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  1. I believe I've located the issue, you have...

    I believe I've located the issue, you have multiple libraries using the same pins so they are interfering with each other.



    //From config.h
    #define ENC_L_PIN_A 3
    #define ENC_L_PIN_B 2...
  2. This problem has come up before when people use...

    This problem has come up before when people use that same library to control their multiplexer:...
  3. Thread: piezo cable

    by vjmuzik
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    Would a non-inverting op amp circuit not be...

    Would a non-inverting op amp circuit not be suitable for something like this? I’ve never used piezos before, but if all you need to do is adjust the voltage that seems like the simplest way to do it.
  4. Without seeing the code youíre using my best...

    Without seeing the code youíre using my best guess is you donít have any delay added after switching your address pins of the multiplexer. Without a very small delay what can happen is you will read...
  5. Thread: Arduino 1.8.11

    by vjmuzik
    Replies
    10
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    265

    If it's my USBHost ethernet you are referring to,...

    If it's my USBHost ethernet you are referring to, it's currently in a working state the last time I checked however I wouldn't really consider it too mature since it's not really user friendly right...
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    That specific chipset doesn't support USB for...

    That specific chipset doesn't support USB for operation as it's only for manufacturing tests, the most common mode of transport for Wi-Fi chips is SDIO which I believe is the mode that FNET supports...
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    The hardest part is finding a dongle that has a...

    The hardest part is finding a dongle that has a reference manual for the usb spec since without it it will be extremely difficult to try and figure out all the commands and what they actually do by...
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    I believe the support was for an SDIO wifi chip...

    I believe the support was for an SDIO wifi chip that some dev kits include, but the Ethernet stack is universal so it could work with a USB wifi dongle as long as it has a driver that can do the...
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    That's basically what I followed just not the...

    That's basically what I followed just not the stereo version, I didn't have the same capacitor values so I used 100uf instead since that's what I have handy for DC blocking because my mixer uses them...
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    I didn’t have to do too much just change this...

    I didn’t have to do too much just change this AudioInputUSB to this AudioInputAnalog and add the recommended external hardware. I don’t have one of the PJRC audio boards so I just used the built in...
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    Correct, but the memory slots aren’t just...

    Correct, but the memory slots aren’t just standard SPI like the audio shield, they are FlexSPI so they show up as address space which can be used to extend the ram or flash memory of the Teensy...
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    I would imagine an entirely different audio...

    I would imagine an entirely different audio object would have to be made to do this, the current wavetable object uses a pointer to the address where the wavetable is stored which can't be emulated...
  13. 1. With a W5500 I would expect the same...

    1. With a W5500 I would expect the same performance between every Teensy, the builtin Ethernet on the upcoming T4 would be faster though.
    2. The bottle neck is in the SPI communication to a W5500,...
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    I did both and they both seem to be behind by one...

    I did both and they both seem to be behind by one frame, which I believe is within spec if my hardware only starts to transmit the current frame when it is being displayed like I would expect it to....
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    I have a couple of SPI displays, I could try one...

    I have a couple of SPI displays, I could try one of those.
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    Using your example program, slightly modified to...

    Using your example program, slightly modified to use the ADC on a Teensy 3.6 here's the results of the difference in time between my generator and what the serial monitor shows in slow motion.
    ...
  17. I have some ADAT hardware I just to don’t have...

    I have some ADAT hardware I just to don’t have the right LEDs to test it with since I’ve never had the need to hook up a Teensy to my audio equipment.
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    No I get what you were going for and I do agree...

    No I get what you were going for and I do agree there is probably a better format that could be used like directly reading soundfont files, but at the time I figured it was easier to use the same...
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    The established format is the files generated...

    The established format is the files generated from the Teensy Soundfont Decoder, which as the name suggest converts soundfonts into the correct format that I’m parsing. I’ve tested it with at least...
  20. Like I said the checksum is probably being...

    Like I said the checksum is probably being calculated wrong because I have no point of reference to go on as to how it handles rollover. If you can provide some more examples like you did in message...
  21. Actually try fixing the checksums so they are...

    Actually try fixing the checksums so they are actually the right data type


    uint16_t data_checksum_temp = 0;
  22. Likely the checksum rollover is different, I...

    Likely the checksum rollover is different, I would need more examples to verify how it should be.
  23. Regarding length, you don't want to read a fixed...

    Regarding length, you don't want to read a fixed number of bytes with this since it can be variable and you want to be able to handle any data errors. So you have to start with only reading one byte...
  24. The checksum appears to be a simple sum of the...

    The checksum appears to be a simple sum of the bytes, 3E + A4 + 1 + 7 = EA, it could handle rollover in different ways though and since I don’t have an example to go off of I can just say it most...
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    Wavetable Synthesis From SD Card

    As a cool proof of concept I wanted to see how complicated it would be to read wavetables off of an SD card instead of having them be limited by the flash memory of the Teensy. Now since I'm...
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    This line from Wikipedia suggests that latency is...

    This line from Wikipedia suggests that latency is well within spec.
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    The extra processing power of a Teensy 4.0 should...

    The extra processing power of a Teensy 4.0 should be able to handle the shorter blocks if anything.
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    I’ve been playing around with new and delete for...

    I’ve been playing around with new and delete for creating variable wavetable arrays from an SD card for dynamic wavetable synthesis instead of being limited to what fits in flash memory. Caution...
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    Looks like you have a variable with the same name...

    Looks like you have a variable with the same name as the function “onControlChange” so one or other needs to be changed to a different name.
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    I feel like this could be built off of the...

    I feel like this could be built off of the waveform object since it is just a square wave but I don't know enough about the audio library to do it myself, if it's any help this is the format of an...
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    The good thing is you can use the same control...

    The good thing is you can use the same control change callback function between all the libraries so without even having all the hardware you aer able to test this while only being connected to a...
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    If your MIDI controller is only USB midi you’ll...

    If your MIDI controller is only USB midi you’ll be much better off using either a T3.6 or T4.0 which have a second USB port that can be used as a host for other USB devices like the one you linked....
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    After running some quick tests I haven't been...

    After running some quick tests I haven't been able to reproduce either of your issues using the latest MacOS Catalina 10.15.2 to any degree of certainty, on the first launch of the IDE when doing...
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    That is by design, but it’s not Serial being that...

    That is by design, but it’s not Serial being that it won’t work with normal serial monitors since it’s a special HID serial emulation designed for the Teensy monitor. All previous Teensy devices have...
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    After installing MacOS-X 10.8 to 10.14 over the...

    After installing MacOS-X 10.8 to 10.14 over the MacOS Catalina 10.15 app I can confirm the same bug with "Serial + MIDI", but after compiling with normal "MIDI" it seems to work as expected while...
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    Teensy Loader does say beta 2, but nothing has...

    Teensy Loader does say beta 2, but nothing has been changed in the cores folder like it should be.
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    The Catalina one is still using Teensyduino 1.49...

    The Catalina one is still using Teensyduino 1.49 beta 1.
    18416
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    I assume it works properly, I tested a few...

    I assume it works properly, I tested a few different programs with compile and uploads that all went through without any problems, at least nothing different from my other Arduino installs from...
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    The Teensy Loader from post #28 has dark mode...

    The Teensy Loader from post #28 has dark mode support while the new one doesn't, is that something that can be added back?
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    I didn't have to right click while connected to...

    I didn't have to right click while connected to the internet or while off of it, it verified the app seemingly fine, and I know even with SIP off I do have to right click + open for some other...
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    It’s likely different because you may have still...

    It’s likely different because you may have still been connected to the internet, mine normally look like that when I’m connected the internet.
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    It appears to have worked fine without being...

    It appears to have worked fine without being connected to the internet.
    18324
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    I can certainly test stuff on Catalina since it...

    I can certainly test stuff on Catalina since it is what I use to dev with so if there is any problems I’m sure I’ll run into it at some point, I do have SIP disabled so I don’t normally worry about...
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    I recently updated to MacOS Catalina and using my...

    I recently updated to MacOS Catalina and using my previous installs of Arduino after giving them access in the system preferences I have had no problems with it.
  45. Based on Ohms law your 100 ohm resistor allows...

    Based on Ohms law your 100 ohm resistor allows 33ma to be drawn from the Teensy which is likely much more than the 4.0 can handle. 300 ohm also seems a little high at 11ma, I don’t know what the max...
  46. As long as your wires have a solid connection you...

    As long as your wires have a solid connection you can get away without soldering for prototyping, I typically use alligator clips so I know the connection has some strength to it. If your Teensy is...
  47. That would be especially useful if it had a...

    That would be especially useful if it had a bi-color LED so it would light up a different color when itís wired backwards, the circuitry is the exact same that you already have built just using a...
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    USB controllers:...

    USB controllers: https://forum.pjrc.com/threads/49099-T3-6-USB-Host-Joysticks
    Bluetooth controllers: https://forum.pjrc.com/threads/49358-T3-6-USB-Host-Bluetooth
    Looks like they work already.
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    You don’t need a shield so the library doesn’t...

    You don’t need a shield so the library doesn’t apply to this.
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    This is the library you want to use with the...

    This is the library you want to use with the second USB port for host functions: https://github.com/PaulStoffregen/USBHost_t36
    I believe it already has support for Xbox and PS controllers.
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