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by m0jec
Thu Feb 25, 2016 9:50 pm
Forum: Astro Pi
Topic: Do I have a 'faulty' Sense Hat?
Replies: 5
Views: 2784

Re: Do I have a 'faulty' Sense Hat?

Thanks for that I will do some more experimentation.

The USB and Ethernet metal won't be an issue as the Sense Hat is on a 1m Extension lead.

I'm hoping once I have these issues sorted I can do some 'portable' working from a local hill.
by m0jec
Tue Feb 23, 2016 12:04 pm
Forum: Astro Pi
Topic: Do I have a 'faulty' Sense Hat?
Replies: 5
Views: 2784

Re: Do I have a 'faulty' Sense Hat?

I guess I'm missing something, as the above post maybe you can explain the Maths behind it? I do understand the concept of drift using inertial navigation, if that helps. I'm not sure what timescales you are talking about but I would expect the drift to take a significant amount of time to cause sig...
by m0jec
Sat Feb 20, 2016 10:42 pm
Forum: Astro Pi
Topic: Do I have a 'faulty' Sense Hat?
Replies: 5
Views: 2784

Do I have a 'faulty' Sense Hat?

I have been developing a rotator using the raspberry Pi, and was hoping to use the Sense Hat as a compass/Tilt Sensor. However I have an issue that seems to be more than just a calibration issue. I have done an RTIMULibCal of the Sense Hat, but it still seems to be inaccurate/drifting, Even if I kee...
by m0jec
Thu Nov 26, 2015 2:38 pm
Forum: General programming discussion
Topic: Data transfer between programmes help needed.
Replies: 4
Views: 1256

Re: Data transfer between programmes help needed.

Thanks for that, and yes I did wonder if all the computer equipment I have in my room might be affecting the readings on the magnetometer.

I'll read that site when I get a few mins but at first glance it does look interesting.

Good luck with your project, let me know how it progresses?

Norman
by m0jec
Thu Nov 19, 2015 1:55 pm
Forum: General programming discussion
Topic: Data transfer between programmes help needed.
Replies: 4
Views: 1256

Re: Data transfer between programmes help needed.

OK I have now managed to get Gpredict to output data (was something I'd missed!) my rotator is now working semi automatically. My next hurdle on the project is 'feedback', I'm currently using 'dead reckoning' which does seem to be working very well, certainly more than accurate enough for Radio work...
by m0jec
Fri Sep 25, 2015 1:56 pm
Forum: General programming discussion
Topic: Data transfer between programmes help needed.
Replies: 4
Views: 1256

Data transfer between programmes help needed.

Hi, Thanks for taking the time to read my request. I'll briefly explain the problem and then maybe someone out there might have a solution. I am in the process of building a Rotator for tracking satellites (the ISS is my main interest) using an old CCTV rotator (elevation and Azimuth) controlled by ...

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