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  1. D

    Spectrum analyser Equalizer project how to go about it?

    To do whole design you need 15 + 31 pins + say 5 pins for misc. That board does not have enough pins. The alternative board is CY8CKIT-050 which is a lot pricer, or get a chip and do a layout.... Regards, Dana.
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    Spectrum analyser Equalizer project how to go about it?

    Driving an array of LEDs : The NPNs for column drive can handle all the segment current, which a typical processor cant. Here PNPs were also used in case one wants LED current >=~ 20 mA in the LED. And you see the current limiting R in series with the LED to insure it does not get burned out...
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    Spectrum analyser Equalizer project how to go about it?

    Filter just 2 channels. FFT you would have to look at manual/pinout to see how many pins left after implementing 31 segment pins and A/D input pin and DAC output pin.
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    Spectrum analyser Equalizer project how to go about it?

    A driver has to be done in Verilog to handle the array. This works, but better way would be to do it in verilog. Below uses onchip resources, as would Verilog solution You would need NPN transistor for each column to handle the 31 LED amount of potential current into it. Note PSOC is limited...
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    Spectrum analyser Equalizer project how to go about it?

    Thats if you use filter approach. The FFT approach one chip. One issue is that low cost board does not have enough I/O on it to do the array, you would need a board with more I/O. But for proto purposes the 059 board will do to implement fewer columns for test. Regards, Dana.
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    Spectrum analyser Equalizer project how to go about it?

    So 15 frequencies (channels) with a amplitude 0 - 30. Is display a ready made part or one you will make out of discrete leds ? If former link to data sheet.
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    Spectrum analyser Equalizer project how to go about it?

    Channels in your design is the frequency colum, 1 Khz column is a channel.....
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    Spectrum analyser Equalizer project how to go about it?

    Lets restart with a couple of questions : You have a 15 x 32 matrix you want to display. You are thinking LED. Here is an approach that has the driver and led for each element in one package, and each element addressable. You buy them in strips the # elements you need...
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    Spectrum analyser Equalizer project how to go about it?

    PSOC Creator So its clear each board will only support 2 channels if you go the filter approach. So you take the example project that does 1/2 the DFB block to create 1 channel, and essentially dupe the code base to do the other channel in the DFB. If you do the FFT approach one board would...
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    Electrical circuit Analysis

    No, the transient source, V2, is not constantly at 5V Regards, Dana.
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    Spectrum analyser Equalizer project how to go about it?

    Each board will / should support two channels, two frequencies. So its your call where to place the filter frequency points that you want. As you suggest an even spacing over the range you want to do..... Not sure about you bandwidth question, what you are referring to ? If bandwidth of filter...
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    Spectrum analyser Equalizer project how to go about it?

    I would start with example project : 1) Set device to correct target part number 2) Config 1 chan of filter 3) Input a 1V sine, and vary it over freq range while observing DAC pin output, to verify filter working. 4) Modify filter to add use of SAR, eg. replace delsig ...
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    Spectrum analyser Equalizer project how to go about it?

    One of the things you can do is use the internal Wavedac, gen a sine, and using the DDS sweep it to monitor digital filter output to make sure you have your code right when you code the routine to look at the filter output and capture its max smaple value to test for amplitude. Note the DDS is...
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    Spectrum analyser Equalizer project how to go about it?

    Not knowing your experience level one thing I advise for folks getting started in the game is for I/O pins putting a series R with connections to the pin, 2 - 5K. In case they have other higher V's in design and accidentally short one of those pins to the higher V, destroying the part. The R...
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    Spectrum analyser Equalizer project how to go about it?

    Note thats not as narrow as it can be, I just happened to set it for 10%. Also keep in mind solution I picked is biquad, which is not linear phase. If one wants linear phase (which is not needed for this design) then approach would be more like FIR. Regards, Dana.
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    Spectrum analyser Equalizer project how to go about it?

    Yes.
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    Spectrum analyser Equalizer project how to go about it?

    Focus on the 5LP board first. The target chip on that board is CY8C5888LTI-LP097, but once you get your project up and running there is a device selector in tool to optimize what you need. The project for dig filter in IDE is DelSig based. A SAR version project can be found here ...
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    Spectrum analyser Equalizer project how to go about it?

    1) PSoC 3, 4 and 5lp code examples 2) For datasheet, architecture TRM, application notes, footprints and design files you can go to the device-specific page on the Infineon website: Infineon Microcontrollers, and find these under the details and design support section 3) On the product page...
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    Spectrum analyser Equalizer project how to go about it?

    PSOC 5LP, here is whats on chip, multiple copies in many cases : Originator was Cypress then bought out by Infineon. IDE - https://www.infineon.com/cms/en/design-support/tools/sdk/psoc-software/psoc-creator/ Board - https://www.infineon.com/cms/en/product/evaluation-boards/cy8ckit-059/...
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    Spectrum analyser Equalizer project how to go about it?

    IOW ? What I showed is one chip, the opamps are onchip, only one used as Vref buffer, as is the shift reg for led drive and the filer. Regards, Dana.
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