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  1. 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...
  2. 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...
  3. 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.
  4. 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...
  5. 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...
  6. Thread: Bum 3.6?

    by ETMoody3
    Replies
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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.
  7. Thread: Bum 3.6?

    by ETMoody3
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    199

    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 )
    ...
  8. Thread: Bum 3.6?

    by ETMoody3
    Replies
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    199

    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...
  9. Thread: Bum 3.6?

    by ETMoody3
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    199

    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...
  10. Thread: Bum 3.6?

    by ETMoody3
    Replies
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    199

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

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

    Thanks
  11. Thread: Bum 3.6?

    by ETMoody3
    Replies
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    199

    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...
  12. Thread: Bum 3.6?

    by ETMoody3
    Replies
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    199

    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
  13. Thread: Bum 3.6?

    by ETMoody3
    Replies
    13
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    199

    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...
  14. 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
  18. Newer Morley uses a red LED. So does digitech...

    Newer Morley uses a red LED. So does digitech and DOD, probably others. Have fun!
  19. 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...
  20. 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...
  21. 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...
  27. 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. ;)
  28. 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
  31. Replies
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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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    17116 17117 17118

    17116
    17117
    17118
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    Go for it. Why limit yourself to 16 of anything?...

    Go for it. Why limit yourself to 16 of anything?

    I made one with touchscreen, 16 “faders” ( pots) and 10 expression pedals, 3 encoders and 6 midi to CV channels. On a 3.5.

    You can add usb...
  38. Been busy. Actually, no I did not try the code, ...

    Been busy. Actually, no I did not try the code, I recreated the conditions in a far more complicated device I built that uses the Freeverb. This code I used has live controls for room size and...
  39. Wondering this as well.

    Wondering this as well.
  40. I’m following this as well... I haven’t been...

    I’m following this as well...

    I haven’t been able to replicate the error myself... but I was going to suggest what Christof just suggested and possibly to put a low pass filter or a band pass...
  41. I charge US75$/hr ;). I’ve been told I undersell...

    I charge US75$/hr ;). I’ve been told I undersell myself at that rate.

    All the resources you need to learn are available to you, free.
    My best advice to anyone learning to code is to slow down,...
  42. You’re looking at rewriting both the setup and...

    You’re looking at rewriting both the setup and loop so much I wouldn’t call it “changing” I’d call it a “ page one re-write”.

    The sensor will work as you instruct.

    You need to have the...
  43. MCP23017 works fine with Teensy

    MCP23017 works fine with Teensy
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    1.47 b4 installed on aarch64 ubuntu..."Jetson...

    1.47 b4 installed on aarch64 ubuntu..."Jetson Nano flavor".
    Will try any known torture test, just doing "normal" things. Because I'm not. Right.


    Nothing to add.
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    I'm sorry, I should clarify that I increased the...

    I'm sorry, I should clarify that I increased the delay times in the example to 1100 2200 3300 respectively. Before, this showed no difference from the unaltered example.

    Noting that I'm not...
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    Well, before I would get no change in reported...

    Well, before I would get no change in reported ram usage even if I increased the audio blocks in a sketch to say, 1200. The compiler would halt above 2000. I just saw upper 30% area with the...
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    1.47 beta 4 tested on Raspberry Pi.( will break...

    1.47 beta 4 tested on Raspberry Pi.( will break out the Jetson after lunch )

    Noting the new size reports on a few compile/uploads. I was wondering about this before but hadn't dug around for...
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    I would volunteer that it's fair to call it "Pin...

    I would volunteer that it's fair to call it "Pin Compatible" with 3.2 (with a few differences)
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    Indeed, you have found the marble in the oatmeal....

    Indeed, you have found the marble in the oatmeal.

    Relative to marbles, what we have here is a warehouse to put them in.

    As always someone else asks the questions I have. I'm looking for...
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    Well, I haven't copied the new rules in (yet). ...

    Well, I haven't copied the new rules in (yet). Instead I removed ModemManager.

    It was also keeping a USBTinyISP from working correctly.
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