Prototype with infinite pivot lenght

vagfilm I will start by saying that I could not follow all the mechanical details

I'll see if I can build it with LEGO and post a video about it [1]. That'll make it obvious.

vagfilm By getting rid of the lever, will you transform the key in a long tip or in a long fallboard?

Well, I am not sure I understand your question, so let me rephrase it. Pardon me if I am answering something else, let me know if that is the case. You are asking "how heavy" this approach will make the touchweight: like it commonly is at the tip of the key, or like it commonly is at the fallboard?

The answer to the rephrased question is: it depends on how you build it. If you are using this thing as a digital piano key, you can either use a spring (and so it will be as heavy as the spring you put in) or you can use a seesaw below it (similar to a regular piano key) and have the actual key push the seesaw, but touching it in one point only. You can adjust the touchweight by choosing the place where it touches and the actual counterweight. Of course if you'd be using this in a regular piano (why? I don't know, you asked 😁) you can't change the "counterweight" (since there is none, and the whippen+hammer act as one), but you can still change the place of contact. I might need to add also this to the LEGO model or drawings.

🎶

[1] Does it need to be in youtube or could be an attachment here?

RIP I'll see if I can build it with LEGO and post a video about it

Hi. No need to patronize me. I was honest when I said that the details on the parallelogram approach and how it is similar to "bicycle rear derailleurs", is beyond me. I simply stated that I could not understand it, and since I did not ask for a clarification nor an explanation, no lego explanation is necessary for me. Keep up your adventure.

vagfilm

I think delvento probably mentioned the LEGO with the real intent of showing how it works, I doubt he meant being dismissive/patronizing, at least that’s how I interpreted from aside. Peace ✌🏻

Don't worry CG: all is well (but I cannot do the peace emoji... I don't understand derailleurs and I go as far as a few face emojis... 😁 )

CyberGene Peace

Is there a "Live long, and prosper!" emoji as well? 😁

So long as it's technical lego, it qualifies as a technical explanation.

QuasiUnaFantasia Is there a "Live long, and prosper!" emoji as well? 😁

The emojis are now so many that when I start picking up one, I usually search them typing keywords, and funnily enough for "prosper" the following emoji is shown, the one I also use for our "pianist" tag (for lack of anything closer to pianists): 🖖🏻 AFAIK, it's a Star Trek gesture.

Yup, that's the one! 😀

xooorx So long as it's technical lego, it qualifies as a technical explanation.

Indeed. And good thing that I did not say that I wanted to carve it by hand in walnut and put gold center pins 🤣

In any case, I wanted to do the LEGO for myself anyway, quickly recording it (sloppily) was a no brainer. Here it is:

It's in 3 parts (funny for a 20sec clip):

• showing just the parallel motion (infinite pivoting) of the key
• showing a possible way to give it the touchweight with a seesaw below
• same as the previous one with a different touch point which (if everything else is equal) will create less dip and heavier touch.

Actually, doing it in life has shown me one interesting feature!! It's always good to make prototypes, even LEGOs 😁 Suppose:

• the seesaw below can be moved back and forth (from pianist's view: left and right in the video), and
• the seesaw allows different levels of dip without problem (just a clearance problem), and
• the correct amount of dip is "fixed" by stops in the parallelogram or actual key

Then, by moving the seesaw back and forth (from pianist's view: left and right in the video) one could make this thing change the real touchweight of the keybed, not just the simulated one via the response of the audio! Wow! Isn't that amazing?

My bad... You were serious about the Lego explanation... Maybe it is a cultural thing, but in my neck of woods saying "Do you need to see it on Lego?" is something not nice to say...

vagfilm in my neck of woods saying "Do you need to see it on Lego?" is something not nice to say...

Ops, really sorry about that. I did not even thought it could be something bad! Just to learn the idiom, does it mean something like "you are stupid that don't understand this, it's so simple"? Weird about how different cultures have different ways to look at things and creating idioms.

vagfilm You were serious about the Lego explanation

Yes, I was serious and still am. I think using LEGO is a very nice thing to do for rapid pre-prototying (before moving to 3D printing for actual prototyping). As you might infer from the video, I need to buy more LEGO Technics kits, since I ran out of the "good" parts and had to steal some pink-house things from my daughter!

vagfilm My bad... You were serious about the Lego explanation... Maybe it is a cultural thing, but in my neck of woods saying "Do you need to see it on Lego?" is something not nice to say.

Here in the ‘states, this kind of expression/remark is used often enough in numerous variations that i no longer think of it as “bad” ….”not nice” or the like BUT it helps to know the context, such as here where there otherwise does not appear to be any bad blood/vibes evident 🙂 …. in a modern sense, “snarky” and “snippy” may be suitable characterizations ….. and maybe, folks from your neck of the woods are more formal/less vulgar.

Having spent years living various locales here in America, where each locale has its own repertoire of expressions to include a sub-section for snark, i first cut my teeth (translate: began growing some thicker skin ) during my first tour of the ‘burgh, circa 1978 …. where i first learned that this kind of not nice/bad/snark is generally known as “jag’in” ….. i was just jagin ….. as in “ just bustin your stones a bit” IE. a peculiar form of friendly endearment that to the uninitiated may look/sound like sarcasm as playful verbal warfare “ for cryin out loud drew, do you need me to draw you a picture of it?!” 😉 …. i’m just jagin but i think delvento was not.

Drew-r in Australia Lego is seen as evil satanic spawn because:

1. It is overpriced plastic junk
2. At 3am in the morning it can inflict serious foot injuries or worse! (Home Alone style!)

If someone buys your kid Lego as present without prior authorization then that's basically a declaration of war 😀

Perhaps similar sentiments exist in Portugal.

burkey

😅

As a kid from a poor country we didn’t have LEGO here and only a very few kids with rich parents (and maybe part of the socialist apparatus) had ones and I used to salivate a lot over LEGO. I was still a kid when the communism fell and they started importing them but my family was poor and LEGO was too expensive. Well, imagine my delight when my wife bought me a present a few years ago, my very first LEGO 😀 I mean, I could’ve bought myself a LEGO for a long time but I was already a grown man. The idea that someone got it finally for me as a present was a psychological trauma finally fixed after so many years 😃

burkey Perhaps similar sentiments exist in Portugal.

We are simple people... It's just another way of saying "if you cannot understand how it works, I will dumb it down to you with lego and maybe it gets evident"...

Here in Denmark, where LEGO is from, no associations exist between that word and something bad. The man who invented it named it from the first two letters from each of the words in the sentence "Leg godt!", which means "Play well!"

Don't ger me wrong: lego is well loved here and it is probably the best seller toy during Christmas (coincidently, I just bought a huge set for my daughter yesterday because she was running out of bricks for her house projects...). What I mentioned is in the contex of a conversation between adults 😊

vagfilm We have a similar expression in Denmark: "Must you have it cut out in card board?" This essentially means: "are you so dim-witted that you cannot understand it when it is explained normally?". Sometimes the phrase is used less aggressively: "To cut it out in card board …", meaning "To put it plain and simply …"

And the "make a drawing to you" in english (and also here). It's the same thing everywhere...