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Type: Posts; User: Geomancer

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    Cool, sounds great. Thanks!

    Cool, sounds great.

    Thanks!
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    Teensy 3.6 Reset Pin

    Simple question. Is the reset pin an active low signal?

    Does it behave as a simple reset, meaning rebooting the processor the same as at power on?


    I have an external watchdog & power...
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    I ended up going with a pair of 64x32 RGB LED...

    I ended up going with a pair of 64x32 RGB LED panels. The price was right on Amazon at only $26 each. The Vishay panels would of been 3x the cost. The Vishay panels do have advantages though. One...
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    It's simply a process thing. Blind/buried vias...

    It's simply a process thing. Blind/buried vias are more complex to manufacture than a regular via.

    You want to minimize everything, not just ground connections. The positive end of a decoupling...
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    Thanks for the info. It shouldn't be too hard...

    Thanks for the info.

    It shouldn't be too hard to get a header soldered on. Since they're standard 0.1" spacing I can just use a strip of perf board to align the surface mount header in the center...
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    Teensy 3.6 Underside Pins

    I'd like to use the pins on the underside of the Teensy 3.6. These would be digital pins 40-57. The goal would be to have the Teensy be a duaghter board to a larger main board.

    It looks like I...
  7. Whoops, I worded my question wrong. I was...

    Whoops, I worded my question wrong.

    I was meaning instead is, would a uint8_t switchState[64] take up 64 bytes of RAM, or something more? I'm use to 8-bit micros rather than 32-bit.
  8. Paul would certainly know! The Teensy 3.6 is...

    Paul would certainly know!

    The Teensy 3.6 is only 144 pins (really balls on a BGA) so i could see it being done on "only" 6 layers.

    4 layers isn't *too* bad at OSHPark, but is double the price...
  9. Ideas for keeping track of the state of individual switches within a matrix?

    I will have an 8x8 switch matrix that's connected to a 16 port I/O expander that's communicated to via I2C. Each switch has a diode attached to it so that when multiple switch closures occur...
  10. If you're trying to go dense (aka, small board...

    If you're trying to go dense (aka, small board with everything crowded together) there is only so much you can do with just 2 layers (top and bottom). If a tiny size is a requirement, you may be...
  11. I had this problem too. I tried doing what you...

    I had this problem too. I tried doing what you describe, but instead just commented them out, but for some reason it was still happening.

    In the end, I removed the Wire.h file itself and replaced...
  12. I just got this setup today. It has mostly worked...

    I just got this setup today. It has mostly worked "out of the box" for me. Sorry, I know that's not all that helpful :(

    Maybe look in Tools->Visual Micro->Configure Arduino Ide Location(s) and...
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    Found the answer to my own question. It...

    Found the answer to my own question.

    It doesn't do a repeated start, but does appear smart enough to allow you to do another start condition after a read or write if you use the ISC_NOSTOP in the...
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    I2C Restart with i2c_t3?

    Simple question.

    Does the i2c_t3 library support I2C restart conditions? I have an I/O expander that you need to set the register address you want to start the read from (I2C Write), do a Restart,...
  15. Thanks! I think this will be a good starting...

    Thanks! I think this will be a good starting point. I actually happen to own an OLED using the SSD1306 controller so I was able to try that SparkFun library really easily. I put up the SPI bus on my...
  16. Graphics Library for generic Dot Matrix Display?

    Greetings!

    I'm curious if there are any graphics libraries out there for a generic dot matrix display. Basically, something that isn't specific to some controller chip. I'm working on a pinball...
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    Thanks for the tips! I'm more and more leaning...

    Thanks for the tips!

    I'm more and more leaning towards using a couple PICs or the FPGA.

    One PIC for the switch matrix, and the other for the display interface. Having one for the display...
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    Let's Talk Pinball

    I'm embarking down the road (I hope) of building a pinball machine. I'm planning on using a Teensy 3.6 as the heart of the project. I've never done something as complex as this before though and...
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    Moved it over to a breadboard I used throughout...

    Moved it over to a breadboard I used throughout college and know to be good. Worked liked a charm. Did some investigation of this new one I haven't used before and discovered the power rails don't...
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    Teensy 3.6 - I2S Audio on a Breadboard

    Simple question: Is trying to use I2S audio on a breadboard a lost cause?

    I just tried it out using an I2S chip I have from Digilent (they make FPGA and Pic32 dev boards) on a broadboard and was...
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