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  • mortonkopf's Avatar
    Yesterday, 10:28 AM
    I can also highly recommend the SPI version, MCP23s17. especially as the set up of all eight chips on one CS line works very fast on polling loop, so no need to worry about dealing with interrupts and all the potential...
    18 replies | 309 view(s)
  • mortonkopf's Avatar
    03-24-2021, 07:41 PM
    @RIchard, will get it in the post in the next day or two. Board is populated with everything other than the rotary encoders. feel free to delete you address from above message, I have taken a copy. all the best
    16 replies | 7169 view(s)
  • mortonkopf's Avatar
    03-24-2021, 02:46 PM
    @RichardFerraro - i stuck with 100nf capacitors. the circuit is fundamentally the same as the PCBoard used here: https://forum.pjrc.com/threads/64850-16-rgb-rotary-SPI-port-expander-panel-testers I have one of those...
    16 replies | 7169 view(s)
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MCP23017 with teensy 4.1 at 1MHz? Yesterday 10:28 AM
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04-26-2013