Hi

We're building a polargraph on top of a aduino pro (it was lying around in the lab).

After a lot of trouble uploading the firmware we finaly have it running.

When i go to the arduino serial console, it write some random stuffs, but if i change the baudrate to 28800 i get the proper messages :

POLARGRAPH ON!
Loaded machine width:650
Loaded machine height:650
Loaded mm per rev:65535.00
Loaded motor steps per rev:400
Recalculated pageWidth in steps (43789)
Recalculated pageHeight in steps (43789)
Loaded machine name:ÿÿÿÿÿÿÿÿ
Recalculated mmPerStep (20.48) and stepsPerMM (0.05)
READY
MEMORY,512,END

But we are not able to set the baudrate of the polargraph controler =(

We found that if we save the configuration in a file, there's a baud rate variable, but even if we change it manualy and reload the config, the device is still not found by the controler.

Now we're going to search in the sourcefile and recompile the controler with the proper baudrate, if you have any ideas, it's more than welcome !

didn't mention but we test each time on win 7 and os x 10.8

finaly we get it to be recognized on the mac ... by saving the properties with the right serial port and then reload the apps directly from the source...

we're able to fix the home point wich block the stepper, but nothing else for now ...

we're moving forward 🙂

Isn't there any speed negotiation between arduino and the computer ?
That's strange that i can only make it work after changing the reading to 28800.

I've uploaded the hex firmware on the board ... at a speed of 57600 ( with a commandline avrdude on the mac ) ... 🙂

Skill - good stuff. There was an issue with the last version that the baud rate you specify in the properties file would only work for the first connection - if you changed the serial port then it would automatically jump back to 57600. That's fixed too now.