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  1. The Y splitter should be fine since the buttons...

    The Y splitter should be fine since the buttons are open circuit when not pressed so it will give the needed OR logic.

    The actual teensy activitation is a bit trickier. The safe option is to use a...
  2. Basic suggestion is to add a delay(100); to your...

    Basic suggestion is to add a delay(100); to your Teensy loop so there is time for all the other USB things to happen rather than data as fast as the ADC can cycle.
  3. The basic solution is to add an Amplfier block to...

    The basic solution is to add an Amplfier block to your patch system, between the SD card and the i2S output
    https://www.pjrc.com/teensy/gui/?info=AudioAmplifier

    You will need to map the 0-1024...
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    For a T3.2 it should be using interrupts by...

    For a T3.2 it should be using interrupts by default without any action from you, as I understand it the code you had was intended for T1/T2 8 bit Teensyies. If you were using the encoders on say a...
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    Confirm this is a Teensy LC or 3.2? Below...

    Confirm this is a Teensy LC or 3.2? Below assumes the newer flavours, if you are using a T2 that will change things.

    For midi control type inputs you should be running out of pins before you run...
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    Which tutorial are you following? For all...

    Which tutorial are you following?

    For all current generation Teensy most/all the pins will default to interrupt operation
    https://www.pjrc.com/teensy/td_libs_Encoder.html
    If you are seeing more...
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    There are some unasnwered questions here so...

    There are some unasnwered questions here so tricky to provide perfect answers.

    Putting 7V without current limit straight into a Teensy will damage things, though the input protection may mean the...
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    The prop shield includes a dedicated Class D amp...

    The prop shield includes a dedicated Class D amp to drive a mono speaker, otherwise you look at something like https://www.adafruit.com/product/3006 or the stero versions. Key thing is using a class...
  9. The resistance will not make any particular...

    The resistance will not make any particular difference to the Teensy and in fact will probably work 'fine' assuming the buttons themselves are reliable. Problems would start to happen if your pullup...
  10. Several different approches, but one is to go...

    Several different approches, but one is to go into the two relevant if(button.fallingEdge()) statements and instead of sending the not, set a previously defined (and zeroed)variable to one, say...
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    The LEDS are already doing PWM when you set the...

    The LEDS are already doing PWM when you set the 0-255 value via an internal controller. All you can do is send red green and blue values in the range of 0-255 to that controller and leave it to PWM...
  12. The Ground pin should be connected to the ground...

    The Ground pin should be connected to the ground plane which should be connected to the USB gnd.
    https://www.pjrc.com/teensy/schematic.html
    (scroll down for LC).

    There are filters on analog gnd...
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    Some suggests steps, apologies if you have...

    Some suggests steps, apologies if you have already done these:
    Have you already swapped the solinoids/drive transistors/control pins?
    Have you used a multimeter to check the IO pins actually...
  14. This may need a photo of your setup along with a...

    This may need a photo of your setup along with a schemetic. As a basic step you can look at the voltage out of the amp unit with a multimeter, and depending on your design use a variable resistor to...
  15. A photo of your setup might be needed here. ...

    A photo of your setup might be needed here.

    Things to do:
    Check that there actually is power on the start of the strip
    load up blink, change it to toggle pin 11 and change the timing to about 5...
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    There is no HID command for point of view, so it...

    There is no HID command for point of view, so it would depend on the game either providing a control mechanism supporting joystick of a POV control or finding what API it does use for VR applications...
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    Getting to grips with Sine is a really useful...

    Getting to grips with Sine is a really useful step in generating all sorts of brightness and other effects that moves in gentle curves hence why I suggested starting with processing which makes...
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    Hard to tell, but the design looks achievable...

    Hard to tell, but the design looks achievable running on a Uno generating the effects live, though would take some care to achieve. Using a Teensy would give a lot more RAM and clock cycles avoiding...
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    For what it is worth have used RCSwitch in in...

    For what it is worth have used RCSwitch in in both modes with a T3.2 without any particular hassle other than the input pins for the library being built around the Arduino Uno interrupt pins, has...
  20. The basic steps are: Install with instructions...

    The basic steps are:
    Install with instructions here
    https://www.pjrc.com/teensy/td_download.html

    Have a look at
    https://www.pjrc.com/teensy/td_keyboard.html
    and...
  21. Several ways to do it, none of them trivial. ...

    Several ways to do it, none of them trivial.

    By personal preference I prefer to generate pattern on the fly using Perlin noise and similar effects but this requires a fair bit of knowledge about...
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    Anything that leaves air inside WILL pull...

    Anything that leaves air inside WILL pull moisture in during temperature cycling. Basic principles are:
    Conformal coatings of various sorts work well, but are tricky with buttons and plugs ...
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    Re programing if sticking to the supported micro...

    Re programing if sticking to the supported micro controllers, common method is to do early versions with bootloaders from PJRC and once you are sure your firmware is solid delete the bootloader from...
  24. Designing your circuit to approximate the 1M...

    Designing your circuit to approximate the 1M input impeadance will improve the precision of your measurements but unless you are really interested in the exact levels it is probably simpler to do a...
  25. Hmm, your matrix processing is going to be...

    Hmm, your matrix processing is going to be interesting. If I am understanding what you are doing that would be defined as an array of 3*2500*uin32_t which is 30k of 256k RAM. Depending on the logic...
  26. The component getting hot is probably the poly...

    The component getting hot is probably the poly fuse (top left corner https://www.pjrc.com/teensy/schematic.html )which means something is drawing excess current. Reasons for that are generally:
    ...
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    If you can, suggest changing your title to...

    If you can, suggest changing your title to specifically refer to the bat detector code, and probably post to that thread.
  28. The sensor data rate should be achievable,...

    The sensor data rate should be achievable, probably even via polling. Driving the amp may get tricky, 100khz square waves are certainly possible, doing it as a since wave is more problematic, depends...
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    As long as you have told Arduino that you want...

    As long as you have told Arduino that you want the USB all modes software loaded your code will have access to both USB keyboard, USB serial and hardware serial data to do whatever you want to code...
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    Good question! The Teensy supports a HID data...

    Good question! The Teensy supports a HID data transfer type to allow Arduino serial in all modes, but only shows up as USB serial to the OS when you have the relevant device type selected. So you...
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    If you already have serial data that the Condor...

    If you already have serial data that the Condor Software understands see file->examples->teensy->usb serial->USBtoSerial

    Depending on how Condor and your source device works you may need to add...
  32. Some checks of your level conversion process...

    Some checks of your level conversion process might be useful, point the standard blink at the pin (7?) and confirm the input to the pixels swings 0 to 5V. Other check is to measure the 5V power...
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    It may be worth looking at some of what Martin of...

    It may be worth looking at some of what Martin of Wintergarten is up to, especially the discussion around latency and timing here https://www.youtube.com/watch?v=dNv8AeZfuUc

    While your methods of...
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    The electronics part is not hugely complex since...

    The electronics part is not hugely complex since there are a number of midi libraries around for either classic serial or USB midi

    The tricky part is getting the forces needed to play the notes...
  35. Re attuation boring method is to just adjust...

    Re attuation boring method is to just adjust volume down below 1V peak to peak and leave it there. My main concern is that headset out these days can be powerful enough to run small speakers wound...
  36. Powering from a USB battery bank will actually...

    Powering from a USB battery bank will actually simplfiy things since it can float. Switching noise can be a potential problem but this is not intended to be a data collection device or anything where...
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    The pinout is intended to match audio cables...

    The pinout is intended to match audio cables intended for a PC motherboard, but I think you have the pinout right, though check your actual jacks since if done as per your photos I think you would...
  38. Headphone to line in can work, but you need to be...

    Headphone to line in can work, but you need to be careful with the maximum volume and what the earth potential is. Normal PC design puts the shield at earth potential but not impossible to find...
  39. There are a bunch of potential issues as you note...

    There are a bunch of potential issues as you note having LEDs doing PWM on the same system as audio. One useful element here is that both Teensies are actually running at 3.3V from internal...
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    You possibly need to post a photo og the button...

    You possibly need to post a photo og the button setup but from the description you are never getting the switch contacts closed/short. A suggested step is to remove the button and replace it with a...
  41. As stated above, you have not provided enough...

    As stated above, you have not provided enough information on what you actually want to do to provide meaningful advice since that depends on mounting/fitting/feel decisions. Quality also matters and...
  42. That one that looks like a playstation thumb...

    That one that looks like a playstation thumb stick is analog, so would need an analog pin and more complex read process but also acts as a true variable stick if that is what you are after.
    ...
  43. I cannot say much on PC driven effects since all...

    I cannot say much on PC driven effects since all mine are light shows generated by the Teensy itself. Most likely the frame rate is driven by the array size. What happens to the frame rate if you...
  44. If the aim is to output 5 two axis joysticks you...

    If the aim is to output 5 two axis joysticks you need 10 axis total, which hits various limits in how joysticks are expected to work. https://forum.pjrc.com/threads/23681-Many-axis-joystick

    You...
  45. If you want the patterns to work out right, yes...

    If you want the patterns to work out right, yes you will need to match the layouts. The code does not care how long the strips are, it just streams data out so if you are just making the strip...
  46. With the grounds disconnected check the voltage...

    With the grounds disconnected check the voltage between Teensy gnd and the ATX power supply. If it is a cheap wallwart it may not be floating the supply, and the ATX supply is most likely using a...
  47. If you are using the Octo library but only 4 of...

    If you are using the Octo library but only 4 of the 8 outputs then the RAM is already allocated and all you are saving is the overhead in getting bytes from Glediator onto the Teensy. That said there...
  48. Depending on what you are trying to do you can...

    Depending on what you are trying to do you can drive the panel from the single teensy+octo. The main constraints are RAM on the Teensy as per the Octo board page, the refresh rate as the individual...
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    The brightness changes being minor at the top end...

    The brightness changes being minor at the top end is a result of how human vision works on a log scale, possibly complicated by real world vs theoretical response by the transistors and LEDS in the...
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    The teensy will not like directly driving 25mA...

    The teensy will not like directly driving 25mA worth of LEDS, but all of the TFTs I have around have a transistor on the backlight pin to make it easy to drive in this situation. Suggest connecting a...
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