This thread is recommended reading in its entirety:
http://www.internettablettalk.com/fo...hlight=arduino

Near the end D-Rock posts code samples of how he actually talked to his arduino from his 770.

Needing java means that the IDE won't work directly on the tablet. But you're mainly using the IDE to write a small bit of code like the "sketch" that D-Rock shows. Your sketch would just sit in a loop and output analog voltage readings on the USB port as fast as it could. Once you have that working, there's really not much need for the IDE. The rest of your code is written on the tablet in whatever language you want to process those voltage values coming in from a usb-serial port. I recommend python for that task as a forgiving and featureful language.

You could try something like this:
http://sine.ni.com/nips/cds/view/p/lang/en/nid/14604
It's listed as a Linux compatible device.

i got my N810 read serial data from Arduino. N810 supplies enough power in host mode to get Arduino working.

i got python script to redirect all serial stuff to TCP port. so i can connect from laptop over to n810 and use telnet to talk to arduino "serially", maybe it will be easier for flash, dunno. it would be better if someone could compile "serproxy" for me, i have no linux and scratchbox and no knowledge to compile serproxy for maemo. it should be as easy as "make" from the source (available: http://download.berlios.de/arduino/s...-0.1.3.src.zip ). if someone could do this, i`d be grateful!
time for some sleep..

this project was realised and pretty dead now, cause the arduino board died. but it was major success, see my page - nitgauge - n810 arduino display