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TOPIC: Arduino and Proview

Arduino and Proview 9 years 8 months ago #1185

  • marc
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MotionControl USB I/O is for me the \"only\" device which is standard in Proview.
I am working in a technical school and my budget is low.
At the moment I am in the learning curve of Proview and I wonder if there is somebody with succesfull small \"low-budget -device-projects\" who wants to share their knowledge, for example with a Arduino. All suggestions are welcome...

Regards,

Marc
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Re:Arduino and Proview 9 years 7 months ago #1192

  • claes
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Hello Marc,

I'm not familiar with Arduino, but at a quick glance it looks as it would be quite easy to connect it to Proview. I will order a board and check it out.

Proview V4.8 has support for Velleman K8055 which is a low cost USB board suitable for educational applications.

/Claes
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Re:Arduino and Proview 9 years 7 months ago #1193

  • marc
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Hi Claes,

Holy Moly..., I just looked at thr release notes of 4.8.0.
The Arduino has tons of projects and a huge comminity.
In combination with the K8055 is it a great start to kick in the door from the educational system. And that's the place to be.....

/Marc
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Re:Arduino and Proview 9 years 3 months ago #2061

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Hi Claes,

I have found why/when the Arduino is slow.
It's because of the Arduino’s digitalWrite() command.
The same problems with a analogWrite() which takes longer than the digitalWrite().
Because of simplicity the pins are labeled, by the makers of the Arduino, as digital 0-13 and analog 0-5. The ATMega chip’s pins are labeled differently.
The trick seems to be to use “true c” style commands, what the AVR compiler uses.


void setup()
{
Serial.begin(9600);
}
void loop()
{
int initial = 0;
int final = 0;
initial = micros();
for(int i = 0; i < 500; i++)
{
digitalWrite(13,HIGH);
digitalWrite(13,LOW);
}
final = micros();
Serial.print(\"Time for digitalWrite(): \");
Serial.print(final-initial);
Serial.println(\"\");
initial = micros();
for(int i = 0; i < 500; i++)
{
PORTB = 0b00100000;
PORTB = 0b00000000;

}
final = micros();
Serial.print(\"Time for true c command: \");
Serial.print(final-initial);
while(1);
}


Off topic:

The cheap balance system with a metal ball is still playing my mind......
If on the axis is a stepper and a potentiometer I can only see an undefined area (when the coils of the stepper are not activated) where the ball it can't win from the \"friction\"....
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Re:Arduino and Proview 9 years 3 months ago #2064

  • Snarf77
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Hi Marc,

I also already red this here:
billgrundmann.wordpress.com/2009/03/03/t...ot-use-writedigital/

but the pin address is then hard coded during compiling, isn't it ? do you think this can be used together with Proview as you need to re assign the pin number depending on your Channel Number in your project ?

Snarf
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Re:Arduino and Proview 9 years 3 months ago #2066

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Hi Snarf,

I am pretty dizzy after:

www.billporter.info/ready-set-oscillate-...change-arduino-pins/
and
code.google.com/p/digitalwritefast/downloads/list

So, I don't really know yet. But there is always hope.....

/Marc
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