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Type: Posts; User: nshaver

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    Ah, thanks very much for that tip! I'm seeing...

    Ah, thanks very much for that tip! I'm seeing quite a bit of hits now that I google for "multiplexer opamp". I'll make use of an opamp on my next multi-pot 4067 project. Did you use a 4072/4 op amp,...
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    For what it's worth, I have used CD74HC4067...

    For what it's worth, I have used CD74HC4067 multiplexers to read lots of pots into a Teensy 4.1 for MIDI controller projects. That has worked ok, but my pot values seem to be jumpy sometimes. I've...
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    For what it's worth, I've always used millis() or...

    For what it's worth, I've always used millis() or micros() for timing-related tasks. The very first thing I do in my loop() is grab the millis into an unsigned long variable. If I'm ever wondering...
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    For what it's worth I have updated the code in...

    For what it's worth I have updated the code in github for my "no interrupts" version. Link is in first post to this thread.
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    I did some testing to see if I'm missing...

    I did some testing to see if I'm missing important button presses with the non-interrupt method. Best I can tell, it's fine. I'm going to polling, interrupts are more trouble than they're worth in my...
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    Well, for what it's worth I gave the...

    Well, for what it's worth I gave the non-interrupt method a try again and polled every 5ms. I'm also keeping up with the LED state of any LEDS that I've turned on or off, so that I never try to turn...
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    Have you done any testing to see how many...

    Have you done any testing to see how many loop/sec you're able to process? I worry that if I poll too much my Teensy won't also be able to handle the wave generation and effects. I plan on using...
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    I have some loop-counting logic in my examples....

    I have some loop-counting logic in my examples. When polling every loop the "loops per second" numbers were in the hundreds or low thousands. When using the interrupt it runs at around 8 million...
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    Teensy 4.1 + MCP23017 examples

    I'm building a teensy 4.1-based drum machine. It's got quite a few buttons and LEDs so I'm using a few i2c MCP23017 to offload the I/O. It took me WAAAAY too long to get the Teensy 4.1 working with...
  10. I have tried your sample waves in my teensy synth...

    I have tried your sample waves in my teensy synth that I'm building. They're working great! Thanks very much for the work on those. They're much better than the aliasing stock saw and square waves.
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    I created a simple drum synth on a Teensy 4.0...

    I created a simple drum synth on a Teensy 4.0 today. It has DIN MIDI in via a simple MIDI breakout board, and it uses simpledrum for a few sounds, and it plays wav files that I converted via...
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