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    Paul has the schematics for all his boards posted...

    Paul has the schematics for all his boards posted on the store page, here.
  2. Check through Constantin's library...

    Check through Constantin's library, you might find one that does what you want.
  3. I've used craft-type hot glue on boards before...

    I've used craft-type hot glue on boards before for similar purposes with no ill effects on the circuit. The type I used stuck, but was able to be peeled off later (actually worked in my favor, may...
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    HWGuy to the rescue on rotated crystals again. He...

    HWGuy to the rescue on rotated crystals again. He caught my same goof (after I spun the boards, as I didn't post beforehand), which fixed a startup issue I had (no functioning crystal will do...
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    Kudos to you for the link. I had been wanting to...

    Kudos to you for the link. I had been wanting to get the last 7.x version just to have it (since I have a license for v7 that I intend to stay with - currently v7.5 installed), but couldn't seem to...
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    All XCTU does is communicate over Serial to the...

    All XCTU does is communicate over Serial to the XBee. Which is the same method you will be communicating with the XBee on your Teensy. So once you have it configured in XCTU, you ought to be able to...
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    Correct, you can leave the trace alone then. And...

    Correct, you can leave the trace alone then. And 5V through VUSB, the USB connector itself, or VIN.
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    VUSB and VIN are one and the same if the...

    VUSB and VIN are one and the same if the trace/jumper is not cut. You can supply 5V through either header to power the on-board voltage regulator, but do not connect a USB cable from your computer to...
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    You can feed either 3.6-6V to the Teensy via the...

    You can feed either 3.6-6V to the Teensy via the Vin+Gnd pins (which will then drop that voltage to 3.3V via the Teensy's regulator), OR a regulated 3.3V to the 3.3V+Gnd pins. In either case you will...
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    Teensy's regulator is the one limited to a 250mA...

    Teensy's regulator is the one limited to a 250mA output, so no, you should not draw more than ~250mA from the Teensy. It simply cannot drop a 5V input to 3.3V without thermal issues (all the extra...
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    Well, I have something broken in my setup I'd...

    Well, I have something broken in my setup I'd say. A sensor that I've used a fair bit in the last couple of years and I am 100% positive is a Mode3 device (datasheet says so, internet agrees, and it...
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    Is this a phone charger USB cable? Many charger...

    Is this a phone charger USB cable? Many charger microUSB cables only have the power and ground lines, and not the data lines, which would cause you to receive power to the board, but no communication...
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    I guess I wasn't quite clear enough. I did just...

    I guess I wasn't quite clear enough. I did just this, anything but SPI Mode 0 returns 0x00. Mode 0 returns 0x68, which is correct according to the datasheet.

    My question is WHY, when the...
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    Ah yes, Flash chips don't need the flag. Probably...

    Ah yes, Flash chips don't need the flag. Probably because read and write are explicit separate commands, whereas sensors have all these configuration registers and so just have the high bit to...
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    Interesting, usually there has been for the...

    Interesting, usually there has been for the sensors I've used, such as this and a number of ST accelerometers and gyros. It looks like I clipped part of the quote above, here is number 5:
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    SPI Mode Confusion

    I'm finally getting back to a Teensy-based datalogger project of mine. Among other sensors, one I am using is the ITG-3701 from Invensense. Here is the datasheet and here is the register map.

    My...
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    ToPi, if you have one of these boards in hand...

    ToPi, if you have one of these boards in hand already, you should have recieved an information card with it that has a note about max current draw. If you don't have one yet, see this post for more...
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    Yea, I remember the constant streams of posts...

    Yea, I remember the constant streams of posts about issues with early 1.6.x installations... I waited those out until things seemed to calm down and jumped from 1.0.6->1.6.5 and had no noticed issues...
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    If you skim through my prior posts on this...

    If you skim through my prior posts on this (perhaps you already did), I did just that (installed Teensyduino on top of the existing install of Arduino and Teensydunio) and seemed to have everything...
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    Well, after being away for the last few days, I...

    Well, after being away for the last few days, I was able to get back to my installation issue. I still could not get my existing installs to get an out-of-the-box install of Teensyduino working for...
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    I have 2 machines I've been trying this on, I...

    I have 2 machines I've been trying this on, I only have access to one at the moment, and I've only tried the "final" 1.30 off the main PJRC site on it. It reports Arduino 1.6.5, Teensyduino 1.30. I...
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    I shouldn't, I use the installer and not a...

    I shouldn't, I use the installer and not a zip/standalone setup, and any updates go to the same location (plus I've updated Teensyduino a couple times on both these installs without an IDE change). A...
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    I'm having an issue getting this version (and...

    I'm having an issue getting this version (and v.1.30 final in fact) installed fully. My 3.5 and 3.6 boards arrived this week and last night I went to update Teensyduino so I could at least get them...
  24. It looks more like the top board was coupled to...

    It looks more like the top board was coupled to the bottom board in your image if you ask me. The lifted pads on the bottom look to match the extra on the top board, and the second set of mouse bites...
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    One of these days I will update past 1.6.5R5 and...

    One of these days I will update past 1.6.5R5 and get to play with the serial plotter :) I do like the basic but functional look of this screenshot though.
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    Have a look at the pinout diagrams...

    Have a look at the pinout diagrams (you should have also gotten this as a card with your Teensy) for which pins can interrupt (labeled "int" in the case of the LC).

    As for pullups, there is an...
  27. It sounds like you may have cut the trace on the...

    It sounds like you may have cut the trace on the back connecting Vin and VUSB, because they are connected as shipped from PJRC. If you have a multimeter, check the voltage on each of those pins when...
  28. I've had good luck with just an old electric...

    I've had good luck with just an old electric griddle (i.e. a pancake griddle) we have knocking around here (note: don't use it for food ever again!). Stencils from OSHStencil. I bought a tube of Chip...
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    As posted in reply #7: That's a very easy spec...

    As posted in reply #7:
    That's a very easy spec to look up on DigiKey. Pick one in the package size you prefer (I use 0603 whenever I can personally).
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    I seem to recall the Adafruit L3GD20 library does...

    I seem to recall the Adafruit L3GD20 library does bit-bang SPI, instead of using the hardware SPI, unless they're changed that in more recent versions. I wonder if that could be causing the issue?...
  31. The long leg will be the positive side (assuming...

    The long leg will be the positive side (assuming the legs haven't been cut/modified before). Usually there will be a white/light-colored stripe on the can itself marking the negative side too. If you...
  32. No, not if USB and the battery are never...

    No, not if USB and the battery are never connected at the same time.
  33. Nothing has changed on this as far as I know, and...

    Nothing has changed on this as far as I know, and I believe Paul has said it won't happen for a while yet, if ever. I did a Teensy 3.2-based board recently, and another user here said the following:
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    Not Paul, but yes if you want USB Host Mode, see...

    Not Paul, but yes if you want USB Host Mode, see post #2 in this thread:

    It sounds like you've definitely seen the T3.2 schematic: https://www.pjrc.com/teensy/schematic.html. The MKL02 and MKL04...
  35. To your first question, it should certainly be...

    To your first question, it should certainly be possible, yes. Though you will still still need to solder on the pin headers to both boards so they can plug into the breadboard. It also looks like...
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    The via-in-pad for the crystal jumped out at me...

    The via-in-pad for the crystal jumped out at me too. Further, Paul's 2-layer routing recommendation for the crystal is to ground it to its own little ground plane that grounds right to the adjacent...
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    Yes, you can feed the output of a 3.3V regulator...

    Yes, you can feed the output of a 3.3V regulator into the Teensy (use one of the 3V3 pins). You'll want to cut the trace on the back of the board if you plan to connect USB while the 3.3V supply is...
  38. We actually did this where I work a few years ago...

    We actually did this where I work a few years ago for some PCB boards we needed a few hundred copies of, and didn't want to manually burn ourselves (we don't really do electronics here anyway). If...
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    Well, I pulled off the crystal, spun it 90...

    Well, I pulled off the crystal, spun it 90 degrees, and re-soldered it on. The pads did align such that it would work, though part of the crystal's pads did overhang the PCB's pads. Still no joy, but...
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    For crying out loud...do you have any idea how...

    For crying out loud...do you have any idea how many times I double-checked that when making the footprint.... lmao. I checked for myself too, and there's no question I got it backwards. Must have...
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    Yes, Pin 1 (dimple on the chip) lines up with the...

    Yes, Pin 1 (dimple on the chip) lines up with the pin 1 indicator on the footprint (yours from the V1.0 lib) - that is, the dimple is to the left as viewed like in my OP. Similarly the MKL04 is...
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    Unless you are using an adapter for the XBee that...

    Unless you are using an adapter for the XBee that has a voltage regulator, you'll want to supply 3.3V power to the XBee...they are not 5V tolerant devices.
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    Definitely a good USB cable, I've used it to...

    Definitely a good USB cable, I've used it to program other boards recently, and I checked the continuity from computer end to MK20 just to be sure. And I've tried on 2 completely different computers,...
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    No, ask the stupid questions. I think I had...

    No, ask the stupid questions. I think I had before, but anyway I grounded it, then connected power, then released. No change, including on the logic scanner.

    I didn't leave myself nice test points...
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    Both. Re-did the recording, with D+ on Ch4, D-...

    Both.

    Re-did the recording, with D+ on Ch4, D- on Ch5, and 3V3 from the regulator (downstream of the polyfuse) on Ch6, to see how stable that voltage is (quite).

    6811

    Zoom-in:
    6812
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    I also put the logic analyzer on the USB lines,...

    I also put the logic analyzer on the USB lines, and did a couple plug/unplugs. The first image is where I plugged in and unplugged the board 3 times. The second is a zoom-in of the voltage peak...
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    All the screenshots I uploaded were PNGs (.jpg is...

    All the screenshots I uploaded were PNGs (.jpg is crappy for reading text, which I assume is your point too) that's how they are saved on my computer and I assumed that's how they would upload, but...
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    Yes, I used the TQFP instead of the QFN. I could...

    Yes, I used the TQFP instead of the QFN. I could have handled it, as this board and prior iterations of it has 3 sensor chips in the same 3mm X 3mm 0.5mm pitch but I'm not that strapped for space,...
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    Never thought of doing it that way, though it...

    Never thought of doing it that way, though it makes some sense. Something I'll keep in mind in the future.


    On mine the decoupling cap GND does not connect to the guard ring, I kept them entirely...
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    Custom Teensy Startup Question

    I've got somewhat similar behavior to this timely thread, but I didn't want to clutter that thread up with my potentially different issue.

    I've made my first custom Teensy-based board (versus...
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