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  1. Replies
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    The question seems clear. The functionality...

    The question seems clear.

    The functionality this user is concerned with is 4 posts above. It is USB audio for the Teensy 4, a model getting plenty of press in "maker circles" about its speed and...
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    Oh yeah, lots of noise out there in regards to...

    Oh yeah, lots of noise out there in regards to ESP32. Wear waders. I like the dual core possibilities. For the most part, the arduino core is very much the same for the gazillion variant boards. ...
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    Linux mint 19.3 "Tricia", Arduino 1.8.10, T4...

    Linux mint 19.3 "Tricia", Arduino 1.8.10, T4 final beta hardware.

    Getting "Error when uploading sketch" warning, but the sketch actually uploads and appears to execute.

    This occurred with...
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    I'm no expert, but after some trial I set the...

    I'm no expert, but after some trial I set the temp to 20 degrees c above the solder paste temp and leave the flow low. Remains to be seen if I'll damage the gun that way, the temp is at the low end...
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    18598 Yes, that's the plan, more or less. I...

    18598

    Yes, that's the plan, more or less. I have some MG Chemicals heat cure adhesive on the way to make sure nothing gets dislodged doing things in steps.
    ...
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    I'm waiting to test your assembly instructions. ...

    I'm waiting to test your assembly instructions. I'll be using a preheater and heat gun to solder the surface mount stuff.

    If you happen to have pre-printing data available, that will work just...
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    No issues as with 1.49 b2

    No issues as with 1.49 b2
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    Replacement boards only, thanks

    Replacement boards only, thanks
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    18431 Yeah, I'm seeing exactly what Defragster...

    18431

    Yeah, I'm seeing exactly what Defragster is describing. Looks like the error may only be on the flex cable?
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    Received, much thanks. Ordering extra T4...

    Received, much thanks.

    Ordering extra T4 boards Friday. Will likely wait until detailed instructions are available so as to test those as well.

    I do have a usb microscope.
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    attached T4 previously flashed with "Keyboard...

    attached T4 previously flashed with "Keyboard Simple" sketch to windows 10 notebook computer. It rebooted, and failed to acknowledge the built in keyboard. Another reboot corrected this.

    A...
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    Installed on linux mint 19.2 Tina, XFCE desktop,...

    Installed on linux mint 19.2 Tina, XFCE desktop, Arduino 1.8.10

    USB Midi example " InputRead " works as expected.

    USB Keyboard example "Simple"... "all hell" breaks loose. Random applications...
  13. The library examples compile for me for all 32...

    The library examples compile for me for all 32 bit Teensy boards.

    You should know in advance that it is relatively easy to destroy these units by setting the gain too high or ... uhm... feeding...
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    Im interested. I just obtained reflow...

    Im interested.

    I just obtained reflow soldering equipment, looks like good practice.

    Thanks in advance
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    ^ This is why I don't say much here.

    ^ This is why I don't say much here.
  16. That circuit was copied from the sim800L...

    That circuit was copied from the sim800L datasheet ( cellphone chip) and is definitely an extreme measure... but it works.

    I also use MG Chemicals' 841AR nickel conductive shield paint to good...
  17. Try the usual decoupling capacitor voodoo, large...

    Try the usual decoupling capacitor voodoo, large ground plane, diodes..17925

    Noise killing appears to me to be more alchemy than science.


    This is from a cellphone project, the frequencies...
  18. Also... LM358 may not be your best choice powered...

    Also... LM358 may not be your best choice powered by the teensy. Id try a TS922. Low power, rail to rail tolerant, very low noise.
  19. Long shot, if you still have issue after checking...

    Long shot, if you still have issue after checking for ground loops:

    Try lowering the current to the electrodes to a minimum that still allows function.

    Register 0x5C default is 0x20. Try...
  20. I use the DAC outs on the 3.6 to create the...

    I use the DAC outs on the 3.6 to create the oscilloscope function on my multi effect box. They're run through series resistors right into nearby analog inputs.

    The actual audio goes out through...
  21. Thread: Bum 3.6?

    by ETMoody3
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    Thanks. Not a difficult target to hit: 17620...

    Thanks.

    Not a difficult target to hit: 17620

    I call one dead teensy out of all of them I've bought acceptable success.
  22. Thread: Bum 3.6?

    by ETMoody3
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    Yup, tried all the standard things before...

    Yup, tried all the standard things before posting. 15 sec, different usb cable, different computer, different TD version...( always have the last known stable version on another machine )
    ...
  23. Thread: Bum 3.6?

    by ETMoody3
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    The first and only time it was recognized and...

    The first and only time it was recognized and took an upload was after soldering, and continuity/ short testing , a step *always* taken.

    Initially powered, it showed the blink program. After...
  24. Thread: Bum 3.6?

    by ETMoody3
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    Hmm... on non responsive 3.6, reset is floating....

    Hmm... on non responsive 3.6, reset is floating. Program reads 3.298 v

    I have read what might be every marginally related post a search turns up, and this is the only test that turned up a...
  25. Thread: Bum 3.6?

    by ETMoody3
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    Pictured is the functional unit, but I'll...

    Pictured is the functional unit, but I'll certainly go back over those

    Thanks
  26. Thread: Bum 3.6?

    by ETMoody3
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    Nothing? Not even bad guesses? I'm impressed....

    Nothing? Not even bad guesses?

    I'm impressed. "Speechless" isn't an attribute of this forum.

    My best guess at the moment is roughing up the card getting it out of the low profile sockets...
  27. Thread: Bum 3.6?

    by ETMoody3
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    Yet another 3.6 soldered up and placed in the...

    Yet another 3.6 soldered up and placed in the project works fine, still would like to know how/if/why before I shell out to replace the one that just wasted most of a day for me. 1760817609
  28. Thread: Bum 3.6?

    by ETMoody3
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    Bum 3.6?

    I seem to have a non responsive 3.6. ( PJRC invoice # 77619)

    No need to post code as the code in question works fine on another board.

    The board in question blinked initially, responded to...
  29. Wow, 3$ from the Amazon vendor via slow boat. ...

    Wow, 3$ from the Amazon vendor via slow boat.

    Just sent for two. ( *always* buy a spare)
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    Ah, found them Texas Instruments P82B715 ...

    Ah, found them

    Texas Instruments P82B715

    http://www.ti.com/lit/ds/symlink/p82b715.pdf
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    Yes, 10 meters is approximately 30 ft. As you...

    Yes, 10 meters is approximately 30 ft. As you already know, capacitance is your enemy. Pullups on both ends works reliably
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    Meter is no issue. Put pull-ups on both ends. 30...

    Meter is no issue. Put pull-ups on both ends. 30 feet is the "theoretical " limit.

    Or buy a couple of buffer chips if you're worried. I'm looking for the part numbers
  33. Newer Morley uses a red LED. So does digitech...

    Newer Morley uses a red LED. So does digitech and DOD, probably others. Have fun!
  34. Forgot to mention... velocity is derived from a...

    Forgot to mention... velocity is derived from a simple timing factor, triggered by the IR switch. The analog input gets read a set amount of time afterwards and you create a velocity amount based on...
  35. I took apart the bench test rig two years ago......

    I took apart the bench test rig two years ago... should've taken pictures.

    The photoresistor gives you an analog signal to read with your microcontroller. I was going to use a bunch of atttiny85...
  36. I use the widely available infrared switches...

    I use the widely available infrared switches often used on 3D printers... buy spares because there're not the best made things... I have a 17 key midi pedalboard I hand built that works reliably and...
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    Yup. Not cheap, tho. Worth it, IMO

    Yup. Not cheap, tho. Worth it, IMO
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    Phoenix is a good source of low profile .1"...

    Phoenix is a good source of low profile .1" headers.

    https://www.peconnectors.com/pin-headers-straight-1x-row-.100/hws16317/

    https://www.peconnectors.com/female-headers-pcb-1x-row-.100/hws9446/
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    I'd venture a guess it's a problem specific to...

    I'd venture a guess it's a problem specific to your system, perhaps browser extension woes?

    Latest Win 10, 1903, Chrome browser, not getting the posted error17471
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    Works fine. I have a T3.6 \audio shield based...

    Works fine.

    I have a T3.6 \audio shield based multi effect box with pedalboard, the pedalboard has the MCP23017 chip in it, on the end of 10 ft of cord, running happy at 3.3 v.
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    There has to be software on the Windows computer...

    There has to be software on the Windows computer that completes the connection.

    Simply plugging your usb devices ( keyboards, controllers, Teensy) into the computer does NOT connect them. For...
  42. Julius Smith’s work is outstanding... The...

    Julius Smith’s work is outstanding...

    The other suggestions here are going to keep me awake for a while. ;)
  43. https://www.pjrc.com/store/pt8211_kit.html Try...

    https://www.pjrc.com/store/pt8211_kit.html

    Try this
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    Tsk tsk. Need is such a needy word. Need it...

    Tsk tsk. Need is such a needy word.

    Need it buy it store it, right along with all the other stuff no one needs.

    Use one, buy two replacements, right? Doesn’t everyone?

    Uhm ...Right?
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    Yes it does, but the connections are in very...

    Yes it does, but the connections are in very different places
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    I have used solid wire clips made from 22ga. to...

    I have used solid wire clips made from 22ga. to hold down boards that I’ve used pogo pins on. Just need to watch where they grab, a little planning goes a long way.
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    That’s more than a good starting place, much...

    That’s more than a good starting place, much gratitude for sharing the files.

    I’ve bought TallDog’s board for the 3.5/3.6 and playing with the beta rig I definitely see the “need” for a...
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    @KurtE I like that, are they available?

    @KurtE

    I like that, are they available?
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    Yoiks and away!

    Yoiks and away!
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    I do have to get up on a ladder to get the whole...

    I do have to get up on a ladder to get the whole rig in a pic.

    17119

    I can’t stress enough the importance of starting on paper, draw things out as best you can.
    I draw panels full scale to...
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