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 Since: February 21, 2010

Country: United Kingdom

  • Plugged the AVR stick in started logging straight away - 0 on both PB4 and PB3. Couple of resistors on PB4 started logging 2557 corresponding to 2.57 volts.
    However, the only way I can get PB3 to change from 0 is to put much too low value resistor to Vcc. PB3 appears to be sinking current??
    Is it configured as an output to drive the LED?

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