Philip wants to see this ST 3 axis MEMS accelerometers User selectable +/- 2g and 8g ranges. IIC interface with dual independent interrupts for when you really need to know. (Programmable timing and thresholds in 3 axes for interrupts) 10,000 g survivability. ("The Eagle has (crash) landed".) 3 x 5 x 0.9 mm LGA14 0.8,, pitch. Under $US5 / 10K quantity. http://www.planetanalog.com/showArticle.jhtml?articleID=193105023 Target applications are hard disk free fall protection (park the heads if you drop your IPod, laptop or whatever before it hits the ground, and motion controlled human interfaces (wave your cellphone this way to transfer a call, that way to ...) Data sheets http://www.st.com/stonline/products/literature/ds/12726.pdf http://www.st.com/stonline/products/literature/ds/12725.pdf Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist