workshop
Topic: basic backlight
Replies: 16
Views: 1190

well, the one's that I have are 2.8v forward voltage, I guess that they should be as Anakey said, all in parallel with their individual resistors. If I put one on my bench power supply they get very nice and bright with 3v and 0.01amps so in the program that zool recommended I wrote: 5: Source volta...
by DiodeHead
14 May 2018, 23:09
Forum: Workshop
Topic: basic backlight
Replies: 16
Views: 1190

:) thank you very much, I'll read it and try to put something together as soon as possible. :)
by DiodeHead
14 May 2018, 17:22
Forum: Workshop
Topic: basic backlight
Replies: 16
Views: 1190

basic backlight

hi guys, I need I little help with a topic that would be very basic to some. I have a project in mind and it involves backlight, it has 50 keys each one with it's corresponding led, as features I only want to control brightness. https://www.dropbox.com/s/a2as1tsmq894dht/backlight.jpg?raw=1 this is h...
by DiodeHead
07 May 2018, 15:34
Forum: Workshop
Topic: Circuit Cellar 1995 - Articles on Keyboard Interfaces.
Replies: 1
Views: 378

thanks for sharing, definitely something I need to read since for the project that I have on my todo list is to make my own firmware and get in touch with programming again.

:)
by DiodeHead
24 Apr 2018, 15:27
Forum: Workshop
Topic: Mia a 122 soon to be opensource, if it works that is.
Replies: 66
Views: 7339

you're implementing it on a pic32 if i remember correctly, isn't it? are you implementing the USB yourself? some time ago I only could find tutorials on the proprietary USB pic libraries, I'm curious about your dev setup.

:)
by DiodeHead
01 Apr 2018, 14:10
Forum: Workshop
Topic: Mia a 122 soon to be opensource, if it works that is.
Replies: 66
Views: 7339

ok now i completly get the connector situation, very cool i can't wait to see it in action.

I know is provably too early to ask but, what are your thought on the case design and construction?.
by DiodeHead
01 Apr 2018, 12:22
Forum: Workshop
Topic: Mia a 122 soon to be opensource, if it works that is.
Replies: 66
Views: 7339

Extremely impressive, the password manager i find really interesting and i think is something i need to work on for myself, what i don't see very clear ( provably cos my ignorance ) is the conectors footprints and cutout, when you have a 3d render or the physical thing built i would love to see how ...
by DiodeHead
05 Sep 2017, 16:33
Forum: Workshop
Topic: ALPS clones in an arcade button
Replies: 0
Views: 380

ALPS clones in an arcade button

hi guys, i found this wonderfull surprise inside an arcade button. https://www.dropbox.com/s/m1qql74us781hx9/surprise.jpg?dl=0 a alps clone, the black one, the other is one of my mathias for reference, is the clicki kind but is very easy to take out the clicki leaf and covert it to linear. I bought ...

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