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by Bob-666
Tue Nov 15, 2016 8:32 am
Forum: All Other Phidgets
Topic: Bipolar stepper stalls for high values of current
Replies: 1
Views: 5516

Re: Bipolar stepper stalls for high values of current

What is the voltage and current rating of the motor power supply?
by Bob-666
Sun Dec 06, 2015 1:51 pm
Forum: General
Topic: Phidget Speed?
Replies: 12
Views: 18277

Re: Phidget Speed?

Good video - it would be interesting to compare the performance using polynomial moves versus trapezoidal moves to see if you can quantify the advantage. Ideally, though, you need to have a realistic load on the motor in terms of friction and inertia - it's behaviour may be quite different when heav...
by Bob-666
Sun Dec 06, 2015 4:04 am
Forum: General
Topic: Phidget Speed?
Replies: 12
Views: 18277

Re: Phidget Speed?

Ok, one way is to build your own circuit controlled via the parallel port - any cheap ancient second-hand PC will do - preferably one that runs DOS which you can program with Visual Basic for Dos, Turbo-Pascal etc. Multi-tasking operating systems like Windows are not so good for real time control as...
by Bob-666
Sat Dec 05, 2015 3:42 am
Forum: General
Topic: Phidget Speed?
Replies: 12
Views: 18277

Re: Phidget Speed?

Are you saying that each stepper motor needs to execute something more complex than the usual trapezoidal velocity profile or is that sufficient? If it is, then any off-the-shelf microstepping controller board, eg Phidgets 1067, would suffice.
by Bob-666
Thu Dec 03, 2015 9:01 am
Forum: General
Topic: VB.net/mono problem, I can not run it
Replies: 9
Views: 22572

Re: VB.net/mono problem, I can not run it

To run a VB.Net program at bootup you need to: apt-get install mono-4.0-service and create a file something like this one (astro): #! /bin/sh ### BEGIN INIT INFO # Provides: astro # Required-Start: $sshd $network $remote_fs # Required-Stop: $sshd $network $remote_fs # Default-Start: 2 3 4 5 # Defaul...
by Bob-666
Wed Dec 02, 2015 3:09 pm
Forum: General
Topic: VB.net/mono problem, I can not run it
Replies: 9
Views: 22572

Re: VB.net/mono problem, I can not run it

Have you tried copying your VB.Net source code to the SBC3 and compiling it on there by eg
vbnc stuff.vb -r:Phidget21.NET.dll
which creates stuff.exe
then run it:
mono stuff.exe
You only need the dll ref if calling phidget methods, of course.