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  1. MP1

    Automate Machine

    Privas, 8051 is a good architecture, and this looks like a very nice development board. Another alternative is the STK300 which allows both 8051 and it's big brother, the AVR to be plugged in. However, keep in mind that 8051 and AVR can be programmed in-circuit and you could just build a basic...
  2. MP1

    help!! AD595 Project

    avionic, Don't be discouraged if you find it does not have the jumpers. Most do. If yours does not have the jumpers, please note that the jumpers are just connections to on-board resistors for a voltage divider. In the case of no jumpers, it is a simple matter of using a voltage divider as...
  3. MP1

    help!! AD595 Project

    There should be jumpers on your display which allow for higher voltages. Check your data sheet. MP
  4. MP1

    MOVED: Radio Shack Special

    This topic has been moved to Datasheet/Parts requests. http://www.electronics-lab.com/forum/index.php?topic=5691.0
  5. MP1

    12V DC to 115V DC?

    A transformer will not step up DC. You must first convert it to AC with some sort of charge pump circuit. You want to convert your DC to an AC voltage; Use a transformer to multiply it, then rectify the voltage to DC. MP
  6. MP1

    Automate Machine

    Tony: Perhaps privas could explain more, but from his explanation it seems to me that he is only turning the existing functions (motors) on and off after a particular movement for which he has already incorporated proximity switches. Thus it only requires some switching and timing. Nothing...
  7. MP1

    Automate Machine

    privas, why not use lever action switches connected to solid state relays. This would get you a minimal switching action without learning to program something. MP
  8. MP1

    High Voltage Stun Gun !

    labtyd2, there is my point exactly. Just jump in like steven and you will learn these things by doing.  ;) The circuit you are asking about is found here: http://www.electronics-lab.com/projects/science/016/index.html The technical side: The basis of this circuit is a 9 volt battery used to...
  9. MP1

    High Voltage Stun Gun !

    There are lots of articles in the "Articles" section which will help explain things. Our high voltage guru here on the site is steven. If you have a question about how the high voltage part of this project works, you can send him a personal message to user name steven and he will receive it. If...
  10. MP1

    max038 project using Eagle 4.15

    When you go to the board layout, you will see all of the components connected together with air wires. By looking at these, you should be able to determine where the parts should be placed for the shortest wires. You can move them all around before routing. A tip: I usually try to place all of...
  11. MP1

    Need help with LCD displays....

    The display that uses the HD44780 can be used in the "LCD Display to computer" project in our projects section. I am not sure about the others. MP
  12. MP1

    High Voltage Stun Gun !

    Everything here is in plain English. This is a site for electronics enthusiasts. What are you having a problem to understand? MP
  13. MP1

    6 or 7KW Inverter Needed

  14. MP1

    What should I look for in a breadboard to buy one?

    The PB-10 is just a breadboard mounted on a metal plate with double sided sticky tape. The plate has binding posts for powering things but the posts are not connected to anything. You must connect wires from the binding posts to the breadboard. I hope this helps. Quite frankly, I hate...
  15. MP1

    Trace current limitations

    ...or just go to the original site (Ultracad) and download your own free copy of the trace width calculator. http://www.ultracad.com/calc.htm MP
  16. MP1

    Breath Alcohol Tester controlling car ignition

    Looks like it has "figaro" written on it to me...    ;D ;D MP
  17. MP1

    Simple 1 hertz clock

    You did not mention the duty cycle. MP
  18. MP1

    Some kind of RPM counter

    They are different types and either will work. In looking at your application, perhaps you will know if one setup is better than the other for your particular application. One uses a light beam with a chopper wheel to count pulses and the other uses magnetism and a reluctor to count pulses. I...
  19. MP1

    Led display Digital Voltmeter question

    Tokuoni, Yes, you can use a higher voltage rated capacitor. No problem. Dmitry, Yes, it does look like there is something missing in the schematic. I tried to point out to you that the other project shows a resistor connected between pins 30 and 31. Please refer to the board layout on this...
  20. MP1

    Led display Digital Voltmeter question

    Are you connected between pins 30 and 31? This is project #14. Also look at project #7 to see how it is done. I think you did not connect to the ground pin. The schematic is not very good, showing connections of the lines. You can also look at the board layout to verify. MP
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