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  1. (*steve*)

    Increase In Output Pulse As Supply Increases In 555 Timer, Why?

    Place a small capacitor across the motor and another one across the pins of the 555. I suspect that noise from the motor is affecting the detection of the upper and/or lower thresholds. Changing the battery voltage may also change the impedance of your supply leading to more or less effect...
  2. (*steve*)

    Increase In Output Pulse As Supply Increases In 555 Timer, Why?

    What sort of capacitors are you using? Some can vary in capacitance with voltage.
  3. (*steve*)

    Repairing a sony minidisc deck mds-s38

    Hmmm, it doesn't seem to want to give it to me.
  4. (*steve*)

    Processor 80286 _ Application errors_urgently help needed!

    If it's possible that the serial port has failed, or that something of is happening on the bus, or even that there are problems with the power supply, or even that the program or operating system have become corrupted. It's really hard to say.
  5. (*steve*)

    AC Energy Logger Project

    Well, once you're able to drive all the bits by themselves, you are going to need to figure out how to use them in combination to measure power. You have one microcontroller which has to read, calculate, display, and (presumably) store the results. How often do you need to take readings (of...
  6. (*steve*)

    AC Energy Logger Project

    I'd use Google. Try searching for "Arduino acs712", etc
  7. (*steve*)

    Repairing a sony minidisc deck mds-s38

    Post the information you have, and let's see! (we've all been waiting :-))
  8. (*steve*)

    AC Energy Logger Project

    Have you written simple programs to control each of the sensors an the display separately?
  9. (*steve*)

    Processor 80286 _ Application errors_urgently help needed!

    Perhaps the mode executable is from a different version of DOS than the one you're running it on?
  10. (*steve*)

    Drive A 5w Led

    That's not a heatsink, that's what you mount on a heatsink. Not really, more an observation based on plenty of experience.
  11. (*steve*)

    AC Energy Logger Project

    Will you be using a microcontroller? Have you decided which one? Are you allowing for power in both directions, or just one?
  12. (*steve*)

    Satistronics shop - Legit or scam?

    Good, but maybe expensive, option. I can't imagine the Argentinian post can be any slower than China post :-) I don't know, but I have been to Shenzhen, and I know that holding stock is an expense. I went to a building that had one floor dedicated to people selling USB sticks. If it's not...
  13. (*steve*)

    PWM Control with Shift Register Support for 3w White LED's

    By the way, those LEDs you show are not on heatsinks. The little board they're on is what you attach to a heatsink. You can purchase the chips used to control strings of LEDs and white each one to something which can drive the higher current required by these LEDs at full power. If you use...
  14. (*steve*)

    Satistronics shop - Legit or scam?

    Looks like yet another Chinese site selling stuff from Shenzhen. It's possible that after you place your order they run off down to try to buy the parts as cheaply as possible. It's also possible they hold some stock, who knows? You'll probably get your order in a month or so. How's the...
  15. (*steve*)

    Trouble getting enough power to LED strip

    Each package can draw up to 60mA, 20mA for each of red, green, and blue. A string of 9 of them can draw up to 540mA. But what I was referring to was the amount of current the Arduino can supply from it's 5V output. It's likely to be far less than 540mA
  16. (*steve*)

    Fidget Spinner Generator :)

    I look forward to buying one of your perpetual motion fidget spinners.
  17. (*steve*)

    Choose the right Mosfet

    Look for a MOSFET described as "logic level" You probably should be looking for something which is rated for a continuous Ids of 4A or more.
  18. (*steve*)

    Is this dc adapter safe to plug into my keyboard instrument

    The 9V adapter may be ok. What's does it say near the power socket? Make very sure the polarity is correct.
  19. (*steve*)

    1/4 hp lathe motor only runs slowly and won't reverse switch since I overloaded it.

    Did you witness it reverse and/or run at full speed before this incident?
  20. (*steve*)

    Trouble getting enough power to LED strip

    Check the specs of your Arduino carefully. Your USB port is possibly limited to 500mA, the regulator on the Arduino can almost certainly supply LESS. Remember that both also have to power stuff other than your LED strip. What current is rewired by your LED strip? Can you point us to a...
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