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Member Since: April 17, 2010

Country: United States

  • Thank you for the tutorial.

    I highly recommend Kivy - at least for the applications that we use it for. At my company we are using it for in-house test equipment and have made roughly half dozen factory fixtures using it. It is used as a display of values and to accept user input and we have done a little bit of simple live graphics with it. For our use it has been rock solid.

  • sorry, but I've got a dissenting opinion here. Sure! I had some fun with a kit like this as a kid but it really was poor at teaching electronics. I had this kit and nothing else and because of my lack of progress I went to school to be a mechanical engineer. Now in my 40's and making huge progress in electronics thanks to Sparkfun, the internet, blogs, etc. I don't see how this kit could have taught me so much.

    As an example, the first circuit in the book has a transistor. Even in my college electrical 101 we did not cover transistors (separate topic actually). This topic is too advanced as a starting point. Another example, the explanation about diodes on page 7 states there are silicone and germanium diodes. Why does a beginner need to know this?

    The turning point for me was putting together a simple circuit to set a specific amount of current through an led. To get this to work you have to absorb the concept of the forward voltage drop and of course employ ohm's law. After I understood that, went to transistors for higher current and I was off and running.

    I think the kit is ok to play with but I would not rely on it for teaching a beginner.

  • many of these use the same nRF51 chip from Nordic. Differences are with the libraries, bootloader, number of pins, etc. The most notable thing about Simblee in my opinion is the small, relatively easy to solder package and the fact all the pins seem to be available.

  • I have a way to answer that, PhillyNJ. Actually they are not very similar, I've been using electric imp for a long time now, almost since it came out. I've also been reading about what it takes to set up the ESP8266 and have one but have not connected it yet. I venture that electric imp is like a Toyota Prius and the ESP8266 is like an old Geo Metro. Both are good commuter cars and both will save money in a way. The Prius has a lot of upfront cost and then it just works. The Geo is cheap all around and can also work with some effort.

    With electric imp you get a cloud computer with each piece of hardware in a 1:1 relationship and they are programmed in a split-screen IDE using the same language. The system works really well and I enjoy having the same language on the hardware as in the cloud computer.

    I would think each device has it's own customer type.

  • I made a watt meter using electric imp and ADE7953 energy meter chip. As many know, the old light bulbs have nearly a perfect 1.0 power factor. You can see some examples here http://themzlab.tumblr.com/wattmeterwaveforms

    The Cree light bulb that I checked appears to be attempting power factor correction and achieves 0.97.

  • It has happened to me. Some old and slow-moving software was written for IE and only IE back in the day. At work you are stuck with those tools for the moment and so yes, this happens. For example, ADP suggests IE, FF or Safari, no mention of Chrome. It used to only work on IE but now I use it with Chrome.

  • good, but I laughed the most at the one with the Yakov Smirnoff reference

  • all right, the first person that falls asleep...

  • Actually, technically it does work this way. A finite amount of energy or power causes the wind to flow. If there is sufficient drain on this the wind will slow. I don't know about the relative magnitudes but wind turbines do subtract from the power of the wind.

  • no, it will not : )

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