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Type: Posts; User: Wozzy

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  1. Replies
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    Thanks for the clarifications... OK I'm going...

    Thanks for the clarifications... OK I'm going back to whacking moles!
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    So I have spam delete privilege, but not "Plus"...

    So I have spam delete privilege, but not "Plus" status.
    Should I refrain from deleting spam for the time being?

    Edit:
    I guess what I really have is spam report privilege, But the spam gets...
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    How do the "plus" users determine the spammer's...

    How do the "plus" users determine the spammer's IP address?
    Also where do we find the moderation area to view the sticky thread?
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    It's generally a good idea to post details and...

    It's generally a good idea to post details and photos about your project and the code that is giving errors.
    (See the "Forum Rule:" in red at the top of the page)

    It's really the only way anyone...
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    Also sometimes turning off your virus scanning...

    Also sometimes turning off your virus scanning helps.
  6. This problem also occurs with low quality or...

    This problem also occurs with low quality or non-compliant USB hubs.
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    How are you supplying power to the Teensy? Are...

    How are you supplying power to the Teensy?
    Are the power supply grounds and the Teensy ground all connected together?
    Some photos of your actual setup and the Code you are running would be helpful...
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    What is the power rating of the power supplies?...

    What is the power rating of the power supplies?
    With 12 strips of 145 pixels and assuming around 50mA for a full white pixel, you can be drawing up to 87A (435W) per 5 V power supply ...
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    You can also use the method described in THIS...

    You can also use the method described in THIS POST to drive your Bicolor LED, from only a single pin.
    This can give you Red Green or Yellow.

    EDIT: Actually, Never Mind... this won't work because...
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    See This...

    See This Post:https://forum.pjrc.com/threads/19336-How-to-repair-a-broken-off-Teensy
  11. Thread: Where to start

    by Wozzy
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    1,490

    For anyone working on a project like this... I...

    For anyone working on a project like this... I noticed while looking at the webpages on this that one problem seems to be that the waterproof transducers attenuate the signal by as much as 40x. There...
  12. Thread: Where to start

    by Wozzy
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    1,490

    It's not the same one as above, but here are two...

    It's not the same one as above, but here are two other well documented Ultrasonic Anemometer projects:

    https://soldernerd.com/arduino-ultrasonic-anemometer/
    Edit: I just noticed that Antiath is a...
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    One idea might be to consider using rotary...

    One idea might be to consider using rotary encoders instead of pots.
    With encoders, you can have as many discreet positions as you like.
    Encoders with detents also can give hepatic feedback so you...
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    Lorenzo, Let's try isolate if the problem is...

    Lorenzo,
    Let's try isolate if the problem is with the encoders or with the LS7366R communication.
    Hook up the Teensy as listed in the file header comments then try to run this program.
    Power the...
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    Lorenzo, I setup a breadboard with a Teensy...

    Lorenzo,

    I setup a breadboard with a Teensy 3.2, LS6377R and and Encoder.
    I ran the code from Posts 7, 9, 20. All of them worked correctly.

    For the code in post #20, I only changed the SS pin...
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    That page is in reference to Teensy 2.0 and 2.0++...

    That page is in reference to Teensy 2.0 and 2.0++ which are 5 V devices
  17. Replies
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    Check out this thread:...

    Check out this thread:
    https://forum.pjrc.com/threads/26803-Hardware-Quadrature-Code-for-Teensy-3-x?highlight=hardware+quadrature

    I've used this method successfully, but only on a Teensy 3.6.
  18. Replies
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    Lorenzo, It looks like your yellow sck wire is...

    Lorenzo,

    It looks like your yellow sck wire is hooked to pin 13 on the Teensy, but the code is defining it as alternate SPI SCK pin 14.
    Try to move the Yellow wire to pin 14.
    Also can you please...
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    Scratch that comment about SS being tied to...

    Scratch that comment about SS being tied to ground.
    I found the board, and it's wired like this:


    LS7366R Teensy
    4 SS 10 SS
    5 SCK 14 ALT SCK
    6 MISO 11 MOSI
    7...
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    Ls7366r

    Here's some code that I successfully used some time ago to read a 50,000 count encoder with a single LSI LS7366R with a Teensy 3.2.

    For my application, I only had one encoder so I tied the SS pin...
  21. No Problem. It always makes people happy if you...

    No Problem.
    It always makes people happy if you post some photos of your working project.
    This thread may help someone else down the road that has similar questions or problems.
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    Do you need the frequency acquisition of all...

    Do you need the frequency acquisition of all channels to be simultaneous, or can you multiplex the the inputs and alternate the samplings?
    With a several MHz input signal, you will only need to...
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    You'll need a receiver that supports SPI Master...

    You'll need a receiver that supports SPI Master mode to talk to the display controller. Possibly an ESP8266 or an ESP32 can do that but there will definitely be some software development involved to...
  24. If you are powering the Teensy and PropShield...

    If you are powering the Teensy and PropShield from the USB, do not hook it to the +5V from the external power supply. If you really want to hook it to the 5V supply, while the USB is hooked up then...
  25. You will definitely need an external power...

    You will definitely need an external power supply.
    Each Pixel can use as much as 60mA, when full bright white. That's over 8 Amps! for a full white 144 LED strip.
    Most USBs only supply 0.5 to 2A.
    ...
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    Opelnut, Depending on your application, you...

    Opelnut,

    Depending on your application, you could possibly use one Teensy to send the raw data via RF to a second Teensy that actually generates the display images which is wired to the SPI...
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    TI ADS1256 8 CH, 24 bit A/D

    I recently purchased an ADS1256 Module for $17.
    The TI ADS1256 is a 24 Bit 8 Channel ADC with SPI communication. It offers a PGA with up to 64x gain and acquisition rates up to 30kHz.
    It does not...
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    artistinfla, I just noticed that your code...

    artistinfla,

    I just noticed that your code indicates using pins 21, 22, and 23 for the motor control signals.
    Your schematic sketch shows the stepper motor controller hooked up to pins 7, 8, and...
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    FYI, This tiny SD6128...

    FYI,

    This tiny SD6128 Stepper motor controller can control stepper motors up to 36V and 2.2A with up to 128 microsteps and it works perfectly with a 3.3v input signal.
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    artistinfla, You might consider using a level...

    artistinfla,

    You might consider using a level shifter to bump your 3.3V signals from the Teensy to 5V.

    Two great examples are the 74HVT245 or the SN74VLC8T245.
  31. Thread: Encoder.h

    by Wozzy
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    Yes. A 2 phase quadrature encoder has 400...

    Yes.
    A 2 phase quadrature encoder has 400 pulses/rev for each channel, 90 deg out of phase. This gives 1 count per edge, and direction.
  32. Thread: Encoder.h

    by Wozzy
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    1600 counts per revolution is correct when using...

    1600 counts per revolution is correct when using a true quadrature decoder with a 400 pulse two-phase Incremental Rotary Encoder.
  33. Replies
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    If it's just a short run and you know someone...

    If it's just a short run and you know someone with a 3D printer, you can print them out of NinjaFlex

    It's not silicone, but very strong and flexible TPU.
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    This should do it: ...

    This should do it: https://www.pjrc.com/teensy/schematic.html
  35. Replies
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    Sorry, I don't have experience with either the...

    Sorry,
    I don't have experience with either the example LowLatencyLoggerMPU6050 from SDfat, or the ADC Library.
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    Kammateo, While the T3.5 is 5V tolerant, the...

    Kammateo,

    While the T3.5 is 5V tolerant, the A/Ds only read to 3.3 V.

    Try changing the conversion line to:

    sensorValue = ((analogRead(A8)*3.3)/1023.0);

    Note that it will fix at 3.3V with ...
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    This is what you get if you place it on a flatbed...

    This is what you get if you place it on a flatbed scanner:

    FRONT: https://goo.gl/photos/sePEGseEpRnZzGKu7
    REAR: https://goo.gl/photos/Lnf5srENy2ddvuAC9

    Scanned at 24-Bit 6400 dpi - Epson...
  38. Thread: Teensy 3.3

    by Wozzy
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    jpoppe, Are you able to flash a program to the...

    jpoppe,

    Are you able to flash a program to the Teensy over wifi with it?
    As Frank B mentions the standard Teensy bootloader works over USB and not serial.
    If there was a way to do this it would...
  39. Thread: Teensy 3.3

    by Wozzy
    Replies
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    4,781

    Has anyone tried this with a Teensy?...

    Has anyone tried this with a Teensy?
    https://github.com/jeelabs/esp-link

    According to the Git Hub documentation:
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    It would be much better to share your solution to...

    It would be much better to share your solution to help someone solve a similar problem.
  41. Kubasmyk: I'm really happy its working so well...

    Kubasmyk:
    I'm really happy its working so well for you... Most of the credit goes to TLB for all the heavy lifting of his most excellent Hardware Quadrature Code.

    tni:
    I agree that my code is a...
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    Now that you mention it... I built several...

    Now that you mention it... I built several "prototype 0" boards based on PIC16F although it probably doesn't qualify, as it needed an external programmer.
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    I posted this on G+ some time ago. I can't verify...

    I posted this on G+ some time ago. I can't verify it's authenticity.

    ARDUINO PROTOTYPE # 0
    I stumbled across this in the Arduino Forums; from a 2008 post by Massimo Banzi.

    "For the ones who...
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    the Teensy 3.5 and 3.6 platforms are based on an...

    the Teensy 3.5 and 3.6 platforms are based on an new Microcontroller chips.
    Many people are testing and developing libraries to be compatible with them.
    See this link for more information: ...
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    http://www.pjrc.com/teensy/td_download.html

    http://www.pjrc.com/teensy/td_download.html
  46. Software Overflow handler

    kubasmyk,

    I'm working on an encoder routine for use as an HMI input device.
    It's still a work in progress.
    It reads the FTM1 overflow and direction bits, but uses a software handler for...
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    Look into either Processing or Python Matplotlib

    Look into either Processing or Python Matplotlib
  48. Replies
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    Yes.... ummmm.... well..... OK, you win! 1000+...

    Yes.... ummmm.... well..... OK, you win! 1000+ LEDs from one pin and any color you wish.
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    manitou, There. really nothing to measure in the...

    manitou,
    There. really nothing to measure in the transition from OUTPUT, LOW to INPUT or INPUT_PULLDOWN
    The original circuit backfed the pin through diode B.
    Here I have the scope probe hooked...
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    No, I'm measuring across the resistor and diodes...

    No, I'm measuring across the resistor and diodes in this circuit:
    The arrows indicate probe locations
    8413
    It was in this post that I originally noticed the glitch while observing the LEDs
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