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  • djex81's Avatar
    02-07-2021, 10:29 PM
    Hello All. I have a quick question. I'm designing a MIDI controller that will have several mechanical rotary encoders. For mechanical encoders it's recommended to use a simple filter and pull-up resistor on the outputs...
    2 replies | 162 view(s)
  • djex81's Avatar
    01-13-2021, 05:13 PM
    Thank you Paul for the detailed reply it was very helpful. Your right now that I think about it a bit more the Teensy is not slow at all. I'm use to working with slower chips and optimizing code to run the fastest...
    14 replies | 518 view(s)
  • djex81's Avatar
    01-12-2021, 09:49 PM
    I believe the LATCH pin in the code is labeled as LOAD on the schematic. They are using a regular Digital pin for the LATCH / LOAD. Also I've taken a look at your schematics, will your method work with multiple button...
    14 replies | 518 view(s)
  • djex81's Avatar
    01-12-2021, 09:12 PM
    Interesting. So shiftin() seems like the way to go for performance. I was concerned polling 57 inputs (64 using 8 x 75HC165) would take too long and possibly miss button presses? So basically I would be shifting out 64...
    14 replies | 518 view(s)
  • djex81's Avatar
    01-12-2021, 08:35 PM
    I need to detect around 57 button inputs. So I will have 8 x 74HC165. I'm looking for a way to poll the inputs quickly and I figured if I could do it using SPI that I could avoid slow downs. I am now looking at possibly...
    14 replies | 518 view(s)
  • djex81's Avatar
    01-12-2021, 07:49 PM
    Hello, I'm looking to use SPI for my 74HC165 chips to detect button presses using the schematic and code found here: http://www.gammon.com.au/forum/?id=11979 The schematic on that site only uses MISO and SCK SPI...
    14 replies | 518 view(s)
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