Member Since: May 31, 2006

Country: United States



Hardware/embedded firmware design engineer



  • Product KIT-12634 | about 4 months ago

    Why is one pin cut off from the processor chip? There’s certainly enough space on the board to have included the pad for that pin…

  • News - Cyber Monday 2013 Recap | about 5 months ago

    It would be nice to have some way of combining the shipping for the hourly discounts. Now, you had to pay shipping once per purchase (ie, once per hour) even if you only wanted one board from that batch of discounts. It wiped out the savings on some of the smaller items.

  • Product COM-11041 | about a year ago

    When mounting this board, use nylon screws. The screw heads come way too close to the high voltage traces and could electrify your enclosure.

  • Tutorial - Controllable Power Outlet | about a year ago

    When wiring the GFCI, make sure the neutral wire (normally white or blue) is connected to the silver-colored screw. It looks like it may be backwards in the picture above, and if so, can be unsafe.

  • Tutorial - Adventures in Low Power Land | about a year ago

    In your schematic, you have Aref tied high. If the ref mux isn’t set to external reference, you can be drawing some current thru it (worst case, if you set it to internal reference, you are tying the output of the on-chip bandgap to Vcc)

  • News - July Caption Contest Time… | about 2 years ago

    Amazing what you can do with an Arduino these days…

  • Product PRT-11244 | about 2 years ago

    Since they didn’t mention it, these are tantalum capacitors. The end with the stripe (usually) is the positive side. Also, they must be derated for safety; I wouldn’t use a 16V tantalum above 8-12V

  • Product DEV-10618 | about 2 years ago

    The board only uses one of the 5V pins, so that will limit the maximum current on the “5v” side

  • News - 1st Annual SparkFun Elect… | about 2 years ago

    For a real smt challenge, look at http://www.delorie.com/pcb/smd-challenge/

  • Product KIT-10733 | about 2 years ago

    As mentioned, DO NOT use the mouting hole in the corner by the “normally open” label. There is no clearance between the screw head or thread and the copper pour. At best, you will blow your fuse if your case is grounded. At worst, it could cause a fire or shock.

    I would not use this above 52v until the spacing issues are fixed.

No public wish lists :(