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  • mxxx's Avatar
    04-28-2019, 11:26 AM
    they won't be crazy; the input will go up to 1/2 VREF and sit there (also see here); so yes, there might be ways of dealing with this in software, though doing it in hardware seems to me the better/easier approach. it's...
    13 replies | 264 view(s)
  • mxxx's Avatar
    04-28-2019, 08:29 AM
    sorry for being unclear: i didn't say put 100k after all the CVs, i said keep in mind the ADS8688 inputs behave weird when floating (which they will, under certain circumstances, in your schematic as is). that might...
    13 replies | 264 view(s)
  • mxxx's Avatar
    04-28-2019, 07:11 AM
    i also have difficulties figuring out what's going on, but fwiw ... keep in mind that the ADS8688 inputs can't float* (because of the way the integrated front end works). that would happen though, if i see it right,...
    13 replies | 264 view(s)
  • mxxx's Avatar
    04-26-2019, 09:57 AM
    received the 1062-beta board -- thanks! no boot-up issues when using external power! (see #1995) quick question about "Drive Strength": i've been playing around a bit with a SPI DAC breakout-board this morning...
    2895 replies | 338172 view(s)
  • mxxx's Avatar
    04-17-2019, 06:11 PM
    fwiw / re post #4, the OSC (https://github.com/CNMAT/OSC) and MIDI libraries both work ok. (NB: i didn't extensively test all the various options (like midi clock), and didn't test USB (yet), but sending/receiving...
    2895 replies | 338172 view(s)
  • mxxx's Avatar
    04-03-2019, 06:12 PM
    it's not very dramatic. i mainly wanted to see how fast things can go. fwiw, i've tested with a board which has a 8 channel ADC and 8 channel DAC on the same SPI bus, both devices have 32 bit wide registers, so that's...
    2895 replies | 338172 view(s)
  • mxxx's Avatar
    04-03-2019, 09:23 AM
    question about "FRAMESZ": would it make sense to maybe integrate this with, say, SPISettings? further upthread KurtE mentioned something along these lines ("a) Update Transfer16 should be simple... Just need to...
    2895 replies | 338172 view(s)
  • mxxx's Avatar
    03-31-2019, 03:43 PM
    many thanks! (also @mjs513) (oh, and ... with an eye on the 1062, will the pads for the usb signals still be centred / aligned with the VIN/GND pins?)
    2895 replies | 338172 view(s)
  • mxxx's Avatar
    03-30-2019, 05:08 PM
    slightly OT, my apologies -- does anyone (or Paul) have the part-number for the pogo pins used on the beta breakout-board? i can't seem to find the right height on mouser ... thanks!
    2895 replies | 338172 view(s)
  • mxxx's Avatar
    03-25-2019, 12:13 PM
    fwiw, not 100% whether that's what you're seeing, but i remember i had weird noise issues when directly interfacing the T3.x ADCs with an op amp. a small series resistor (51R or so) fixes/d it.
    5 replies | 183 view(s)
  • mxxx's Avatar
    03-22-2019, 10:37 PM
    ... just remembered this again. possible that the pinout on p.1 (and above code) is wrong on UART2 / CTS? on p. 472 of the IMXRT1050RM datasheet it says CTS = AD_B1_00, which would be pin 19, right? (whereas...
    2895 replies | 338172 view(s)
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External cv inputs and attenuverters board 04-28-2019 11:26 AM
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