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Recent content by wade_hassler

  1. W

    how i can measure frequency this oscillator with oscilloscope 80 Mhz?

    You could divide the frequency by, say, a factor of 5 and measure that.
  2. W

    3phase power question

    Re: wiring 3 phase using a nueral line Your mention of 230V power tells me you're not in the US, but if you were, the neutral would nevernevernever be interrupted
  3. W

    connect an i/o line from one Arduino to the i/o line of another Arduino

    You might also, just for luck, put a resistor between the two I//O lines in case they are both programmed as outputs during development
  4. W

    [moved] 3.7v 500mAh LiPo battery to AC adapter

    Your copter will need more current to get aloft: amps, not milliamps. The standard battery is 500 mAh. Here's an interesting write-up on flight times vs battery capacity. Speculating here: Maybe an open-frame 5VDC supply could be turned down to 4.2 volts?
  5. W

    Is this bourns pot linear type ??

    Not all carbon pots are linear, but most called 'trimpots' are.
  6. W

    [Moved]: TDA8571J 4x40W audio amplifier

    All components external to the IC are already specified.
  7. W

    project :Gray Counter

    That's the way I remember it, too: that some of the outputs had fewer product-term inputs than others. But I can't find a data-sheet on line that shows that: they all have seven inputs, which should be enough. Maybe the tool in use can be targeted to a slightly-different PAL/GAL.
  8. W

    Contact less Current sensing for 100kHZ frequency

    Don't know what you're doing with the signal, but this might help.
  9. W

    [Moved] How to write RS-485 code for freescale K20 microcontroller

    Insufficient information. What is your application? Are you aware that RS-485 is a hardware thing?
  10. W

    Is there a single IC that generates 5V, 3.3V and 1.8V power rails after conversion

    Here's all of Digikey's multi-output LDO's: no luck here. And, you can get switcher/LDO devices, too. Do your own search.
  11. W

    [General] Embedded Assembly language versus Embedded c language

    A book about ARM will have to cover topics specific to ARM, and there is nothing ARM-specific in C. You don't need to learn assembly-language to program a microcontroller , but it will help in the long run. By that, I mean that you will eventually need to make something run faster or require...
  12. W

    Amplifier problem (low pass signal)

    Attatchment schematic of problem-circuit is inaccessible
  13. W

    Low cost low frequency oscillator

    How about a single-gate Schmitt-trigger oscillator? Digikey has 74AHCT1G14SE-7DITR-ND at $0.0425/3000
  14. W

    [ARM] Error[Pe159]: declaration is incompatible with previous ........

    It may be because you did not give the compiler a prototype of "ReadTemperature()", forcing it to use an assumed type. There are prototypes for almost everything else, so give that a try.

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