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SRF04 Sonar

Hitec robotics including ROBONOVA humanoid, HSR-8498HB servos, MR C-3024 Controllers and RoboBasic
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Post by ucrobots » Wed Mar 29, 2006 3:45 pm

Post by ucrobots
Wed Mar 29, 2006 3:45 pm

I think Robobasic has a bug where they can't service the timer fast enough, or, as others have said, there is a false trigger happening...


I fully agree that RoboBasic has a bug.

If you call the SONAR() twice the measurement results are nearly stable and it will read any object down to 2200µs/5.8µs/mm ~ 380mm.

So I hope Hitec will fix the bug.
I think Robobasic has a bug where they can't service the timer fast enough, or, as others have said, there is a false trigger happening...


I fully agree that RoboBasic has a bug.

If you call the SONAR() twice the measurement results are nearly stable and it will read any object down to 2200µs/5.8µs/mm ~ 380mm.

So I hope Hitec will fix the bug.
ucrobots
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Post by Pev » Thu Mar 30, 2006 6:00 pm

Post by Pev
Thu Mar 30, 2006 6:00 pm

ucrobots wrote:
I think Robobasic has a bug where they can't service the timer fast enough, or, as others have said, there is a false trigger happening...


I fully agree that RoboBasic has a bug.

If you call the SONAR() twice the measurement results are nearly stable and it will read any object down to 2200µs/5.8µs/mm ~ 380mm.

So I hope Hitec will fix the bug.


Just to update you all I have raised a call with Robonova Support in germany - they have updated me to day and they are still looking into the issues with the Sonar. No conclusion as yet but we can hope.

As I hear more I will update the posts

Pev
ucrobots wrote:
I think Robobasic has a bug where they can't service the timer fast enough, or, as others have said, there is a false trigger happening...


I fully agree that RoboBasic has a bug.

If you call the SONAR() twice the measurement results are nearly stable and it will read any object down to 2200µs/5.8µs/mm ~ 380mm.

So I hope Hitec will fix the bug.


Just to update you all I have raised a call with Robonova Support in germany - they have updated me to day and they are still looking into the issues with the Sonar. No conclusion as yet but we can hope.

As I hear more I will update the posts

Pev
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Pev
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Post by Adam » Fri Dec 01, 2006 4:56 pm

Post by Adam
Fri Dec 01, 2006 4:56 pm

Hi. I was just wondering if any of you can help me. I am working with the srf04 sensor for a university project. I have hooked it up to an oscilloscope and everytime i fire it it returns an echo pulse of 36ms(no object detected) irrespective of weather theres an object in its path or not. I really dont understand why its doing this! If anyone has any ideas, i would be very greatful of your suggestions. Adam
Hi. I was just wondering if any of you can help me. I am working with the srf04 sensor for a university project. I have hooked it up to an oscilloscope and everytime i fire it it returns an echo pulse of 36ms(no object detected) irrespective of weather theres an object in its path or not. I really dont understand why its doing this! If anyone has any ideas, i would be very greatful of your suggestions. Adam
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