Hi processing forums!  I have been working on a project for logging sensor data from an Arduino.  At first I thought that this would be a great language to use, I'm not entirely sure yet.

Anyway, I want to draw a graph that updates with the serial data from the arduino, & was going to use lines or dots to plot the value over time.  This would work best if I didn't upgrade the background(); every time I looped through the draw routine.

But I also wanted to display the text of the actual data as well...

My problem:
If I don't update the background(), then the text just overwrites itself into a blur.  If I do update the background, then the line/dots I draw are lost to the refreshing of the background.

Is there a way to do both?

Or maybe there is a better language to interface the serial data from the arduino?  I DO really like the fact that you can export directly to an applet, but the applet wouldn't run at first due to Java's security restrictions, & i had to edit a text file to disable all security... for lack of finding an easy way to just disable it for that one applet....

Anyway, ideas?  Also, are there any libraries that draw a graph?  I will write one myself, but would rather not reinvent the wheel.

Thanks!

Thanks for the response Philho!

I'll try drawing the rect, I suppose that was simple wasnt it?  going to give that a try right now.

Thanks for the response Philho!

I'll try drawing the rect, I suppose that was simple wasnt it?  going to give that a try right now.

But well, unless people have the exact same hardware as you, there is little point to run from a Web browser, no?

I wasn't sure if it would work or not, my plan was to have a webserver at my house display this graph & the output of the arduino, for people to be able to view, maybe I'm not going about this the correct way.