| http://www.w3.org/ns/prov#value | - do not own a Uno, but do recall reading here that there is a problem if a prior loaded sketch starts right off blasting serial characters following a reset (either power up or via auto-reset preamble to uploading) the 8U2 chip (emulating a usb serial converter) does not initialize correctly and gets kind of locked up preventing any further downloads from working.
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