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  1. (*steve*)

    EMF Detector

    It could just be a leaky microwave oven.
  2. (*steve*)

    EMF Detector

    If it's for detecting interference with WiFi then all you need is a WiFi module that can report noise levels. There's a simple project using the nrf24l01 module that does just this.
  3. (*steve*)

    MAX7219 and 7-segment problems

    I read the magic words "got them cheap from China". Whilst not everything you get cheap from China is fake, if the deal is too good to be true...
  4. (*steve*)

    Anti surge on motorbike

    Good to hear that you've fixed it. After reading this thread I won't ask what you did because I really don't want to read any more of your posts
  5. (*steve*)

    Arduino PID Controller Help

    Very interesting. It also explains the cause of a whole stack of problems I had while using a PID controller.
  6. (*steve*)

    How to use switch statement

    That is insufficient. You have to tell us what you want. The example description of "program 1" includes several unknowns. If you're not prepared to describe the requirements from scratch (which you SHOULD be able to do) then at least full in the unknown values.
  7. (*steve*)

    Wireless Connectivity

    ESP8266
  8. (*steve*)

    Optoisolator Circuit

    One disadvantage of the MOSFET is it's high input impedance. Ok, that's a bit tongue in cheek, but the differences between components can be advantageous or detrimental. They are almost always a double edged sword.
  9. (*steve*)

    NP's of a Schematic

    And the line on the device isn't always white. Black lines are common on sides that aren't black. I remember it as the line on the device is the line on the symbol.
  10. (*steve*)

    interfacing the VB with arduino

    Are you planning to drink the VB? I assume you mean Victoria Bitter. I would not recommend putting it on the Arduino. In fact I wouldn't even recommend drinking it. I'm almost 100% certain your not talking about visual basic. So what do you mean by VB if it's not your beer of choice?
  11. (*steve*)

    db25 to usb

    SCSI is rarely used these days. But knowing what it actually is may help you Google for a solution
  12. (*steve*)

    How to use switch statement

    Vead, my solution lends itself to the second case above. To avoid confusion, let's go with lrv and find out what you want to do. If it happens to be the second case then I'll explain my code further.
  13. (*steve*)

    How to use switch statement

    Vead, does your C++ have a delay () function? Second thing. If you want the 3 LEDs to flash independently then you can't just flash them one at a time. Try something like this Int I=0; Int j=0; Int k=0; Void main() { While (true) { I++; If (I > 500/2) { Led1on; } Else {...
  14. (*steve*)

    How to use switch statement

    I doubt it's a class assignment. He's been going on at trying to program this thing for ages without bothering to learn the language he's using. If I recall correctly, vead began long ago with the question "is windows or Unix a better real time operating system" and has progressed to finding...
  15. (*steve*)

    50Mhz Square wave generation.

    A colleague of mine has built a soul moisture probe based on a capacitive sensor. The major problem is protecting your sensor from the environment. If you don't, your readings will drift over time.
  16. (*steve*)

    Automated Teller machine (ATM) controller board troubleshooting.

    The board probably has security measures. There may even be software that was held on these boards in volatile RAM that was cleared when the board was pulled. Watch this:
  17. (*steve*)

    How to use switch statement

    Google OK, I'm opening it again. You need to do some work for yourself. Please start by explaining how you think your code should work.
  18. (*steve*)

    Step down transformers

    10mA is certainly in the ballpark. But probably closer to 15mA
  19. (*steve*)

    Why are my LTSPICE results so different from the 1N4148 datasheet and real life?

    The slope of the curve is very steep. I would be happy that it's within cooee of the result you're getting. The value is also likely to be pretty temperature dependent too. (Within cooee is similar to within a bull's roar, but less than a packed lunch and a waterbag. Probably closer than...
  20. (*steve*)

    Low cost SMT links

    You can get plain cylindrical copper jumpers in reels (you can also get it with tin, and sometimes even silver plating). It's pretty amazing stuff because it allows you to select the length you require as you take it off the reel using a special tool. The trade name for these jumpers are "wire"
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