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  • mortonkopf's Avatar
    04-12-2021, 10:28 AM
    mortonkopf replied to a thread MCP23017 with teensy 4.1 at 1MHz? in Technical Support & Questions
    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...
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    18 replies | 317 view(s)
  • mortonkopf's Avatar
    03-24-2021, 07:41 PM
    mortonkopf replied to a thread SPI MCP23S17 and RGB Rotary Encorders in Project Guidance
    @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
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    16 replies | 7180 view(s)
  • mortonkopf's Avatar
    03-24-2021, 02:46 PM
    mortonkopf replied to a thread SPI MCP23S17 and RGB Rotary Encorders in Project Guidance
    @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...
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    16 replies | 7180 view(s)
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MCP23017 with teensy 4.1 at 1MHz? 04-12-2021 10:28 AM
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