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  1. Replies
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    17,049

    Re: Heart rate sensor MAX30102

    if you want automatic pulse measurement that remains to be seen, a pretty picture is a different story


    you can adjust filter as you see fit
  2. Re: How you directly access serially chained devices, like LEDS, shift registers, etc

    is your google broken

    "site: picbasic.co.uk/forum/ spi"

    "site: picbasic.co.uk/forum/ mssp"
  3. Re: How you directly access serially chained devices, like LEDS, shift registers, etc

    it would be difficult to pack rgb leds more tightly than these
    p3 64x64 p4 32x64 modules
    9174
    9175


    and they work, limited to 8 colours with pbp
  4. Re: How you directly access serially chained devices, like LEDS, shift registers, etc

    192x12x3=6912 bits == 864 bytes
  5. Re: How you directly access serially chained devices, like LEDS, shift registers, etc

    apa102 16million colours, 32 level global power control
    HT16K33 8 colours no power control

    dmd panels come in p2.5 p3 etc to p10 the number is the pixel grid spacing in mm
    dmd panels are just...
  6. Re: How you directly access serially chained devices, like LEDS, shift registers, etc

    18F46K40 can run at least 4 of these 16x32 [512led] modules, possibly 6
    @25 fps(as a back ground task)
    https://youtu.be/ADqMRU4rcBg

    two colour

    https://youtu.be/znE3BSGpKZ8

    full 24bit...
  7. Replies
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    17,049

    Re: Heart rate sensor MAX30102

    been there done that.




    there is plenty of raw data posted, you can always ask for more. feel free to have a go
  8. Replies
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    17,049

    Re: Heart rate sensor MAX30102

    looks like simplistic lowpass filtering of the data to obtain pulse will never give a
    reliable and repeatable result, it can deliver a nice picture but that is as far as it goes.
    i will need to...
  9. Replies
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    2,636

    Re: max7219 4x 8x8 panels spi

    thats glcd mode you need tft mode
  10. Re: Another attempt for I2C eeprom, this time - 25C256.

    don't think you looked too hard

    9172
  11. Replies
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    2,636

    Re: max7219 4x 8x8 panels spi

    http://www.picbasic.co.uk/forum/showthread.php?t=24452&p=147955#post147955

    9162
  12. Re: Another attempt for I2C eeprom, this time - 25C256.

    make an icon and assign admin to it , not a problem. running in compatibility mode can help if it wont save stuff w10 is ok without it



    glcd mode is data by column, tft mode is data by row ,...
  13. Replies
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    Re: Heart rate sensor MAX30102

    tidied up a bit and swaped to using ir data [still in mode 3 for now]



    '****************************************************************'* Name : MAX30102 FOR PIC 18 DEMO ...
  14. Replies
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    Re: max7219 4x 8x8 panels spi

    0xE=0b00001110, 0x10=0b00010000


    and all these makes 80E

    7 high bits | 7 low bits
    0x10<<7 | 0x0e &0x7f = 0x80e
    0b000100000000000 | ...
  15. Replies
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    2,636

    Re: max7219 4x 8x8 panels spi

    uses half the amount of flash memory when using 7bit numbers [pic16 flash is 14 bits wide] so you need to pack it.
    it takes very little time for the pic to unpack so there is no real penalty for a...
  16. Replies
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    17,049

    Re: Heart rate sensor MAX30102

    if you are using excel then its easier to import dec rather than hex, i changed to dec
  17. Replies
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    2,636

    Re: max7219 4x 8x8 panels spi

    Since I have on hand only 16F1827, I modified the code for the PortC pins but as expected does not work. Modifications in red.

    default sdo for that chip is rb2, for mxdi var porta.6 ​you...
  18. Replies
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    Re: Heart rate sensor MAX30102

    this kind of defines the problem

    9155

    peaks are easy to see, my 32 sample search yields these peaks its not easy
    sample
    5
    51
    95
    98
  19. Replies
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    Re: Heart rate sensor MAX30102

    i cleaned the screen with metho it had a spec of gunge in the wrong spot now restored. mine will not run for long at 5v 3-4 minutes then the readings are crap, jumper made nil difference. i notice...
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    Re: Heart rate sensor MAX30102

    interesting mine has no jumper fitted, its not dead just gives random results , temp works ok still
    led still comes on
    i will solder the jumper and try again
  21. Replies
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    Re: Heart rate sensor MAX30102

    my module was clearly marked as 3.3v its the one with slots in the board to tie it on your finger
    the code has little if any effect on the graphical result. the result depends on your finger and...
  22. Re: Another attempt for I2C eeprom, this time - 25C256.

    Address var byte
    Address = 160
  23. Re: Another attempt for I2C eeprom, this time - 25C256.

    it a constant , pbp constants are 16 bits , i2c address are 8 bit
    use your logic analyzer
  24. Replies
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    17,049

    Re: Heart rate sensor MAX30102

    well my sensor was not 5v tolerant its now a random number generator , in the bin
    i give up
  25. Replies
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    Re: Heart rate sensor MAX30102

    the filter is not really the issue, its the variability of the data that is problematical, every 128 sample is subtly different.
    light leakage, finger pressure and position and even finger...
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