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  1. (*steve*)

    Strange symbols in Cct. Diags.

    The other one you don't see too much is μμF. I also remember when a locally published electronics magazine decided to start using nF instead of things like 22000pF and. 0.0068uF. At the time I thought that replacing them with 22nF and 6.8nF seemed needless and confusing! It also generated a...
  2. (*steve*)

    GENIE PIC Microcontroller Flowchart Help

    Think about a state-transition model. It's relatively trivial to run multiple in parallel leading to very efficient multitasking.
  3. (*steve*)

    Strange symbols in Cct. Diags.

    I've seen the old style mfd in both lowercase and uppercase. Using mfd, like cps or c/s instead of Hz is more old fashioned than confusing for us old timers. However mF sometimes actually means milli-Farads.
  4. (*steve*)

    Need device convert hdmi to composite signal

    Only if you like clicks and pops.
  5. (*steve*)

    Battery supplied electric Jacket

    Well, that was the reason I asked if the battery got hot. I interpret what you said to mean that if the battery is connected to the gillet, the battery went flat very quickly with no apparent heating of the gillet. This points to a short, but that would typically cause the battery to get warm...
  6. (*steve*)

    Need device convert hdmi to composite signal

    Are you buying? I have 4 out of 6. I see no reason to replace them, but I'll take advantage of your offer. Will you install them too? (Not so important for me, but I'm sure others would like to take advantage of your generous offer).
  7. (*steve*)

    Help with replacing component on circuit board

    If you're coming here from the polkaudio forum with a different question about this subwoofer, please don't post in this thread. If your subwoofer is "coughing", then this might be the thread for you.
  8. (*steve*)

    Battery supplied electric Jacket

    If you touch the two probes together on the 2k range, what does the meter read? If we take the meter readings as accurate, it suggests the gillet generates 6 times as much heat as the jacket. Is this at all reasonable?
  9. (*steve*)

    Battery supplied electric Jacket

    Does the battery get hot?
  10. (*steve*)

    Program to print a string

    When you pass a string to printf, you pass the address of the first character of the string. From the address of the first character, can printf know the length of your defined array? How does it know where the string ends? In your example above, why do you think there array has space...
  11. (*steve*)

    Servo motors, using photoresister

    Yes, the service is called google. See also YouTube and this forum. However you'll have to start (if you sell help here) by providing links to the web page(s) you got your design from, and probably pictures of your construction.
  12. (*steve*)

    Identifying a chip

    Yeah. It's not obvious that this chip is an input or an output. Was there a power supply fault?
  13. (*steve*)

    Identifying a chip

    My guess is that it's a standard but of glue logic. I'd be looking for a 20 pin chip with parallel inputs or outputs on pins 12 thru 19. It might help if we can see the other side of the board. Edit: it might also be something like a 74HC373 that has interspersed inputs and outputs on these...
  14. (*steve*)

    Program to print a string

    Also consider what printf knows about your variable containing a string. How can it tell when it gets to the end of the string?
  15. (*steve*)

    Martin MX-4 scanner issue

    Presumably you've traced the shutter control back to a pin on the microcontroller. There is a small, but finite probability that this lead of the microcontroller either wasn't soldered, or the solder joint had fractured.
  16. (*steve*)

    What should I get for beginning electronics?

    The first lesson is that every rule you learn is a simplification of some deeper or more complex explanation. The second lesson is that the simple version almost always works well enough. The third lesson is recognising those instances where it isn't. You will repeat these three lessons over...
  17. (*steve*)

    How do you verify your ohmeter works?

    That's 1.2kΩ, or 1200Ω
  18. (*steve*)

    DIY voltage Regulator

    The op has an input voltage of 48V. He doesn't need anything remotely close to a low dropout regulator.
  19. (*steve*)

    LEDs powered from AAA battery

    Scroll through to the first image (I think it's called "image 0.1"). That shows you what a typical LED looks like, and the schematic symbol for them. Then scroll down to section 1. The first image in that section shows a simple circuit diagram for wiring a LED. Ignore the text to the right at...
  20. (*steve*)

    How do you verify your ohmeter works?

    The problem is that the phone hasn't figured on what you're trying to show. More light helps, as does a critical look at the photo before you post it.
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