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SparkFun will be closing early at 3:30 Friday 5/27 and remain closed Monday for Memorial Day (5/30). Orders placed after 2pm MT on Friday (5/27) will process and ship out on Tuesday (5/31).

Member #419717

Member Since: March 16, 2013

Country: United States

  • As an avid swimmer, I have thought it would be cool to put a waterproof RFID tag on my swim goggles and have an arduino or other microcontroller count my laps and show my split times on a waterproof wall mounted display. Using RFID tags would allow multiple swimmers per lane to use the same display.