dannygott

an i also had a question what logic shifter did you use. i was looking at this one http://www.adafruit.com/products/735?gclid=CjkKEQjwlIqdBRDy6JSK4Lmn1akBEiQAVa9dPWL_7nuDbofbOhaac_56UC4qflEtI-nfgbnhhsfeRcPw_wcB and i was wondering if it would work

i was tinkering arround with this and i believe u made a slite mistake. i think you meant /dev/ttyATH0 not /dev/ttu/ATH0 so the command would look more like echo "hello" > /dev/ttu/ATH0