Member #127854

Member Since: April 1, 2010

Country: United States

  • Product BOB-08688 | about 2 weeks ago

    The data sheet shows an input capacitance © of 16 pF. The breakout schematic shows a 10K resistance ® in series. R*C = 160 nS; the RC time constant. Lets call it 200 so that 5 time constants is 1 microsecond. So my, rough guess, expectation is that you should be able to get at least 500 kHz “bandwidth”. My guess is that it would handle any “fast” Arduino project, for example a lightning flash sensor. Another post (Skye) indicates a 15 usec response. Still fast enough for most general light sensing. I think its time for me to get one and test it!

  • Product DEV-12646 | about 2 months ago

    According to https://www.pjrc.com/teensy/teensy31.html the teensy 3.1 is green and it has a 12 bit analog out. The image on this page seems to be a version 3.0. All the rest of the information seems to be up to date.

  • Product COM-11747 | about 8 months ago

    At 5V the 51 ohm current limiting resistor this string light uses doesn’t exceed it’s spec. (assuming it is a ¼ watt resistor). It drops about 3V with 59 mA of current through it. You can power the string with an old unused 5 VDC cell phone wall wart.

  • Product COM-11752 | last year

    I removed the 39 ohm resistor that came with my soft white string and replaced it with two 100 ohm 1 Watt resistors in parallel (50 Ohms). I powered the string with a 9V DC adapter (just like TOL-00298) using a DC barrel jack adapter (PRT-10288). Everything stays within tolerances (nothing gets to hot or overloaded) and it made a very nice light for my wife’s art deco display cabinet. Its been in use for two weeks without problems as of the time of this message being posted. Very Nice!

  • Product COM-11442 | about a year ago

    Wow! A $13 Arduino (Arduino compatible) with a built in display. Excellent!

  • Product CAB-11515 | about a year ago

    Horrible… yeah, but I’m still putting 3 of them my cart just the same. The horror! The horror!

  • Product COM-11443 | about a year ago

    Good job Sparkfun! Mounting holes… it seems to be catching on. I am grateful! Keep it up. Hopefully the pro micro is next in line for holes of it’s own.

  • Product DEV-11589 | about a year ago

    I agree. As much as I enjoy seeing the new Arduino progress, I have been a little worried that this (Arduino Due) could affect leaflabs adversely. I have really enjoyed creating maple sketches. I appreciate the super fast math and high resolution PWM (16 bit) and analog to digital conversion (12 bit) on the maple. The leaflabs web documentation is very good. I hope things continue to progress and go well for them as well.

  • Product DEV-11589 | about a year ago

    Wow. I didn’t know this was in the works. Very cool! I’ve been creating a new data acquisition system using the Leaflabs Maple (which is very similar to the Arduino Due). If past performance is any indicator of future trends, there will undoubtedly be a Sparkfun miniature variant! What would they call it??? Will there be a Sparkfun pro Due? There was a mini, there was micro, it seems inevitable…. whatever they call it (neutrino sounds good to me) I’m sure I’ll get one immediately. What do you say sparkfun? Just do it!

  • Product DEV-11098 | about 2 years ago

    This is a great little Arduino-Leonardo variant… but the software serial library seems to have some glitches running on it. That prevented me from using the great sparkfun 7-segment serial displays the way I wanted to with the pro-micro.

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