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  1. M

    Teensy - running FFT and export "result" to a PC?

    Allright - then i will plan to make he 512 array, and then send it through serial, and capture with coolterm and then run it through matlab - thanks :)
  2. M

    Teensy - running FFT and export "result" to a PC?

    Hi, im planning to do a sound project where i will be using some filters and some others functions to analyze a sound source, but for now i want to start up by running a FFT to see what kind of frequencys i have in the background, and what kind of filters i will be needing. So my plan is to...
  3. M

    High speed dual ADC - detect edges?

    so let get this straight - the timer's / channels is default configured for input capture - you say i should avoid interrupts, so I have 4 microphones that i have passed through 4 comparator so they will emit a 3.3v pulse when sound is detected. Now i will need to measure the diffrence -...
  4. M

    High speed dual ADC - detect edges?

    All right - sounds like a good way to work with it - will look into it the first thing in the morning - Thanks :D
  5. M

    High speed dual ADC - detect edges?

    How will i "read" the value? just by digitalRead and count microns between the toggle or is there a fancy PWM function since you recomend the FTM0 pins? :)
  6. M

    High speed dual ADC - detect edges?

    Any exampels on DMA? have never seen or heard about it, but sounds like a solution if i can get it to work. so let me get this straight: 1: take the microphones and couple up to some schmitt trigger to convert the signal to 5v when it is over a threshold - then use the FTM0 pins to measure the...
  7. M

    High speed dual ADC - detect edges?

    Real time processing is not a problem - want it to run a trigger (a threshold) and if the soundlevel passes the threshold, it will sample for a short periode of time and then it will pause the sampling and calculate the stuff i need
  8. M

    High speed dual ADC - detect edges?

    it is precisely what i want to measure - my distance is 0.5m between the microphones - Do you have any introduction to DMA? have no idea what it is?
  9. M

    High speed dual ADC - detect edges?

    Yeah, but Im not sure if it will sample fast enough for me - i need to sample enough to read values at a good bit faster than 1.47058824 milliseconds - the faster the better - my project is all about the delay in sound between the 4 microphones
  10. M

    High speed dual ADC - detect edges?

    Well, its 4* electret microphone - i have built a circuit that gives me up to 3.3v from the microphones, and i have tested that they work on the oscilloscope, can post pictures soon. A Very simple picture of how it should work the output i want from the microphones i some kind of array with...
  11. M

    High speed dual ADC - detect edges?

    Hi, im trying to do a project where i will be needing a very high sampling rate. I want to use some microphones to detect loud short noises (like claps) - but i have 4 microphones(testing with 2) i want to sample with. I know the Tennsy 3.2 have 2 ADC's and im trying to understand and use...
  12. M

    Powering Teensy 3.2 from external power and still have usb in with power cable in it?

    yeah i want to have the option run it in 3 modes: 1 be able to code on it by usb only, 2: run power supply only 3: Usb and Power supply at the same time - so diodes it is right?
  13. M

    Powering Teensy 3.2 from external power and still have usb in with power cable in it?

    Hi, im building my first big project with the teensy 3.2, and i would like to have the ability to power the teensy both by USB or external power (from at power supply) - i would love to be able to have both the power supply plugged in at the same time as the usb cable, and without cutting the...
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