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Author Topic: firmware for my old polargraph
merijnpen
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Posts: 19
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Post firmware for my old polargraph
on: November 20, 2012, 14:21
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Hey there!

I was hoping you could help. I made a polargraph plotter quite some time ago, using the polargraph controller software and some firmware.

I have recently bought a new laptop, and a the moment, im trying to get the polargraph working for an exposition at my faculty tomorrow.

My polargraph machine does not have a SD reader or touchscreen, and uses stepsticks.

I downloaded the newer version of the software: version 1.2.4. But this version seems to have trouble communicating with the older firmware on my arduino uno: it starts moving, and then doesnt stop moving.

Which firmware should I upload to my uno to get it working again?

Hope you can help.

merijnpen
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Posts: 19
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Post Re: firmware for my old polargraph
on: November 20, 2012, 14:47
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When I upload the polarshield firmware, there are lots of lcd errors...
merijnpen
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Posts: 19
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Post Re: firmware for my old polargraph
on: November 20, 2012, 15:21
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Nevermind! Uploaded the old firmware, and it works like a charm!
sandy
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Posts: 1317
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sandy
Post Re: firmware for my old polargraph
on: November 20, 2012, 15:42
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Aha! Good stuff. What's the name of the old firmware? Did you amend it yourself?

sandy
merijnpen
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Posts: 19
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Post Re: firmware for my old polargraph
on: November 20, 2012, 15:58
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It was the firmware you gave me when I was building the machine several months ago.

http://code.google.com/p/polargraph/source/browse/embedded/branch/polargraph_server_serialstepper_itead/polargraph_server_serialstepper_itead.ino

I think it does not support some of the commands in the new controller though.
Is there one that I could run on my simple no-lcd, no-sd polargraph??

thanks
sandy
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Posts: 1317
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sandy
Post Re: firmware for my old polargraph
on: November 20, 2012, 22:25
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Ha yes, I remember now. The lines you'll need to edit are

// pin outs for the ITEAD motor driver shield
const byte motoraStepPin = 2;
const byte motoraDirPin = 3;

const byte motorbStepPin = 6;
const byte motorbDirPin = 7;

And add in the pins that your particular circuit uses. That said, that firmware is a bit old, there's been a couple of significant fixes since then - the straight line stuff it a bit better now.

I would recommend using the polargraph_server_a1 branch instead but modify the file in it called configuration.ino to use the stepstick motor definitions instead. They are in the second half of that file. I _think_ that's all it'll need - but I couldn't swear to it!

good luck

sn
merijnpen
Newbie
Posts: 19
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Post Re: firmware for my old polargraph
on: November 21, 2012, 07:53
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Thanks, yes. The old firmware was working. 😀

I was trying to modify the a1 version before. But when I set the configuration to stepstick I get several errors on commands that I think are for the lcd. Didnt get these fixed.

For now I will use the old firmware, thanks a lot!
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