SparkFun will be closed Nov 26th and 27th for the Thanksgiving holiday. Orders placed after 2:00pm MT on the 25th will ship out Monday the 30th.


Member Since: January 18, 2013

Country: United States

  • I’m not sure what I’m doing wrong. (n00b warning).

    I’ve got the following project working with my uno (http://blog.makezine.com/projects/make-34/the-dryer-messenger/) but when connecting the wall wart dc jack to the pro mini I keep blowing it up. I connect the positive from the jack to “raw”, then the negative to the ground on the mini board. I get a red light on the pro mini blinking fast and also the wall wart has a red light that begins to blink.

    I’m not sure what I"m doing wrong. but the board powers up fine with a FTDI friend.


  • I’m a big n00b, but what resistor values should i use for this with an arduino or attiny chip?