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  1. (*steve*)

    Help copying program from C167CR Chip

    The difference should be noted in the device markings. If it is mask programmed then, In theory, you can dissolve the epoxy and read the program with a microscope. In practice, it's probably cheaper to buy a new whatever it is.
  2. (*steve*)

    Wireless power transfer

    My toothbrush does.
  3. (*steve*)

    Help copying program from C167CR Chip

    Generally speaking, this is often (intentionally) not possible.
  4. (*steve*)

    Current sensing circuit help

    readjust the trimmer so the output is about 10mV without a load attached. Now see if you have more sensitivity. You may have set the zero actually below zero (and with this circuit, the output can no longer go below zero) which will decrease it's sensitivity. Increase the 100k feedback...
  5. (*steve*)

    RF Transmitter/Receiver Without Arduino?

    The small transmitter and receiver modules that you see are often far more than just transmitters and receivers -- especially those that operate in the 2.4GHz spectrum. Most plain transmitters and receivers you'll find are in the 433 MHz band (like this). Most of these are simple CW...
  6. (*steve*)

    New to electronics. Toaster Oven disassembly question

    I've done something similar to add more heating elements (from a toaster) to a toaster oven to make a reflow oven. This isn't electronics :-). It's mechanical hackery convinced with mains wiring. Be very careful that you don't short anything out, and ensure that metal surfaces are grounded...
  7. (*steve*)

    Current sensing circuit help

    If you find that the output is moving closer to zero but you run out of adjustment before it hits zero, you may have to adjust the resistors to get a larger voltage setting from the trimpot (the easiest way is to parallel a high value resistor with the resistor at the end of the trimpot where...
  8. (*steve*)

    Calculating gyroscope turn regardless of angle

    Because cos θ falls to zero at 90 degrees. As you get closer and closer to zero it will be harder to correct for the angle. If you're only going to have relatively small angles that won't be a problem.
  9. (*steve*)

    Current sensing circuit help

    Are you comparing the output with the potential at the junction of the zener diodes? (Because that's where you should be measuring it).
  10. (*steve*)

    Calculating gyroscope turn regardless of angle

    My faith in mathematics has been restored! That formula will work as long as the angle doesn't get too large, and there are not simultaneous rotations in another axis.
  11. (*steve*)

    Calculating gyroscope turn regardless of angle

    I have already answered this. Without delving into the mathematics, I would have assumed you would see 141, not 100. And as I also mentioned, because the result is not what I expect, I'm not going to waste your time. You really have to go back to the maths (that you said you didn't want to)...
  12. (*steve*)

    Calculating gyroscope turn regardless of angle

    You have asserted that if the axis is rotated to 45 degrees, the output is reduced to half. I am in no position to dispute your assertion. I have stated that this is not what I would expect. Why would you ask me how much it reduces by if you have already told me?
  13. (*steve*)

    Calculating gyroscope turn regardless of angle

    You're telling the story.
  14. (*steve*)

    Voltages - continuation of the discussion

    It works for an idealised problem where the voltage source can supply the infinite current for zero time to capacitors with zero leakage and series resistance. In short, it will work in the theoretical case which is what these problems represent.
  15. (*steve*)

    POWER QUALITY ANALYZERS and use with different brand current probes

    Probably not. AC and DC current probes typically use a different type of sensor and equipment desired for one will not work with the other.
  16. (*steve*)

    Solar Drone

    Apparently not. This one even carried a human (ok, so it's an aircraft, not a drone, but I would think that adds weight (ha ha) to the argument).
  17. (*steve*)

    Voltages

    There is no need for a little resistance or a lot of time... All you need to understand is what DC voltage appears at the point between two arbitrary capacitors (initially at 0V) when a DC voltage exists at the ends. They form a voltage divider producing the same voltage as a pair of resistors...
  18. (*steve*)

    Calculating gyroscope turn regardless of angle

    You have asked them distinct questions. The first was for a rotation in space with a Tillie's axis. The second is to calculate the speed of rotation. The former is the question I tried to answer -- pointing you to the mathematics you need to understand. Bring that, I'm speculating because I...
  19. (*steve*)

    Calculating gyroscope turn regardless of angle

    Cos 45 and sin 45. These functions work on angles! I'm not saying that is the correct formula, you need to look up how to do those transformations yourself. The web site I have you send to have code examples.
  20. (*steve*)

    Calculating gyroscope turn regardless of angle

    The later, a cos on its own wouldn't do you to much good.
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