johngineer

Member Since: February 10, 2009

Country: United States

  • News - Million Dollar Baby | about 4 years ago

    BernardOfCa: I am curious to know how Arduino is making $1M+ in revenue. Do they get royalties from H/W sold by others? If that is the case, doesn’t this break the principles of openess?
    On Parallax, it is actually sad to see that after all these years (and the Scenix saga) they are only in the $1M+ category. The propaganda on the Propeller IC says: “hand designed one transistor at a time”. Sorry but that’s the way IC’s were designed 40 years ago… It seems that lately they have tried to copy the SFE business model (more sensors, breakout boards, etc).

    The Arduino team makes the Arduino – the design is open, but the actual Arduino board (the one with the map of Italy on it) is manufactured by them, and they sell it and make money on it. This is as it should be. They do not make money on derivatives like the Boarduino.
    As for Parallax, I don’t know what to tell you. Bear in mind that there is a whole $9M worth of leeway between $1M+ and $10M+. And what’s wrong with mimicking another (successful) business model. It’s not as if they aren’t still doing work.

  • Product PRT-00338 | about 5 years ago

    How much does it weigh?

  • Product WRL-08766 | about 5 years ago

    Don’t know why my last sentence got scrambled, but I tried to say that it has less power (50mW vs. 60mW), and draws MORE power (295mA vs. 210mA).

  • Product WRL-08766 | about 5 years ago

    What is the advantage of this item over the 60mW (WRL-8710) XBee Pro? Granted, this one has 10 digital pins (as opposed to 8) but loses 2 ADC pins in the process (4 < 6). It also has less power (50 210mA), and costs more.

  • Product DEV-07914 | about 5 years ago

    Another request to offer this as a bare board (with male header pins to couple to Arduino)
    As others have said the full kit is great for prototyping, but once you have a final design and you’d like to hardwire it you either have to desolder the headers or buy another full kit. The cost savings of one board would not be much, but if you’re producing several copies it adds up quickly.
    Also it would be cool if the Eagle files (brd and sch) were available for this board, to use as a starting point for creating custom shields.
    Keep up the good work, SFE!

  • Product COM-08546 | about 5 years ago

    Nice item at a good price.
    A complete pinout diagram would be cool, since it seems the pins don’t align with the datasheet info.

  • Product DEV-07914 | about 5 years ago

    Just completed assembly. Easy to put together and a good layout. My only suggestion would be to put the switch and two LED terminals next to each other, where the user could put an optional 3-pin female connector. This would make it easier to connect to these from the breadboard.

  • Product DEV-00666 | about 5 years ago

    While I was pleasantly surprised to receive my Duemilanove with an ATmega328 installed (double the memory capacity – hooray!), I was less than pleasantly surprised to see the price drop by $5 less than a week after I bought it. :(

  • Product ROB-08420 | about 5 years ago

    This is a bipolar motor, as evidenced by the schematic (two coils with only end connections and no center taps). It only utilizes the inner and outermost pins. The two other pins aren’t connected to anything and applying voltage across them will not do anything. In fact, if both pins are connected to a common node (i.e. the housing) you may be shorting out the power source, which is not a good thing. If you want to increase the current through the coils you should either:
    a) use a motor driver circuit (such as the one listed below)
    -or-
    b) connect the Arduino control pins to power transistors and use the transistors to switch a higher current source.
    Hope this helps!

No public wish lists :(