Posts made by luckyvac

Hello Anton,
I would like to know if I can consider a density of 7800kg per m3 for a <servo motor cylinder> group not reacting to "by mass" "by density" Mass Control of UI.
THANK YOU
Jean-Luc

Hi,
I would like to have information on the units of the mechanical adjustments. Example: Density in kg / m-cubic yes? For motors: Max acceleration, Strength ( force en newton ) what are these settings for from a physical point of view.
How to make the link with the reality of indoor tests and measurements?
how to use them.
Are there any examples of calibrations? Where to find this information. Thanks, happy New Year.
jean-luc

HI Chris, I would like to know how to program the AND function in the representation of the automation as an attachment. This is a paper cutter which should only cut a sheet if the operator's two hands are busy pressing the two buttons <<a>> AND <<b>> at the same time.
With :

• Servo29773 to raise or lower the operator's right hand.
• Piston 19574 to press one or two buttons depending on the position of the operator's right arm.

Thank you very much . Good year !
Jean-Luc

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massicot mov.skp

Hi Anton, I realized an unstable gyroscope. The rotor is controlled with the spacebar. Can we make it stable? thank you

episode 2
Hello Anton, I can not regulate MSphysique so that the bearings are not transparent. what to do. thank you

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giroscope 2017 MOV.skp

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giroscope 2017 MOV vers 2.skp

indeed, I did not do it as an administrator. I must start again...

I do this... but it the same thing !

yes, the same ...but i have make the simulation with 1.0.2 and i have reinstal 1.0.3 .... I think, I check!

Hello, I changed my computer to solve the problem ...
Qosmio (After a crash on W10, W7 re-installed) > acer 7530G.
thank you

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Object selection fault.

Hi Anton,
Thank you for your reply. Since I am French I do not speak English well.

I did not understand everything ... the hand is unstable ?

https://www.youtube.com/watch?v=uJerEEx-btw
funny ?

I do not find She works well my hand . I like sketchup + msphysic because I understand what I do. Other software is too complicated for me. You will have time for: "The table with angles and times must be converted to a Ruby Hash".

At the moment I try this function of time:

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ft = 9,75 -7,91cos(6,28world.time) -0,88cos(18,84world.time)
-0,32cos(31,4world.time) -0,16cos(43,96world.time) -5,27sin(3,14world.time)

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Here is the Fourier series that works youpi !
-9.75+7.91Math.cos(6.28world.time)+0.88Math.cos(18.84world.time)+0.32Math.cos(31.4world.time)+0.16Math.cos(43.96world.time)+5.27Math.sin(3.14world.time)

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it does not work. What to do? thank you

Thank you very much, Best regards.
luckyvac

HI,

Here is the robot hand with 22 servo.

Best regards

luckyvac

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main gauche MOV 04.skp

Hi Anton and the community,
I think I have found the solution to control the damping of the servo motor. I worked on the geometry of "green" parts to decrease the sensitivity to the vibratory modes. As we can do in reality.
It's impressive !

Best regards.
luckyvac

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main gauche MOV 03.skp

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Hi Anton,
Thank you for your advice it works ... but ... I send you the left hand of the guitarist named "Pierrot".
I feel that the system comes into resonance when I connect several servo motors to each other.
What do you think ? How to decrease the resonance ?

Merci

have a nice week end.

Lucky guitaR

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main gauche MOV 03.skp

Hello, I would like to know how to increase the damping of the servo motor. Thank you

Great thanks Anton, I wait peacefully while working on other rhythm guitar.

Hello Anton,

Thank you for your reply. I will need more knowledge to carry out my project.

I am guitarist and I teach guitar accompanying songs.
This project aims to realize a tutorial to learn how to play the accompanying guitar and to show that one can realize accompaniments guitar with 5 or 6 rhythmic figures.

http://www.luckyanimationspectacle.com/index.asp?pageid=33

I used MSPhysics to simulate the movement of the arm and hand of a guitarist holding a pick.
  He accompanies guitar with a song following the rhythm 1-2-345et.
Fig.01 As an attachment. pierrot robo guitar

I used 2 servomotors:

• one for the forearm which operates the up and down of the forearm.
• a second for the descent of the hand.
  I made a stop-motion video by adjusting the two actuators point by point according to the following diagram:
  Fig.02 As an attachment 1-2-345et

I would like to replace the slider by time functions, point by point (FIG. 2) or FFT.

The displacement coordinates of the servomotors are shown in the table in figure 02.
You will find the simulation with the <FOREARM> (avant bras ) and <HAND> (main ) slider in my drive and an example video. I chose the refrain of Bob Dylan's "blowin in the wind".
Here is the link :
https://drive.google.com/open?id=0B00m7nJr8D_qTnRXX3AyeWVyZmc
The video tutorial shows the synchronized movement with a rhythmic tablature made with Guitar Pro MIDI (*.gpx, *.mid ). There is no human, just my voice .

I thank you for your attention and information you can communicate to me to help me realize my project.

Best regards

jean-luc alias luckyvac... lucky guitaR

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Hi Anton, is it possible to control the movement of a servo motor with a function of time. An Excel file ? In the command section can replace the slider by a function of time ( ontick ? ). ... thank you very match.

hello, I can not seem to find a tutorial to create joint . I use SketchyPhysics . I've the table IU but not the icons .
Where are the joints ???
Thanks for your help.
i've 0.2.0 it's worry ?
jean-luc

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@alan fraser said:

There are two main ways to animate using SketchUp...using layers and scene visibility and using Face Me components.

In the first example...using layers...you begin by modelling ALL the instances of the object that will be required in the animation. This example is of 12 cubes arranged like the hours on a clock, with an extra cube in the centre which stands still...representing those parts of the model that you don't want to animate. So that is what I modelled...13 cubes.

The next step is to add a layer for every instance of the animation...so I added 12...one for every hour. The centre cube is left on Layer0, but the cube in the 1 o' clock position is moved to Layer 1, the next to Layer 2 etc.

When you have all the cubes on separate layers you switch off all the layers except Layer1 (and Layer 0 which is never switched off)...then you create scene 1. Next you switch on Layer 2 and switch off Layer 1 and create scene 2...and so on right around the clock.

<<Do not forget to update after turning off the layers not visible on the Layers . (Drop down menu)
Ne pas oublier de faire actualisation après avoir éteint les calques non visible sur la scène.( menu deroulant )
And for change layer easily.
http://crobart.org/SketchUp/Outil.php?outil=gestionnaire-de-calques#menu2
[luckyvac]>>

When you have done this you will see that as you click on the scene tab representing any given hour, the cube associated with that hour will be the only one visible apart from the red cube in the middle.

To create an animation, go to the tourguide settings and set the scene transition to 0 (or switch it off altogether to speed things up even more) and also set the scene delay to 0, then run the animation.

In the attached example, you will get a clearer idea of what is happening if you open the layers palette and stretch it long enough to see all the layers before starting the animation.

Note: These tutorials were constructed for the old forum, using V5. From V6 onwards Pages are now called Scenes. However, in the tutorials, the Scene tabs will still be labelled Page1, Page2 etc.

sorry...

Hi,

I've a same question about density of group of sketchy physics .

Could you tell what is real weight of a group.

Example: here the group consists of a bar and 3 "hinge".

the results on the scale give indications that the density coefficient affects the single bar group or the bar with 3 "hinge".

the bar weighs between 7.0 g / cm3 and 0.2 g / cm3

like
https://www.youtube.com/watch?v=dKBq7zVxeCs%26amp;ab_channel=TheSketchyfreak

with
https://www.youtube.com/watch?v=wrpZPaNcxeQ%26amp;list=PLwMV6-9lUZunuWB1SDU_8gTL3PFVgD8gT%26amp;index=9%26amp;ab_channel=LuckyVacances

I sent you the simulaton comparing the weight of the bar.

a very big thank you.

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la pesée 03.skp

Bonjour,
je cherche un réaliser une fonction <et> avec la commande ontouch.
Cela consiste à entrer en contact avec deux objets pour obtenir la mise en service du moteur par exemple.
Merci

Hello, I want a make a <and> function with the OnTouch order. This involves contacting the two objects to obtain the engine startup, for example. Thank you

Voici le contexte
https://3dwarehouse.sketchup.com/model.html?id=uafee30e6-45d7-4bef-b78d-e65c57f7c7e0

Ontouch
https://sketchyphysics.fandom.com/wiki/SketchyPhysicsWiki?file=Sketchyphysics+Tutorial+ontouch%28%29+%28Motor+controller%29