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  1. MP1

    Photodiode to extend LED on settop

    Yes it was the wrong place. You posted in an area that clearly states it is only for discussion of the projects in our project section. I have moved your post to a more suited area where you might get some response. MP
  2. MP1

    Free sample chips!

    It would be wasted time since this information changes on a daily basis. Besides, that would be a very large undertaking for someone. Are you aware of how many electronic components one would have to go through? This enormous number grows daily. It is a wonderful idea, but someone would need to...
  3. MP1

    circuit design

    From what you have posted, I see no reason why the substitution would not work in a stepper application. MP
  4. MP1

    Free sample chips!

    Hey, no apologies needed. Glad you have succeeded in getting your samples. I have also noticed the PDIP package beginning to disappear. Seems I do a lot of soldering under the microscope these days. MP
  5. MP1

    circuit design

    It sounds like you are looking for a short cut. Of course, taking short cuts will allow the chance for mistake. You should compare all parameters of the data sheets. That is why they are written. Mostly, compare voltages, current ratings, and timing. Please note that timing (speed and delay) of...
  6. MP1

    circuit design

    You should go to:  http://www.alldatasheet.com/ and download the free data sheets for these devices and compare the specifications. You should always refer to the datasheets whenever you wish to make a substitution. MP
  7. MP1

    Free sample chips!

    After submitting, you should have seen a page that tells you the order is not yet placed. It confirms your mailing address and you have to press another button to go to a confirmation screen. It will confirm the order and you will simultaneously get an email. It sounds like the last step did not...
  8. MP1

    Free sample chips!

    You should get an email confirmation that gives you an order number and lets you know the shipping address where the samples will be sent. If you did not list your email address, you will not get the confirmation. MP
  9. MP1

    Led display Digital Voltmeter question

    You should not have the problem of current limitation needed, but others who have built this circuit have complained about the display numbers being a little unstable without real good regulation on the power supply. I recommmend bypass caps at the very least. MP
  10. MP1

    Led display Digital Voltmeter question

    Could you please post a drawing or explain a little more? MP
  11. MP1

    rf coil

    SM2, The second part of my post was directed at members who stumbled into this thread by the subject line, "Bandpass Filter" BTW: I think arsal is going in the right direction to learning all about filters, what he can do and what he cannot do. MP
  12. MP1

    wireless transmit & receive data

    This is probably the simplest method: http://www.wrighthobbies.net/examples/wirelessdata.htm MP
  13. MP1

    frequency generator help

    cr555, Here is a 555 calculator that will be helpful to you. Enjoy! MP 555calc.zip
  14. MP1

    The untouchable wire.

    I always use a small solder pot. Flux the wire end and dip. That is all there is to it. Nice clean shiny tinned wire every time. MP
  15. MP1

    Led Needed

    For what it is worth.....I have purchased several hundreds of the "Bag of LED" deals from Circuit Specialists in the past. Have never had a problem with them. They are standard brightness LEDs and are not like the newer super bright ones that are available today..... but then, I am from the...
  16. MP1

    3-Axis Stepper Controller

    They are not pin for pin compatible chips. I recommend that you compare data sheets. You will need to make a number of changes. Allegro has discontinued this chip but you can still find them around. You can still find them at alltronics: http://www.alltronics.biz/cgi-bin/category.cgi Circuit...
  17. MP1

    Free sample chips!

    Good to hear they have arrived!
  18. MP1

    Convert 0-30V 3A PSU to 5A or more

    Yes, you certainly do. It is really nice to see a project come together like this. Congratulations, Kain! MP
  19. MP1

    Eagle layout editor.

    Here is an add-on library for Eagle that has SMT audio jacks. Hope it is helpful to you. MP con-cuistack.zip
  20. MP1

    Free sample chips!

    I usually get a confirmation email stating 2-7 days delivery and a phone number to call in case they do not arrive. Have never had a problem. You should call and inquire. MP
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