Member Since: April 7, 2011

Country: United States

  • This might be too late, and I didn't test it myself (although I'm building a circuit like this, will update the reply when I test it myself.
    I've read that the 100mA limit is working only if a device is connected to the USB port. If you leave D-/+ pins disconnected, the port thinks there is no device, so it doesn't bother limiting the current to 100mA (but surprisingly power is available anyways.)

  • I suppose you switched the 330 and 390 resistors of the LM317, not the 330 current-limiting resistor of the LED.
    Desolder them, or you'll get only 3V at the 3.3V setting. Bear in mind the resistors around the LM317 set up the ouput voltage. The output voltage selector in 3.3v shorts to ground after the 390ohm resistor. There you have 330 ohm, which if you calculate with an online LM317 calculator is barely 3volts. If left unshorted (5v) both resistor values are summed up, so it doesn't matter if it's 330+390 or 390+330, but it does make a difference if shorted.
    If you switched the LED resistor and the 390 resistor, ALL output voltages will be messed up (barely 3v and 4.7v)

  • Well, I have to agree with dattaway2. I live overseas (Spain!) and finding hobby electronics supplies is hard for me. Common components are easy to find, but that's it.
    AVR microcontrollers are literally unknown around here. I asked at several electronic stores and nobody ever heard about them, let alone have any stock. They tried to find, but had a hard time doing so, and only found suppliers with a minimum 1000 order per article. I found a distributor in Spain (and some more in Europe), but they're just SparkFun's distributors, are very short in component variety and stock, the shipping costs weren't that cheap and the components were a bit overpriced. And I would've had to buy from lots of different stores to get all I needed, so no benefit there!
    The only microcontrollers I can find around are PICs, but they're very expensive compared to SparkFun's prices, programmers are very expensive too and not too many different models (no USB PIC for you!!) General ICs and other common components are much cheaper here, tho.
    SparkFun made my life a lot easier. Although shipping costs are expensive for me, it pays. Lots of different (and fun) articles, great prices, great customer support and a VERY nice community built around the website.
    Oh, and I appreciate the honest business too. Component descriptions are so honest, I've read reviews like "this article is very bad quality" or "this is a mess to drive, nobody ever got it working". I guess it's better to keep a customer happy than getting crappy stock out of your warehouse (specially with hackers amongst these customers hunting for cheap crap to turn into gold.) Good choice IMHO.
    No wonder why they're callesd SparkFUN!

  • Tilt sensors don't give you rotation measurement, but fixed orientation instead. Either it's or it's not oriented in some way, but you cannot measure how much it rotated or anything like that.
    Think of tilt sensors as "is my device roughly oriented towards this axis?" and gyros as "how much is my device rotating around this axis?"

  • Did you or anybody else finally make it work in Linux?

  • How long is the USB cable? I assume I can use the cable with the Pocket AVR Programmer, right?

  • Thanks!

  • I'll answer myself one of the questions: according to the description and the photos, the AVR programming cable (DEV-09215) is included.

  • Let me get this straight: this device, USB Mini-B cable (CAB-00598) and an AVR programming cable (DEV-09215) will do? And then I just plug the programming cable to the correct IC pins in-circuit?
    Has anybody tried it with an ATTiny2313?

No public wish lists :(