My little ARM board March 21, 2014 05:48AM |
Registered: 10 years ago Posts: 39 |
Re: My little ARM board March 22, 2014 07:59AM |
Registered: 14 years ago Posts: 1,092 |
Re: My little ARM board March 23, 2014 05:57AM |
Registered: 13 years ago Posts: 7,616 |
Generation 7 Electronics | Teacup Firmware | RepRap DIY |
Re: My little ARM board March 23, 2014 10:40AM |
Registered: 13 years ago Posts: 1,352 |
Re: My little ARM board March 23, 2014 05:07PM |
Registered: 10 years ago Posts: 39 |
Re: My little ARM board March 23, 2014 06:53PM |
Registered: 14 years ago Posts: 1,092 |
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Traumflug
This ground loop thing is right, but ignoring the shield doesn't help, you get the loops through the data lines anyways. In fact, I found connecting the housing to GND to be neccessary even in my low EMF environment.
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Mallgan.O
Cefiar:
Can you elaborate or point to a thread where this problem has been investigated? I am curious to see under what circumstances these problem shows up and if it is absolutely determined that it is a ground loop problem and not interference that causes this behavior. Many, if not most, dev boards are also missing filtering that is commonly used in commercial products to pass EMC compliance tests. I want to try making this board as reliable as I can and that is why it is going to be limited in functionality so I can put more effort in verifying and testing, hopefully. I am aware it is not a trivial task to make a board with an MCU working at its limits, communicating over USB while switching the currents involved here on the same board so I hope I am not percieved as critical, I just want to try to understand and learn.
Re: My little ARM board March 24, 2014 09:05AM |
Registered: 13 years ago Posts: 7,616 |
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Mallgan.O
Can you elaborate too please? This USB reliability issues is one of the main reasons I am doing this.
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Re: My little ARM board March 24, 2014 02:41PM |
Registered: 10 years ago Posts: 91 |
Re: My little ARM board March 24, 2014 07:16PM |
Registered: 14 years ago Posts: 1,092 |
Re: My little ARM board March 25, 2014 04:33AM |
Registered: 13 years ago Posts: 7,616 |
Generation 7 Electronics | Teacup Firmware | RepRap DIY |
Re: My little ARM board March 25, 2014 09:49PM |
Registered: 14 years ago Posts: 1,092 |
Re: My little ARM board March 26, 2014 04:40PM |
Registered: 10 years ago Posts: 39 |
Re: My little ARM board March 26, 2014 06:01PM |
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Re: My little ARM board March 27, 2014 05:36AM |
Registered: 13 years ago Posts: 7,616 |
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Cefiar
Tramflug: If you want anything resembling accurate temp out of a thermistor, then yes.
Generation 7 Electronics | Teacup Firmware | RepRap DIY |
Re: My little ARM board April 02, 2014 06:42AM |
Registered: 10 years ago Posts: 39 |
Re: My little ARM board April 03, 2014 06:59PM |
Registered: 10 years ago Posts: 91 |
Re: My little ARM board April 04, 2014 05:20AM |
Registered: 10 years ago Posts: 39 |
Re: My little ARM board April 04, 2014 12:25PM |
Registered: 10 years ago Posts: 91 |
Re: My little ARM board April 07, 2014 09:48AM |
Registered: 10 years ago Posts: 69 |
Re: My little ARM board April 11, 2014 07:09AM |
Registered: 10 years ago Posts: 39 |
Re: My little ARM board May 12, 2014 02:42AM |
Registered: 10 years ago Posts: 39 |
Re: My little ARM board June 04, 2014 02:55AM |
Registered: 10 years ago Posts: 39 |
Re: My little ARM board June 11, 2014 06:12PM |
Registered: 10 years ago Posts: 91 |
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45.2.2.3 ADC: Trigger Launch Only One Conversion
A start command initiates a conversion sequence of one channel, but not of all activated channels as expected.
Problem Fix/Workaround
Send as many start commands as the number of activated channels, or use the free run mode.
git clone [github.com] cd aprinter ./build.sh mlab install ./build.sh mlab build ./build.sh mlab upload
Re: My little ARM board June 12, 2014 06:43AM |
Registered: 10 years ago Posts: 39 |
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P.S. @Mallgan.O Please make up a name for your board winking smiley