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    220V can be lethal - be careful

    Hi, my take on measuring 220V is that if you are asking how to do it, you shouldn't do it. 220V can be lethal and requires special safety precautions as its lethal. Be careful! I have had some...
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    myNewt links

    http://mynewt.apache.org has an MK64 /FRDM-K64 that is part of the targets, and seems like shoutldn't be too hard to adapt for a Teensy3.5 & 3.6...
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    Yeah a Beagle Usb HS 480!!!!!Mhz

    Oh Yea I guess I'm not hanging out in the coolest of places - nice pic ......
    good news you got a beagle 480!!!!!


    9392

    I'm jealous!!! :) , thinking of it myself, and been keeping any...
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    As I understand it, its only the FS port working....

    As I understand it, its only the FS port working. HS is in the works. Paul verified the PLL at 480Mhz, but there is still a bunch of sw.
    Its a different interface from the FS, and the chances are...
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    Hi Paul I'm working on the Snooze/T36, what pins...

    Hi Paul
    I'm working on the Snooze/T36, what pins do I need to keep as output, Which is the VUSBHOST _En pin. ?
    thanks
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    Hi Andrew, I ran a test of the UHS30/Teensy36...

    Hi Andrew,
    I ran a test of the UHS30/Teensy36 FS CDC_ACM connecting to Particle.io / photon_wifi chip - its run overnight, very stable with 121,000 msgs.

    For anybody interested, the test setup...
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    At its core USB protocols look like I2C on...

    At its core USB protocols look like I2C on steriods - just to provide a comparison - but no end device data sheets to define how to make the master tickle the slave.

    While the USB specification...
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    Here is a link - Andrew has created an updated...

    Here is a link - Andrew has created an updated version of the above
    https://github.com/felis/UHS30/wiki/Arduino-Install-and-configure-for-Netbeans

    We've been testing the software - for me that is...
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    Teensy36 debugging

    On Teensy36 for debugging using AdafruitBlueUsbTtl

    GND
    Pin0 Rx to Green
    Pin1 Tx to White

    Pin13 for Oscilloscope monitoring

    8389
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    Build UHS30 and download

    #now to try the build
    cd ~/Arduino/libraries/UHS_host/UHS_KINETIS_EHCI/examples/KINETIS_EHCI_TEST (master)]$
    $ make
    (optional if fails: mkdir ~/Arduino/hardware)
    $ make upload # this says it...
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    Setup Netbeans IDE

    download from here - I picked the "All" option and configured it on installing.
    netbeans.org/downloads

    Install per instructions.

    Then import compiler settings from the attached...
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    Download & Setup UHS30

    This section assumes you want to operate on a fork of UHS30 - you can make adjustments as needed below.
    The UHS30 project requires Andrew's Arduino_Make - I put it with my other git
    cd ~/git
    git...
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    Install Arduino on linux/Ubuntu

    somewhat of a repeat on pjrc.com/teensy/td_download must match installed arduino version
    ubuntuhandbook.org/index.php/2015/11/install-arduino-ide-1-6-6-ubuntu

    1) Download and extract Arduino ...
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    Getting going with UHS30 build

    Well I got some help in being able to compile and download UHS30. Thankyou thankyou Andrew @xxxajk for your time. This took about 4 afternoons this week, to knit it all together.

    What the...
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    Gosh ...... I guess you've posted results from...

    Gosh ...... I guess you've posted results from the tests you've done ..... but.... with a pick-n-place running on Sunday, sounds like you have a hot customer delivery deadline .

    I'll look over...
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    Hey @ xxxajk thanks for the posts and sharing....

    Hey @ xxxajk thanks for the posts and sharing. I've received my two teenys3.6 and first thing I'm trying is your USB EHCI tests.
    However, haven't used Teensy for some time, and eyeballing the code, ...
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    Ok many thanks. That makes it simple to connect...

    Ok many thanks. That makes it simple to connect to VREFH. :)
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    Hello Paul Thanks for the quick response. Can...

    Hello Paul
    Thanks for the quick response. Can you explain or give a diagram of how the KL26Z VREFH is connected to the AREF pin. Its likely to be about 2.4V. Thanks.
    I'm promoting the TeensyLC in...
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    Hi I need to be able to define an accurate...

    Hi
    I need to be able to define an accurate Reference voltage for an LC, I'm still working out if its 2.5V or it could be 1.0V - whats the recommended way of doing it.
    I've done a search on this...
  20. I'm trying the KDS300 with a Segger J-Link. It is...

    I'm trying the KDS300 with a Segger J-Link. It is a sophisticated cockpit for setting up initialization for any Kinetis processor,
    Its not for the newbie - Teensy with Arduino have done such...
  21. The low power down is a complex area -the clocks...

    The low power down is a complex area -the clocks take the power, so just going to sleep I think still leaves the clocks running - which would be at 16MHz.
    I believe - and I'm also experimenting...
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    mini54-->KL02

    Awesome, purchased 4 boards when released, and just got my TeensyLCs working from scratch.
    New Arduino install on Windows8.1 - I did a quick test of the Analog read with Led Flash (pin 13) and it...
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    Fantastic Spreadsheet BTW though Note 6) You say...

    Fantastic Spreadsheet
    BTW though Note 6) You say no RTC - the silicon does implement an RTC, however it requires an external clock oscillator to drive RTC_CLKIN/PTC1 - but can't figure out if PTC1...
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    As some one who has been in embedded devices a...

    As some one who has been in embedded devices a looong time, Intel hasn't been leading edge in this semiconductor market segment - just a bit of history.
    Embbed is an expanding market and there are...
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    In my experience Intel has been full of promises...

    In my experience Intel has been full of promises about embedded devices - and they occasionally have a hit - like the 8051 (!:)- but otherwise haven't addressed major power problems.
    Wearables needs...
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    I've just brought up a board with a MK20DX on it....

    I've just brought up a board with a MK20DX on it.
    Technically my understanding is the MK20DX comes up on its internal 4Mhz oscillator and then under software control switches to other clock...
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    I completely agree with Constantin's approach -...

    I completely agree with Constantin's approach - that an MCP3911 seems very viable though I haven't looked in detail at the specs and allows a better isolation of the Analog grounds.
    For high...
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    Hi, I was just reading this thread. My comment...

    Hi, I was just reading this thread.

    My comment would be -
    1)I wonder what is the top end frequency of voltage and current measurement you need to take - ie seems like you are constructing a...
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    I did an EI squirrel RS485 ModBus interface for...

    I did an EI squirrel RS485 ModBus interface for the hw Imp (electricImp.com) and have had it running in prototype form for a year.
    I would guess there is far amount of machine specific...
  30. Hi Froeber, The Teensy3 is fantastic for a...

    Hi Froeber,
    The Teensy3 is fantastic for a production article, and the support to make it work with the Arduino IDE, and the libs like Duff are doing - all based on the amazing infrastructure by...
  31. froeber thanks for posting your experience and...

    froeber thanks for posting your experience and for your solution.
    I've got it on my list to get to low power as well, and building low uA into my power usage model, so useful to have some real...
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    Hey Andology, 1)if you are bringing something...

    Hey Andology,
    1)if you are bringing something new to market, then the rule of thumb is that you'll put just as much effort in the marketing side as the technical evolution side.
    2) The marketing...
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    Thanks. Really appreciate the work you've put...

    Thanks. Really appreciate the work you've put into the Teensy3, though as with the principles of open hardware I've found that I have some choices to make.
    It doesn't make sense for my "wireless...
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    Yup I really appreciate Paul's posts and...

    Yup I really appreciate Paul's posts and technical depth.
    I was wondering does the MINI54 support the a generic interface or is only keyed to the MK20DX128VLH5/MK20DX256VLH7. I'm looking at using...
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    I went to the Massimo Banzi talk Sat 18th. The...

    I went to the Massimo Banzi talk Sat 18th. The IDE 2.0 talked about as running off the Arduino TRE Sitarro processor - a JS IDE.
    The Beagle Bone Black (TI Sitarro) has been using the Cloud9 JS ide,...
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    Thanks - what did you generate it in. I was...

    Thanks - what did you generate it in.
    I was just looking at if there was already the PCB ordered I could piggyback on it if you used on the places that do that. If there isn't a PCB already I'll...
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    Hi Did you ever produce this board and get it...

    Hi Did you ever produce this board and get it working?
    and is the PCB available?

    many thanks
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    For analog interfaces you may also want to look...

    For analog interfaces you may also want to look at the temperature specification for the equipment and the effect this has on the potential change in Vref and resistors (tcr - temperature coeffient...
  39. Well that is interesting. The Teensy3.1 Vin says...

    Well that is interesting.
    The Teensy3.1 Vin says 3.7V to 5.5V and when I use the DeepSleep_simple and sleep setting on GPIO_WAKE and set the voltage (+/- 0.1V)
    3.8V -->stable 0.17mA
    3.6V...
  40. duff, really appreciate the postings on github. ...

    duff, really appreciate the postings on github.
    Github is the magic place to share - and has made it so easy for sharing code like you are doing.
    Usually its great to keep the "trunk" on the...
  41. Great - thats got it working. I can get the...

    Great - thats got it working.
    I can get the DeepSleep_simple compiling/downloaded/working
    Also compiles Sleep_Advanced,
    and working through those examples.

    However Hibernate_Simple throws ...
  42. Thanks for the response. On the install I can't...

    Thanks for the response. On the install I can't see what you mean by delete the Master.
    So I've probably not got something set up right or doing a procedure wrong so I'll run through it, and any...
  43. Hey duff, great to see the lib and thanks for...

    Hey duff, great to see the lib and thanks for publishing it.
    I'm working through your methods and looking at the manual. I'd like to integrate low power into a simple event tasking system I'm...
  44. Thanks for the posts, the...

    Thanks for the posts, the WRITE_RESTART(0x5FA0004) worked for me.
    As its a visible debug element, and I generate a system status report when the user inputs '?'
    I generate the following

    ...
  45. Low Power is typically a design requirement IF...

    Low Power is typically a design requirement IF running off batteries or solar powered.
    I'm suggesting if low power usage is a design requirement then the software needs to be an event based design...
  46. Thanks ... interesting snippet, and thanks for...

    Thanks ... interesting snippet, and thanks for the explanation, and usage of this.
  47. You know that may keep it really simple and...

    You know that may keep it really simple and deterministic to implement the decoding of running the tasks from a switch and each case deals with 'C' or 'C++', and then taskIds can be posted through a...
  48. Low Power with Event based software architecture brainstorm

    Hi I'm curious if anybody else is working extending the lower power paradigm with an event driven model.

    I've got the Teensy31 and kudos to Paul for putting together a low cost and low power...
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    hi nox - that would be great to hear what you...

    hi nox - that would be great to hear what you found to work.
    The compile options was just trying out some variations based on another project with the gcc 4.8.3 . It turns out the gcc 4.7 wasn't...
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    Hi Headroom - thanks for link. Yes I would...

    Hi Headroom - thanks for link.
    Yes I would rather get on with my project - its just making a guess as to what the best methods are and where the trip wires are :).
    I do appreciate the help and...
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