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  1. MP1

    sound

    now that was real helpful... MP
  2. MP1

    Infra Red Remote control

    You can get the LM567 from Digikey (www.digikey.com) for 77 cents each. They have about 2500 of them in stock. Not exactly what I would call obsolete. The LM308 was not a very good op-amp. That is why it is gone. You would have wanted to replace it with something better even if it was still...
  3. MP1

    Free sample chips!

    anananh, I think you have to be a business or organization to get a Fed Ex account. Likewise with the sample chips. You have to register as an engineer or business to get them from Maxim. How did you register? Many companies will never send sample chips to students or individuals. MP
  4. MP1

    Free sample chips!

    kumaran, It has been 5 posts since this thread was about sample chips. I am surprised the moderator of this section has let it go. Yes, please post the conversation about your project in it's own place. I keep getting notices about new conversations to this thread and they are not about sample...
  5. MP1

    How Hard to Use Floppy For Flasher?

    actually, the code is almost the same for any drive type connection. They all use the same tecnique to recognize the drive. For AVR, you can find an application on the www.mcselec.com website in the applications section on how to do this with BASCOM AVR and the additional free library that is...
  6. MP1

    New, Nite Rider lights, Project

    audioguru, the author of the project only mentions to use the 555 IC (no specific type stamping) and to use CMOS version for all chips. You are making a mountain out of nothing. Nowhere in his reference do I misunderstand him to mean anything but that. He does not give specific part numbers for...
  7. MP1

    Led display Digital Voltmeter question

    I have no idea. It depends on what you have available or what you want to use inplace of it. Compare the data sheet of the one you will use with the MAN6960 data sheet. Data sheet is attached here. MP MAN6960.pdf
  8. MP1

    What Chip Converts Decimal to Pulse ..?

    ok, I see. I just read it again. Switching between touch tone and pulse. MP
  9. MP1

    7-segments display using LED!

    Why even bother with the other chip? It is only saving you one port pin on the 2313. You could code these lines as well and save the cost of a chip and save board space. You are just sending ones and zeros to the port pins. Of course, if you use more than one array, you will be short a few...
  10. MP1

    New, Nite Rider lights, Project

    ;D ;D The project text already says to use CMOS for all ICs. MP
  11. MP1

    What Chip Converts Decimal to Pulse ..?

    Mhz, You are talking about DTMF. MP
  12. MP1

    Anything Reasonable other than Drilling?

    Mhz, If you really want to use a punch, these are available and very easy to use. Punch sets come with a variety of hole size dies. The smallest will be larger than you need 3/32") and you will have to make the right size pad to use this method. The nice thing is, you will also have the sizes...
  13. MP1

    how to calculate??

    A good rule of thumb....wait until they post the rest of the schematic when they ask such questions. See his other post (with the complete schematic). He is about to fry a PIC. :o MP
  14. MP1

    voltage controlled oscillators

    audioguru, you are welcome. Also note that I posted exactly what luzell asked for instead of telling him to try something else. You might consider this sometime. There are times when students come onto the forum looking for help with an assignment they do not understand. Telling them to try...
  15. MP1

    Led display Digital Voltmeter question

    There is no reason to exhaust the subject or make repeat posts. I posted a link a few messages back. I recommend you look at the link. For more information on it, learn to use the search feature. It is posted at the bottom of this message. MP
  16. MP1

    Another INVERTER we can talk about..

    ante, do you have enough for everyone... ;D ;D MP
  17. MP1

    voltage controlled oscillators

    luzell, Sorry for the late reply. What you are looking for is here: http://physics.ucsd.edu/was-sdphul/labs/120b/exp4.pdf 74LS124 VCO set at 10 KHZ and adjustable. Looks like the geniuses have let you down so far... ;) Have fun! MP
  18. MP1

    Led display Digital Voltmeter question

    Emiliano, the final fixes for the project were posted in the Feedback section of this site. You can find the information here: http://www.electronics-lab.com/forum/index.php?board=4;action=display;threadid=353 NOTE: WAS MOVED. IS NOW HERE...
  19. MP1

    Computer Project - Grounding Question

    Eight, It really depends upon what you will use the computer for. I use metal cases to protect against radio interference and I use the case as a ground to the battery system. This is also the industry standard for instrumentation. Hope it is helpful. MP
  20. MP1

    remote control using radio freq

    Keile, You need to find a better place to shop for parts. You can get this whole kit for $40 or just the module for $13. This is a kit from electronickits.com The exact link for these parts or the kit is here: http://www.electronickits.com/kit/complete/elec/ck1616.htm Hope it helps you along...
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