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  1. MP1

    MOVED: But can anybody tell me what is goin on in Silicon Chip website

    This topic has been moved to [Electronic Resources].
  2. MP1

    LED panel tester

    tnk2k has a good suggestion. Most manufactured equipment has such a power up mode where all segments light when the device first comes on or a button to hold in to see all segments light up as a test. It sounds like the problem is more about the time to go through the test and not necessarily...
  3. MP1

    MOVED: Idea for IDEAL (!!!) AC-DC Converter

    This topic has been moved to [inventive/New Ideas]. http://www.electronics-lab.com/forum/index.php?topic=3165.0
  4. MP1

    Optical guitar pickup

    Hi Ed, My post was meant for moeburn. Don't know why I put your name on it. Sorry for the confusion. Yes, it was a reply for moeburn and had nothing to do with your post about DSP. MP
  5. MP1

    Optical guitar pickup

    Ed, the vibration of the string is the same in all directions from the core for the string frequency, which is where the magnetic pickup excels. In a visual system, you would need to take into account that when the string is plucked, it will have a sideways movement, which can be different each...
  6. MP1

    Duplicate threads and circuit requests.

    The only item I disagree with is that microelectronics is not microcontroller. It should have it's own place. ...but you should be aware that this is an International forum and that interpretation will always be something that will suffer. This is in reference to the meaning of the words used...
  7. MP1

    Sound To Light Box help

    stuee, It is doubtable that the mic has 240 volts on it. I have never seen a color organ or similar circuit that did this. Close view of your picture shows a foot print for the mic; The traces look like they connect to some ICs on the board and some capacitors and resistors; Verify this and you...
  8. MP1

    DIGITAL STOPWATCH(Chronometer)

    Many users come here for help on a project that they must complete for school. MP
  9. MP1

    Convert 12 volt DC to 120 volt AC

    SemSem, to answer your question: Yes, this is a very simple low output square wave inverter. It is very similar to a design that Delco made several years ago. You should be able to find many variations of it on the web and many other square wave inverter circuits as well. Please ignore the ones...
  10. MP1

    3-Axis Stepper Controller

    Yes, there are some programs out there that do not allow for this. That is what makes it necessary for a particular pin out when making a "one size fits all" type of board. Otherwise you get a lot of grumbles from those who use such limited software. Since you have the capabilities with all of...
  11. MP1

    How to sens a laser with No error?

    Shahriar, What usually causes false triggers in a laser sensing circuit is the outside light such as reflections from other sources, etc. This, of course, is dependent upon what you are using for a sensor. By recessing the sensor in a tube and insuring perfect alignment of the laser, you will...
  12. MP1

    3-Axis Stepper Controller

    Greekpic, The pin assignments were setup to match generic software packages. If I understood correctly, then the pulses from generic packages such as DanCad will no longer work. I did the same thing several years ago and wrote my own software. It was not until later that I realized my board with...
  13. MP1

    Radio Frequency Communication (RF)

    upneet, All of the rf chips I have seen need a driver for RS232, so what Alun has suggested will work fine. MAX232 has become quite the standard. If you cannot find these dedicated chips in your area, you can make the same thing with a couple of common transistors and discretes. In addition to...
  14. MP1

    PT100 Temprature Semsor

    First, you will need a precision resistor with a tolerance of .01% or you will have drift all over the place. Then run the resistor from the excitation voltage to the input of the AD converter. Then connect the temp sensor between the input of the AD and common. Then you will calculate the...
  15. MP1

    Conversion of square wave to sine wave

    So let's start helping people out when they ask a question (or not reply). It takes as much effort to grumble at people for something we have seen posted in the past as it does to post an answer. I think it is kind of cool that this will be the first place someone asks a question instead of...
  16. MP1

    designing of third harmonic filter

    Sarwar, The discussion of blocking the third harmonic is usually associated with mains voltages and motors. Is this what you are referring to? MP
  17. MP1

    EYE SIGHT SENSOR

    Prateek, Interesting project. Here is a link that might help you with your research regarding the human eye. http://www.photo.net/photo/edscott/vis00010.htm MP
  18. MP1

    mp3 player from hardisk

    I posted a link to a site in reply #1 (scroll up) where you can find all the hardware and firmware needed to make several different versions of a Hard Disk mp3 player. Yes, it does require programming a microcontroller. But that is not so hard since the code is also given to you on the site. I...
  19. MP1

    Shaft Encoder

    There is a big difference. Where categorization of the other items can be debated, there is no question that a datasheet is a datasheet. There is a specific area on this forum to request these. Requests for datasheets should be posted in the correct area if the person posting it wants to get a...
  20. MP1

    Soldering Station Confusion

    Maybe there is some confusion there, but I was referring to a temperature controlled iron in my description. Set it to a certain temperature and leave it there for your work. My preference is to have the digital display. The reason you have this option (settable temp) is so that you can use it...
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