Roger K.

Member Since: August 25, 2012

Country: United States

  • Product COM-11554 | about a year ago

    My 11 y.o. daughter is having a blast with these panels! I made her a little UV LED pen which draws very nicely on the panel. I also made a “camera” by taking a 12" cube cardboard box with a 4 inch diameter hole in one side, attaching a 4 inch diameter magnifying glass to the box and placing the photoluminescent panel inside. Cover the lens, take the box outside on a bright sunny day and uncover the lens for about 10 seconds, then run back into the house. It makes an amazingly good quality POSITIVE image (that is, bright is bright - unlike a NEGATIVE). After about 15 minutes, the image fades and another “picture” can be taken. These panels would be, in my opinion, a GREAT present to buy a 5 to 15 year old kid as a stocking stuffer. Buy more than one, so one panel can “fade” while the other is being used.

  • Product COM-10597 | about a year ago

    These make an awesome diffuser for RGB LED’s!

  • Product COM-09642 | about a year ago

    A three terminal regulator (7805 or LM317) with a resistor between Vout and Adj makes a fine constant current regulator for LED arrays or LED backlights. Of course, it’s linear, so any excess power is dumped as heat… but it’s simple and cheap.

  • Product PRT-09390 | about a year ago

    Here’s a hint: Use these along with the long male header pins ( https://www.sparkfun.com/products/10158 ) broken into individual pins and you have a male connection any time you need it!

  • News - Conductive Fiber and the … | about a year ago

    That looks like a sinister torture device for a huge caterpillar!

    “Vee have vays of making you talk!” LOL

  • Product PRT-10158 | about 2 years ago

    Ahhhhh! Need headers! Hurry up and restock please!

  • Product KIT-10930 | about 2 years ago

    This is a useful little kit not only as a clock but also as a generic display device. If only the designer had not used all of the analog input pins to drive the LED segments… this little kit could have made a nice custom panel meter (maybe to display voltage or current?).

    One suggestion: This kit NEEDS a 28 pin 0.300 wide socket for the 328p chip. Radio Shack doesn’t seem to carry 28 pin narrow sockets, but TWO 14 pin sockets in-line work just fine!

    Here is a link to a photo of my board with two Radio Shack sockets installed: http://www.gunsnet.net/photopost/data/500/medium/clock-kit-socket.jpg

    One last suggestion: This board should have a place to install an optional 3 terminal regulator (either through-hole or SMT) since it would be nice to use a 9v or 12v wall-wart instead of just 5 or 6 volts.

    Otherwise, wonderful kit! It was loads of fun to assemble.

No public wish lists :(