Search found 67 matches

by RobAtLab
09 Jul 2018, 15:26
Forum: General questions
Topic: Sending integers as custom datablocks
Replies: 2
Views: 1589

Sending integers as custom datablocks

I'm using custom datablocks in quite a lot of ways to transfer information between models to both carry communications and say things like "you are in range of my sensor". But in some cases I only need to send really basic information across, in some cases all I need is for one object's ch...
by RobAtLab
09 Jul 2018, 15:14
Forum: General questions
Topic: Controlling Joints in a Flexible robot with V-rep
Replies: 2
Views: 1809

Re: Controlling Joints in a Flexible robot with V-rep

I think you might need to change settings on your google drive link, it doesn't seem to open. You might have left on a setting such as "private only I can access".
by RobAtLab
06 Jun 2018, 16:24
Forum: General questions
Topic: bulldozer on a plane
Replies: 4
Views: 2161

Re: bulldozer on a plane

One thing that often helps with then physics engine is to increase masses and moments of inertia of objects above their realistic values, I don't know whether your bulldozer is infact a small robot pushing around some drinks cans or a computer controleld fullsized bulldozer pushing around tonnes of ...
by RobAtLab
02 Jun 2018, 17:51
Forum: General questions
Topic: Increasing length of console log
Replies: 3
Views: 1886

Re: Increasing length of console log

Set by my terminal application? Just to be clear I am talking here about the console at the bottom of V-REP which is printed to using print() not the one you get to if you use print=printToConsole. I couldn't do my printing to the linux terminal using print=printToConsole because the linux terminal ...
by RobAtLab
02 Jun 2018, 00:42
Forum: General questions
Topic: Increasing length of console log
Replies: 3
Views: 1886

Increasing length of console log

I've been doing some tests but found a few buggy effects in the code (internal lua scripts) that I've written as my controllers. I've resorted to inserting lots of print statements into my code to output it to the console, this way I can diagnose where bugs in my controller code lie. But I'm finding...
by RobAtLab
20 Feb 2018, 16:47
Forum: General questions
Topic: Joint (acting as position control motor) only works at fast speeds
Replies: 4
Views: 2373

Re: Joint (acting as position control motor) only works at fast speeds

Neither ODE, nor newton, nor other versions of the Bullet than 2.78 seemed to work very weel. I've yet to try downloading and installling vortex. But I've been playing aound with moments of inertia, I realise that earlier I'd only been fiddling with masses, and I seem to be having some success. Than...
by RobAtLab
19 Feb 2018, 13:11
Forum: General questions
Topic: Joint (acting as position control motor) only works at fast speeds
Replies: 4
Views: 2373

Re: Joint (acting as position control motor) only works at fast speeds

Sorry, I don't think I quite understand your answer, I'm pretty new to V-REP. My issue seems to be something affecting any situation in which I try to have a series of modules connected and then want a joint in one of them, or an external force acting on one of them, to transmit forces through to th...
by RobAtLab
15 Feb 2018, 15:26
Forum: General questions
Topic: Joint (acting as position control motor) only works at fast speeds
Replies: 4
Views: 2373

Joint (acting as position control motor) only works at fast speeds

I've got a robot weighing about 13kg in my simulation* using the bullet 2.78 physics engine and V-REP 3.5 latest version, which has a child object (amongst other child objects) of a joint with motor enabled and control loo-p enabled, I set this joint to have a max torque of around 8e4 Nm to give ple...
by RobAtLab
04 Feb 2018, 20:56
Forum: General questions
Topic: Slotting pin into hole only works when I scale up by 4
Replies: 4
Views: 1953

Re: Slotting pin into hole only works when I scale up by 4

In the end I fixed this. It seems that by using some simplified versions of the meshes, and then making them into compound groups of convex shapes rather than random shapes this fixed itself completely. My pins now slide into the holes perfectly and seem pretty stable over the long term, no weird vi...
by RobAtLab
04 Feb 2018, 20:43
Forum: General questions
Topic: Strange problem with objects slipping out of place, what am I doing wrong?
Replies: 2
Views: 1545

Re: Strange problem with objects slipping out of place, what am I doing wrong?

I've realised that most of my parts are really tiny, and very low mass, as the real robot parts are. I'm going to have a go at changing the internal scaling, perhaps using full scaling, of the physics engine. If that fails I'll try just making up some fictionally high masses and seeing if that impro...