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R972 problems

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1R972 problems Empty R972 problems Sun Feb 06, 2022 12:17 pm

marjan.mrak



Hello,

two problems I have noticed for the moment.

1) Pin 8 on Arduino Uno refuses to work as "PULL_UP_INPUT" (this worked fine int R872). However pin 7, for example, works.
I haven't tested other pins.

2) OP-amp in a role of comparator: it does not work on "Vin higher than Vref" (with inverting input as Vref, non-inverting input as Vin) - unless I messed up something. Smile This does NOT work in R872 also.
However OP-amp as comparator principle works imy VU meter project. https://www.youtube.com/watch?v=i-Hup9x3toE
I cannot load a schematics; I get "Uploaded file is not valid: exceeded image dimensions limit (image size : [512 x 389], limit : [1 x 1]).".

Regards,
Marjan
Attachments
R972 problems AttachmentDC data exchange.zip
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Last edited by marjan.mrak on Sun Feb 06, 2022 12:40 pm; edited 2 times in total

2R972 problems Empty Re: R972 problems Sun Feb 06, 2022 12:26 pm

arcachofo

arcachofo

To add images to your posts, have a look here:
https://simulide.forumotion.com/t383-how-to-add-pictures-and-attachnents-to-your-posts

I will have a look to those bugs.

3R972 problems Empty Re: R972 problems Sun Feb 06, 2022 12:33 pm

marjan.mrak



I edited my report and appended schematics.

4R972 problems Empty Re: R972 problems Sun Feb 06, 2022 12:41 pm

arcachofo

arcachofo

Both problems seem solved at Rev 928.

You can see last commits here:
https://bazaar.launchpad.net/~arcachofo/simulide/1.0.0/changes

5R972 problems Empty Re: R972 problems Sun Feb 06, 2022 1:00 pm

arcachofo

arcachofo

About the schematic:
You need to adjust opAmp voltage is Properties->Suply.

There is an error setting this property (solved at Rev 930) but this is not the main problem.

EDIT:
There is a problem that looks similar to this: https://simulide.forumotion.com/t455-ili9341-the-nightmare-continues

Hopefully this circuit will help to solve it.

6R972 problems Empty Re: R972 problems Sun Feb 06, 2022 1:45 pm

arcachofo

arcachofo

Op-amp problem solved at Rev 931.

Arduino pullups are working for me.
If they are not working for you let me know and share your code.

7R972 problems Empty Re: R972 problems Sun Feb 06, 2022 4:56 pm

marjan.mrak



I confirm that "OP-amp as comparator" is now working as expected.

However I still have a pull-up problem on Arduino Uno pin 8. Project is attached.

Regards,
Marjan
Attachments
R972 problems Attachmentlightshow.zip
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8R972 problems Empty Re: R972 problems Sun Feb 06, 2022 5:44 pm

arcachofo

arcachofo

Thanks.
The pullup is indeed working, you can check adding a probe.
The problem is deeper... and the solution is not tribial. I'm working in it right now.

9R972 problems Empty Re: R972 problems Sun Feb 06, 2022 7:00 pm

arcachofo

arcachofo

Finally it was easier than I expected.
Problem solved at Rev 933.

Also found the problem in ILI9341.

10R972 problems Empty Re: R972 problems Sun Feb 06, 2022 8:02 pm

marjan.mrak



Yes, pull-up input is now working properly on Arduino pin 8.

I also noted, that DS1307 example is now working.

Kind regards,
Marjan

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