Jump to content


Linear actuator in LDD


  • Please log in to reply
20 replies to this topic

#1 morson1

morson1

    Posts: 7
    Joined: 05-January 11
    Member: 15183

Posted 12 February 2011 - 09:08 PM

Hi

Is there any way to retract the LA in Lego Digital Designer? Or is it only useable fully extended?

Thanks in advance

#2 laserman

laserman

    Posts: 12
    Joined: 27-November 10
    Member: 14408

Posted 12 February 2011 - 09:46 PM

Hi,
unfortunately it ist not possible yet.
May be in future...
Thank you. Best regards, Laserman.

#3 NeuroMimetis

NeuroMimetis

    Posts: 16
    Joined: 31-May 09
    Member: 6249

Posted 02 June 2011 - 10:41 AM

Up ... to see if anyone has a trick to retract LAs

Thanks in advance.
Neuro

#4 Superkalle

Superkalle

    Posts: 5076
    Joined: 21-December 08
    Member: 4755
    Country: Sweden

Posted 02 June 2011 - 11:28 AM

View PostNeuroMimetis, on 02 June 2011 - 10:41 AM, said:

Up ... to see if anyone has a trick to retract LAs
Good question. I don't think there is such a trick, but maybe someone else knows.
Eurobricks Digital Design Forum - for all your LDD and Ldraw cravings

#5 DLuders

DLuders

  • Technic Technician


    Posts: 5817
    Joined: 17-October 09
    Member: 7868
    Country: USA (WA State)

Posted 02 June 2011 - 01:44 PM

You could possibly substitute a mini Linear Actuator (mLA) made by Zblj:

Posted Image

Alternatively, you could possibly re-engineer (mix and match) Zblj's pneumatic LDD parts (pictured below) to create a full-size Linear Actuator part that can be adjusted within LDD.  A Lego Technic Axle sliding up and down the center of 2x2 Round Bricks looks like a LA, if you color it Light Bluish Gray and attach the appropriate connections on the top and bottom....  

Posted Image   Posted Image  Posted Image   Posted Image

#6 hrontos

hrontos

    Posts: 579
    Joined: 05-August 11
    Member: 19500
    Country: Slovakia

Posted 05 August 2011 - 08:57 AM

View PostSuperkalle, on 02 June 2011 - 11:28 AM, said:

Good question. I don't think there is such a trick, but maybe someone else knows.

I have just created LXF file containing rectracted LAs.

Attached File  LAs.lxf   10.32K   305 downloads

There are 21 of them, each with different length (with step of 0.25 stud).

There are 4 groups:
1. length 0, 1, 2, 3, 4, 5
2. length 0.25, 1.25, 2.25, 3.25, 4.25
3. length 0.5, 1.5, 2.5, 3.5, 4.5
4. length 0.75, 1.75, 2.75, 3.75, 4.75

(remove the extra axles and other parts, they are there just to prove propper alignment).

#7 Superkalle

Superkalle

    Posts: 5076
    Joined: 21-December 08
    Member: 4755
    Country: Sweden

Posted 05 August 2011 - 10:27 AM

View Posthrontos, on 05 August 2011 - 08:57 AM, said:

I have just created LXF file containing rectracted LAs.

There are 21 of them, each with different length (with step of 0.25 stud).

There are 4 groups:
1. length 0, 1, 2, 3, 4, 5
2. length 0.25, 1.25, 2.25, 3.25, 4.25
3. length 0.5, 1.5, 2.5, 3.5, 4.5
4. length 0.75, 1.75, 2.75, 3.75, 4.75

(remove the extra axles and other parts, they are there just to prove propper alignment).
Great work hrontos! These will come in very handy indeed!!
Eurobricks Digital Design Forum - for all your LDD and Ldraw cravings

#8 hrontos

hrontos

    Posts: 579
    Joined: 05-August 11
    Member: 19500
    Country: Slovakia

Posted 05 August 2011 - 10:49 AM

View PostSuperkalle, on 05 August 2011 - 10:27 AM, said:

Great work hrontos! These will come in very handy indeed!!

The similar thing done with shock absorbers.

So compressed shock absorbers:

Attached File  ShockAbsorbers.lxf   18.26K   179 downloads

(Only one of the has length that can be aligned with a beam holes).

Edit: I updated the file during edit to include all more types of shock absorbers.

Edited by hrontos, 05 August 2011 - 11:19 AM.


#9 Superkalle

Superkalle

    Posts: 5076
    Joined: 21-December 08
    Member: 4755
    Country: Sweden

Posted 05 August 2011 - 10:56 AM

View Posthrontos, on 05 August 2011 - 10:49 AM, said:

The similar thing done with shock absorbers.

So compressed shock absorbers:

(Only one of the has length that can be aligned with a beam holes).
Once again, super work :thumbup: I'm surprised no one have thought about this clever solution before. I mean, it solves a lot of problems in a very elegant way.
Eurobricks Digital Design Forum - for all your LDD and Ldraw cravings

#10 hrontos

hrontos

    Posts: 579
    Joined: 05-August 11
    Member: 19500
    Country: Slovakia

Posted 05 August 2011 - 11:21 AM

View PostSuperkalle, on 05 August 2011 - 10:56 AM, said:

Once again, super work :thumbup: I'm surprised no one have thought about this clever solution before. I mean, it solves a lot of problems in a very elegant way.

Thank you, I am sorry, I updated the file in the mean time, to include more shock absorber types (I am not sure about the colors, but anybody can color it).

#11 Superkalle

Superkalle

    Posts: 5076
    Joined: 21-December 08
    Member: 4755
    Country: Sweden

Posted 05 August 2011 - 11:31 AM

View Posthrontos, on 05 August 2011 - 11:21 AM, said:

Thank you, I am sorry, I updated the file in the mean time, to include more shock absorber types
Yeah, I notied. I removed the links in my quotes  :blush:
Eurobricks Digital Design Forum - for all your LDD and Ldraw cravings

#12 Calabar

Calabar

    Posts: 2072
    Joined: 11-April 10
    Member: 10232
    Country: Italy

Posted 05 August 2011 - 11:59 AM

Good work!
I recommend to add your works in this key topic, if you didn't it already.
"Official LEGO Sets made in LDD" topic: Read guidelines before posting!

#13 NeuroMimetis

NeuroMimetis

    Posts: 16
    Joined: 31-May 09
    Member: 6249

Posted 07 August 2011 - 08:13 PM

View Posthrontos, on 05 August 2011 - 08:57 AM, said:

I have just created LXF file containing rectracted LAs.

Attachment LAs.lxf

There are 21 of them, each with different length (with step of 0.25 stud).

There are 4 groups:
1. length 0, 1, 2, 3, 4, 5
2. length 0.25, 1.25, 2.25, 3.25, 4.25
3. length 0.5, 1.5, 2.5, 3.5, 4.5
4. length 0.75, 1.75, 2.75, 3.75, 4.75

(remove the extra axles and other parts, they are there just to prove propper alignment).

Great, Great Work !

Thanks a lot for having shared  :sweet:

Neuro

#14 PerryMakes

PerryMakes

    Posts: 88
    Joined: 13-June 11
    Member: 18419

Posted 15 August 2011 - 03:32 AM

I'm sorry if I'm missing the obvious, but may I ask - how was is that the LA's were modified to different extension lengths?

Cheers ~ Perry

#15 hrontos

hrontos

    Posts: 579
    Joined: 05-August 11
    Member: 19500
    Country: Slovakia

Posted 15 August 2011 - 08:31 PM

View PostPerryMakes, on 15 August 2011 - 03:32 AM, said:

I'm sorry if I'm missing the obvious, but may I ask - how was is that the LA's were modified to different extension lengths?

Cheers ~ Perry

Luckily, the absence of retracted LAs was not a problem of how LAs are modelled in LDD, it was only problem of missing functionality in LDD user interface (there is nothing similar like hinge button that could be used to retract LAs or compress shock absorbers). So I modified the LXF file and changed position of LA "piston" to make it look retracted. May be TLG will add function to do such operations directly in LDD without editing the LXF file.

#16 PerryMakes

PerryMakes

    Posts: 88
    Joined: 13-June 11
    Member: 18419

Posted 16 August 2011 - 04:26 AM

View Posthrontos, on 15 August 2011 - 08:31 PM, said:

Luckily, the absence of retracted LAs was not a problem of how LAs are modelled in LDD, it was only problem of missing functionality in LDD user interface (there is nothing similar like hinge button that could be used to retract LAs or compress shock absorbers). So I modified the LXF file and changed position of LA "piston" to make it look retracted. May be TLG will add function to do such operations directly in LDD without editing the LXF file.

For a second there I imagined that you were Neo - and what appear to us mere mortals as linear actuators show up for you as green characters falling down the screen - and you just will the matrix transformations to happen with only your thoughts ... how cool would that be???  :grin:


Edited by PerryMakes, 16 August 2011 - 04:36 AM.


#17 hrontos

hrontos

    Posts: 579
    Joined: 05-August 11
    Member: 19500
    Country: Slovakia

Posted 16 August 2011 - 10:07 AM

View PostPerryMakes, on 16 August 2011 - 04:26 AM, said:

For a second there I imagined that you were Neo - and what appear to us mere mortals as linear actuators show up for you as green characters falling down the screen - and you just will the matrix transformations to happen with only your thoughts ... how cool would that be???  :grin:


:laugh: I am happy to see things in "True color". But sometimes, it would be nice to move things just by power of thought.

#18 896gerard

896gerard

    Posts: 2
    Joined: 19-July 12
    Member: 29775
    Country: The Netherlands

Posted 19 July 2012 - 01:37 PM

View Posthrontos, on 05 August 2011 - 08:57 AM, said:

I have just created LXF file containing rectracted LAs.

Attachment LAs.lxf

There are 21 of them, each with different length (with step of 0.25 stud).

There are 4 groups:
1. length 0, 1, 2, 3, 4, 5
2. length 0.25, 1.25, 2.25, 3.25, 4.25
3. length 0.5, 1.5, 2.5, 3.5, 4.5
4. length 0.75, 1.75, 2.75, 3.75, 4.75

(remove the extra axles and other parts, they are there just to prove propper alignment).

Thank you, very handy!

#19 H22802

H22802

    Posts: 1
    Joined: 10-July 13
    Member: 71045

Posted 10 July 2013 - 02:58 PM

View Posthrontos, on 05 August 2011 - 08:57 AM, said:

I have just created LXF file containing rectracted LAs.

Attachment LAs.lxf

There are 21 of them, each with different length (with step of 0.25 stud).

There are 4 groups:
1. length 0, 1, 2, 3, 4, 5
2. length 0.25, 1.25, 2.25, 3.25, 4.25
3. length 0.5, 1.5, 2.5, 3.5, 4.5
4. length 0.75, 1.75, 2.75, 3.75, 4.75

(remove the extra axles and other parts, they are there just to prove propper alignment).
Great work !

Thanks a lot for shared :sweet:

#20 pocketpc

pocketpc

    Posts: 3
    Joined: 16-July 13
    Member: 73162

Posted 16 July 2013 - 04:40 AM

If you'd like a different solution, I made some LXF's with separate top and bottom parts for shock absorbers. They aren't perfect, but they work quite well. I made a post about them here: http://www.eurobrick...topic=84734&hl= I haven't done LA's yet, but that is planned.

#21 D3K

D3K

    Posts: 539
    Joined: 07-August 12
    Member: 30082

Posted 09 March 2014 - 05:08 PM

Sorry to bump this topic, but have someone made the Mini LA in differents stages, like hrontos did with the normal LAs?

I see the ones for the outriggers on the LDD 42009 in this forum are fully retracted, but I'd really like one fully extended for a LDD project I'm working on! :classic:




1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users