@cotty said: If you don't like this anwser, you can upload the model to get a more specific hint... Sorry, I'm very new to all of this, that being said, I don't know how to send you the model.

[...] compatibility for Mac OS X 10.5+ [...] (source: http://sketchucation.com/forums/viewtopic.php?f=61%26amp;t=58936 )

For me (Win) it looks like this... [image: wJL4_SPstop.gif]

To make any concave, movable shape in SP you need to create a group consisting of sub-convex groups. Your top level group should be set to Compound2 shape. Your sub-groups are by default considered as a Convexhull, however, you can specify their shape otherwise. To make your "C" group have a concave collision you have to break it down to convex groups, group them together, and make the parent group a Compound2 shape. To set group shape, pick any desired group(s), right click (enter context menu), and select SketchyPhysics -> Shape -> Compound2. Note that SketchyPhysics 3.2 doesn't have a Compound2 shape. To produce a concave shape in SP3.2, associate the parent group as a Default shape and sub-groups as Convexhull shapes. Groups of Default shapes can be associated in later SP versions, but the problem is that Default shape doesn't have a true centre of mass, whereas Compound2 shape does have a true centre of mass. That's why I suggest using Compound2 over Default shape if you're using SP3.6. Anyway, here is a sample, which is compatible with SP3.2 or higher: movable convave shape.skp

Thanks I will give it a try and let you know about my progress.

@unknownuser said: door opening/closing or any things! You can also use CMD MOVER by Jim Foltz (? Don't remember) (free) Of course not like a Dynamic Component: you can't click on the object for launch the individual animation of one object but Click on some scenes yes! [image: LjWT_door.gif]!

I found out that there is a setting on each joint (as seen in the SketchyPhysics Inspector) called "ConnectedCollide" which is disabled by default. This setting must be checked for objects connected to the joint to undergo full collision checking.

I found out that there is a setting (as seen in the SketchyPhysics Inspector) for "ConnectedCollide" which is disabled by default. This setting must be checked for hinged objects to undergo full collision checking.

In order to make two connected bodies collide, you need to open SketchyPhysics UI, select the joint that connects two bodies, and in SP UI check the "ConnectedCollide" checkbox option. You have two hinges in your model. You'll have to check the "ConnectedCollide" for both hinges.

Hello Do i understand sketchyPhysics will NOT work on a mac with SU 2015 due to the 32bit issue? (SU 2015 will not load the SketchyPhysics libraries on my mac) Will there be a version of sketchyPhysics that work with SU 2015 on a mac? thanks tom

Due to the inhomogeneous internal structure of the table - groups, surfaces, lines, etc. - the table is sinking into the ground, if you use the Default setting. With the setting Box everything works OK. Try it ....

I have 2013, 2014 and 2015 Pro installed. getting ready to uninstall 13 & 14 because I never use them... I kept each as a precaution when install the newer versions.

I think SP was designed more for mini games in SU, like a simple car that relies on joints and keyboard controls. Search 3d warehouse for "SketchyPhysics" and sort it by "most likes". You'll come across various great uses of SP. SP, with realtime simulation engine, isn't good with mechanical movements. You could try making gear, but there are low chances that it would be reliable. Collision and joints seem to be flexible. I, once, made a differential gear and it works great, although, if you surround it with a drive-able car, there is a potential for lag and too much resistance on opposite wheels might trigger intersection between gears. I think animation would suit better when dealing with precise and accurate mechanical movements. But it all depends on how complex one wants to get with mechanics. The good thing about SP is that its simple to create simulations that could be exported to separate images and combined into a movie.

Nicely done faust. You have a talent

Hi Anton_S Thank you, so this is the piece of code i have now... wich includes a messagebox to ask the COM port and exit if CANCEL is pressed. The code is lumped together with some examples found here and there, so if there are any tweaks let me know! [image: okRG_spsu15serialrecieveexample.png] # DomoticX Virtual 3D Device Port SU15 interface. # Wat moet er gebeuren bij het starten van de simulatie? onstart{ options = ["Serial Port;", "Baudrate;"] default = ["COM8", "9600"] list = ["", "4800|9600|14400|19200|28800|38400|57600|115200"] serialsettings = UI.inputbox(options, default, list, "Serial port settings;") if serialsettings != FALSE $comport = serialsettings[0] $baudrate = serialsettings[1].to_i begin @serial = Serial.new($comport, $baudrate) rescue RubySerial;;Exception => e @serial.close if @serial MSketchyPhysics3;;SketchyPhysicsClient.physicsReset UI.messagebox("Serial port not found!") end else MSketchyPhysics3;;SketchyPhysicsClient.physicsReset end } # Wat moet er gebeuren tijdens de simulatie? ontick{ MSketchyPhysics3.closeControlPanel if frame == 1 string_size = 1024 $serialdata = eval(@serial.read(string_size)) logLine("COM poort; " + $comport.to_s) logLine("BAUD rate; " + $baudrate.to_s) logLine("Seriele data; " + $serialdata.to_s) logLine("") logLine("") logLine("") logLine("") logLine("") } # Wat moet er gebeuren als de de simulatie stopt? onend{ # Sluit de seriele poort als deze open staat. @serial.close if @serial } Ps. The simulation works fine... but sometimes when i STOP and START the simulation again i get this error, when i start it for the second time it works perfectly again, any ideas to prevent this? [image: 1T84_spsu15serialrecieveerror.png]

@anton_s said: Although it still has to be in onUpdate or onTick event. So your one liner would look like this: onUpdate { MSketchyPhysics3.closeControlPanel if frame == 1 }

Export tested with a simple example - Bug Splat after export of 2 DAE-files ... The script is in the table. Have no idea. I am a beginner in programming... Export tests in the SKP or image data format works well in this way. Sorry ... The better way is perhaps an enhanced Sketchy Physics Replay Collada export function. I recommend Anton S. for this. .dae direct export test

Anton, Thanks so much for your reply. I got it working on my own, but I really appreciate it. Could you tell me what you mean by two scenes? and could you tell me what you mean by a "temporary" box? I'll reupload my model on this thread as soon as I finish the other folding leg. My end plan is to use a modified trailer jack to power the scissors up and down. The trailer jack will be driven by a parts of a broken cordless drill.

You should add your solution here or a link to the solution for those who will find this topic in the future...

Thank you Anton_S! @All, Watch the YouTube movie where i used these scripts in action: https://www.youtube.com/watch?v=aMCL08xONZs SCRIPTS & TUTORIALS @ DomoticX.com Look for: "Virtual 3D Device Port" [image: dXOg_Virtual-3D-Device-port-SU08-logo.jpg] The tutorial pages are written in our main language: DUTCH Use google translate to translate the pages for you! (note: copy & paste scripts from the original untranslated site)