WEBVTT
Kind: captions
Language: en-US

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This is an instrument: elecrtonic keyboard instrument

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I recommend.

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Perfect for anyone who would like to press some keys so that some sound is heard.

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Unfortunately, it has one major drawback:

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It is not mine.

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I don't have such a thing, but maybe I would like to. And what now?

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And at that moment I had a brilliant idea.

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So what if I don't have one, when I just make one and then I will have it.

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Simple, isn't it?

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[So let's get to work!]

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Okay, I'll start with the keys.

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This is the most important element. Everything else will depend on it.

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After all, keys are a rather essential part of any keyboard instrument for some reason.

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Okay, but how to make them?

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For a long time I wondered how to make the keys so that they are made well.

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Until finally I found inspiration while watching videos on Youtube.

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Here, in this recording, we see a man on the Internet cutting out keys as wooden cuboids,

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then drilling through them, sticking them onto a perpendicular rod,

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and finally attaching springs which make the keys return to where they were after pressing and releasing.

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It is BRILLIANT!

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This is exactly what I needed.

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Here it's visible that rather advanced tools were used.

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I have much more ordinary tools, but I will not allow this to stop me.

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So I grab the saw, grab some plywood, and go to work, right?

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Well, not so fast. What about the dimensions?

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What dimensions should the keys have?

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Unlike it might seem, it is not a simple matter.

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The key should be wide enough for an entire finger to fit on it.

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And at the same time narrow enough to be able to reach several keys at once.

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Additionally, we would like all the white keys to have the same width,

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all the black keys to have the same width,

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and the white key fragments between the black keys to have the same width, which is also identical to the width of all the black keys.

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These requirements cannot be fulfilled

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The perfect keyboard does not exist.

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Fortunately, if we are able to accept inaccuracies of around 1mm, we are able to get a keyboard that is not perfect, but good enough.

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I can't cut it exactly enough anyway, so whatever.

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So now I can finally start cutting.

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One by one I cut out the keys out until I finally have all of them.

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For the black ones, I have to cut out two pieces and glue them together.

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When everything is cut out, it's time to drill the holes.

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Very important that they are perfectly perpendicular, otherwise everything will be warped and useless.

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Drilled, inserted and springs attached.

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But there's still something missing here.

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So what if I can press a movable key when pressing it does not change anything about this world?

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I need the key to turn something on when pressed and off when released.

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So what now?

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And here comes my next brilliant idea.

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I take some springs and install them in two straight rows under the keys.

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I take copper rectangles and screw them to the bottom of each key.

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So that one is exactly above the other.

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And now this plate is waiting impatiently just a few millimeters above the spring,

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and if only I press the key they will touch each other and close the electric circuit.

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And this actually works.

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But how did I make all the keys perfectly horizontal?

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That's another of my great ideas.

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There is a small screw in each key, which I can grab and turn left or right, thus adjusting its position.

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Simple.

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When the keys are working properly, I need some kind of electronic brain that will read their states and turn into beautiful sounds.

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For that role, this thing will be perfect,

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equipped with a powerful STM32 processor, a lot of inputs and outputs, which for some reason are arranged in a completely random order,

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and, most importantly, I got it for free.

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And indeed, it fulfills my expectations.

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It produces signals correctly.

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I can try playing something.

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Great! At this stage, I already have a completely working instrument.

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All that's left is to pack it in some nice box.

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Therefore,  back to work.

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The floor, the walls, speakers, some electronics,

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everything is coming together.

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This is a washing machine.

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And this - the user interface from the washing machine.

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Display, buttons and so on.

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Now, I take it over and use it as an important element of my instrument.

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Instead of laundry, there will be music.

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And done. It looks like this ...

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Now it's time to show what it can do.

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I turn it on and it's on.

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I press and it plays. I release - it doesn't.

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Pedal; I press and release - still playing.

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I can play up to 12 notes at once. I don't even have so many fingers.

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If I do this it gets higher.

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And this way - lower.

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Louder, quieter,

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brighter, darker,

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contrast,

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I can adjust whatever I want.

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I can choose the shape of the signal.

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I can also adjust the rising and falling of the amplitude.

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When I really like a setting, I can save it under any name I choose.

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Nice name.

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Saved.

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And now I can return to it at any time.

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Okay, so play something nice.

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It looks like I'm still not good enough at this finger dance.

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A professional who knows how to handle a keyboard is needed here.

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And that's it!

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But that's not all, because nowadays even computers can play.

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And right now I'm connecting a computer here that will tell which sounds to play.

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Of course, it's not the same and will never replace a human,

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but it can play some interesting things which I can't, because there are too many notes.

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Like here:

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That's all I had to say.

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If you are looking for a more advanced description

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than this not very serious video

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look here:
http://bicyclesonthemoon.info/klavirko

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http://bicyclesonthemoon.info/klavirko

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THE END