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  1. MP1

    EAGLE USERS...i nid some assistance....

    I use F09HP, which is a female DB9 sitting on the board hoizontal. You can also use F09HPS which is the same connector but with a different schematic symbol. The F09VP or F09VPS will sit on the board pointing straight up if this is the style of connector you want to use. If you will be using a...
  2. MP1

    Ultrasonic transducers free samples?

    Didn't I already see this post somewhere? MP
  3. MP1

    Connecting multiple PC's to one monitor, keyboard

    You can make a switch box with CD4066 bilateral switches. MP
  4. MP1

    Mysterious Resistor?

    Shahriar, ignore the comment posted about not needing Cx. All op-amp circuits should have this capacitor. This capacitor will block the DC component, but also serves as a filter for the input frequency. The correct combination will help eliminate frequencies you do not want to amplify. Let me...
  5. MP1

    Designing a computer based voltmeter

    GPG, could you snag the schematic and post it here? I got a little lost going through the threads to find this in the other forum. I get caught up reading all the posts and lose my focus. Thanks, MP
  6. MP1

    Stupid op-amp question

    GPG, good of you to notice. Audioguru strikes again with redesign of something that already works... I am sure there will be more to come... MP
  7. MP1

    PCB software

    Here are a couple of links that are pretty good tutorials for Eagle. http://www.interq.or.jp/japan/se-inoue/e_eagle.htm http://www.precma.com/informatica/tutorial.htm MP
  8. MP1

    Designing a computer based voltmeter

    The ADC channels on both of these chips are linited to 5 VDC. I was hoping to make sense of the link to see how they were able to pass this voltage limit in their design. MP
  9. MP1

    Circuit design and simulator software

    Eagle is also free, but I do not think either of these software packages mentioned offer a simulator. MP
  10. MP1

    eagle drawing(SOIC to DIL socket 8pins)

    If you are wanting to place the surface mount chip inside the through hole chip, it will take a multi-layer board to do so. The pins are too close to run enough traces in between them. You can put the chips side by side and use a double sided board with vias. MP
  11. MP1

    inverter

    Pricing please........I do not want to leave this forum to look. ;D MP
  12. MP1

    over unity is here

    The posts on this forum should not be dependent upon posts on another forum. There is no reason a complete conversation cannot be made here. MP
  13. MP1

    Adams Motor Project

    Could you post a diagram of what you have built? I think there are only a few people here who are able to follow your conversation. MP
  14. MP1

    trough hole on double layers PCB

    Use a layout program with an auto-router. The program will take the burden of the layout. MP
  15. MP1

    PCB software

    Yes, you go to layers and turn off all layers except what you want to print. For example, if it is a two sided board, you turn off all layers except the top trace and print, then go back into layers and turn the top trace layer off and turn the bottom trace layer back on, then print again, etc...
  16. MP1

    Designing a computer based voltmeter

    Suraj, Are you familiar with the project in the link you posted. I saw this earlier when I was looking for AVR based voltmeters, but I do not see how this unit accepts an analog voltage. There is also no source code posted so I was not able to check that. I was hoping you might know something...
  17. MP1

    3-Axis Stepper Controller

    I have noticed that some programs are very dependent upon the processor speed of the computer you are using. In this case, it is trial and error until you find the perfect speed. Are the bearings manufactured by you or is it something you had to purchase? I was curious about the binding. I have...
  18. MP1

    Digital meter circuit with rs232 output?

    RS232 is a communication protocol. You will need something to implement this. Since you are talking about millivolts, I would use a micro with an Analog to Digital Voltage converter built in. MP
  19. MP1

    Electronic Stethoscope

    Emad, Just out of curiosity, did you use a shielded cable when you built the original circuit? MP
  20. MP1

    eagle drawing(SOIC to DIL socket 8pins)

    attach the eagle schematic file and board file that you have made and I will look at it. I am not sure exactly what is not working for you from the description. I will re-post it. MP
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