> I am thinking of implementing an USB host on a data > logging device and are looking at various method of > doing it. My final intention is to attach a pen drive > ( which are cheaply and readily available ) to the > data logging device and remove it after a month and > copy whatever data stored in the pen drive to a pc. > From information gathered on the net, it seems that > most USB host are implemented on higher end micro > processor. I intend to build the USB 1.1 host that > will only access pen drive. Take a look at the Cypress SL811HS chip. Provides USB host interface and hooks fairly easily to a PIC CPU. Lee Jones -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist