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  1. You should be able to get the signal to trigger...

    You should be able to get the signal to trigger an interrupt and count pulses

    https://www.arduino.cc/reference/en/language/functions/external-interrupts/attachinterrupt/

    use a rising or a...
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    wow - that's awesome - I might have to rethink a...

    wow - that's awesome - I might have to rethink a communication strategy !
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    Thank you WMXZ can USB2 be used as a serial...

    Thank you WMXZ

    can USB2 be used as a serial port ?
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    Hi Paul - i do not have my hands on a T4.0 yet ...

    Hi Paul - i do not have my hands on a T4.0 yet

    the backside appears to have the USB pads - did you decide to include them after all ?
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    Teensy 4.0 review :)

    An awesome review here

    https://hackaday.com/2019/08/07/new-teensy-4-0-blows-away-benchmarks-implements-self-recovery-returns-to-smaller-form/


    Well done Paul and your team, I cant wait to get...
  6. use FreqMeasureMulti works fine on T3.2

    use FreqMeasureMulti

    works fine on T3.2
  7. A really simple solution is to put the teensy on...

    A really simple solution is to put the teensy on a serial port and communicate that way, the teensy has many more ways of communicating other than i2c
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    https://arstechnica.com/science/2019/07/brains-sca...

    https://arstechnica.com/science/2019/07/brains-scale-better-than-cpus-so-intel-is-building-brains/?fbclid=IwAR2otux8jWFUrxOoXB2uIeCS3iZld42Wlx5qgKduJRWLF4peaHlSNRlz1Xs
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    Midi Keyboard ?

    is there an off the shelf midi keyboard that can be bought as the basis of a controller ?

    the keyboard is probably the hardest bit to build

    maybe easier to use an off the shelf controller and...
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    Off topic - Quantum computing

    this one is just a discussion about quantum computing

    from what i understand a quantum computer uses qubits instead of bits -- https://en.wikipedia.org/wiki/Quantum_computing

    can a modern...
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    is there a debugging option for normal arduino...

    is there a debugging option for normal arduino boards ?
  12. Windows is event driven and i have often wondered...

    Windows is event driven and i have often wondered if a microprocessor could operate this way

    my concern is a kernel/app will end up running to recreate a event driven environment but in fact it is...
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    my favourite steampunk invention ! ...

    my favourite steampunk invention !

    https://www.youtube.com/watch?v=2bPTqJtWpRc
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    Just record at normal speed and playback at the...

    Just record at normal speed and playback at the different speed !
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    How much does Eagle cost ?

    How much does Eagle cost ?
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    thanks for the suggestions guys :) might be a...

    thanks for the suggestions guys :)

    might be a nice feature to add pins to the Teensy 4.0
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    teensy 3.2 - using usb lead

    Is it possible to connect the teesny directly to a usb lead using tx1(pin1) and rx1(pin0)

    the Usb connector is a bit delicate and i would prefer a more robust solution

    does something need to be...
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    did you overwrite the original code on the teensy...

    did you overwrite the original code on the teensy ?

    PaulStoffregen is there a way to clone the rom so it can be reprogrammed at a later date ?

    does this device talk to your flight simulator...
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    does the existing board transmit data using...

    does the existing board transmit data using serial ?
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    Can freqcount be used to read the frequency of a...

    Can freqcount be used to read the frequency of a sound and convert it to a midi note ?
  21. You don't need to use can - connect the tx and rx...

    You don't need to use can - connect the tx and rx of the teensys together and use serial !

    easy peasy
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    Designing a pcb ?

    I have seen eagle from autodesk

    What else do you guys use ?
  23. protecting digital counting pins - 74HC4050 ?

    I want to use a shaft encoder that can output up to 12v square wave

    the 74HC4050 chip looks like it can be used to protect the pins and will take an overvoltage of 15v
    ...
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    Do you have a link to your tindie page ?

    Do you have a link to your tindie page ?
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    i would be happy to buy at $40 - much cheaper...

    i would be happy to buy at $40 - much cheaper than making them myself

    if you want to make some prototypes, I would be happy to commit to buying some

    I kind of see it like a ruggedTeesnsy shield
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    i reckon PJRC should sell a small screw sheild...

    i reckon PJRC should sell a small screw sheild adaptor that the Teensy plugs into that automatically protects the inputs and outputs - i would order one with every chip - there may be more profit in...
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    Measure over 3.3 v

    I will need a voltage divider to reduce the voltage of an input signal ie 12v

    Is there a chip / breakout board suited to this task

    Is there an easy way to allow the resistor to be adjusted for...
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    the problem was fixed by setting ...

    the problem was fixed by setting

    Serial.setTimeout(0);


    :)
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    FreqCount on multiple pins ? T3.2

    I see that freqCount uses Pin 13

    is it possible to use FreqCout on more than one pin at the same time ?

    Ideally 5 channels

    Is interrupts my best option (the frequency is typically under...
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    Hi Paul, yes I am looking to raise the voltage of...

    Hi Paul, yes I am looking to raise the voltage of a pwm output so i can drive another device.

    Can you recommend a circuit or a transistor that will perform.
  31. Me too ! I can move forwards now :)

    Me too ! I can move forwards now :)
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    Hi Paul A logic level convertor should to the...

    Hi Paul

    A logic level convertor should to the trick. Can they jump 3.3v up to 5v as well as 5v down to 3.3v
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    T3.2 output 5v ?

    The 3.2 is 5v tolerant

    Is it possible to get the pwm channels to output 5v instead of 3.3v
  34. Setting Serial.setTimeout(0) seems to have got...

    Setting Serial.setTimeout(0) seems to have got rid of the delays in the pwm timer
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    ok disabling interrupts did not work i then...

    ok disabling interrupts did not work
    i then tried ending serial and starting it again after the analogue reads - again no change

    in the setup i set Serial.setTimeout(0); was set to 1

    this...
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    thank you for the advice - i will try disabling...

    thank you for the advice - i will try disabling interrupts first :)
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    PaulStoffregen - what do you think is going wrong...

    PaulStoffregen - what do you think is going wrong here ?

    are the Serial interrupts interfering with the pwm timers ?
  38. "2. Will the interrupts for the serial...

    "2. Will the interrupts for the serial communication interfere with the PWM timers for the motor driver? In other words, when receiving data will the PWM waveform be effected or will it hold it's...
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    original post is here --...

    original post is here -- https://forum.pjrc.com/threads/56198-analogWriteResolution

    basically :-
    the pc sends data to a Teensy 3.2
    there are issues trying to process the data cleanly and getting...
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    update - i tried the Nano sending data with a 5ms...

    update - i tried the Nano sending data with a 5ms delay and the Teesny goes through periods of stuttering and then stuttering after a while it seems ok, then it struggles again (at 10ms delay there...
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    for some reason I don't seem able to get 2...

    for some reason I don't seem able to get 2 Teensys to talk to each other like the Nano / Teensy did earlier :(

    but either way i think this experiment shows the problem is in the Teensy not the...
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    Ok - i made some progress today with getting to...

    Ok - i made some progress today with getting to the bottom of the problem

    i wrote some code to an arduino nano - to replace the windows app and talk to the serial port directly




    int PWMVal...
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    this board is quite neat and uses a plug in...

    this board is quite neat and uses a plug in teensy

    http://www.plantation-productions.com/Electronics/Weensy/Weensy.html
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    i programmed this sketch // // Teensy...

    i programmed this sketch


    //
    // Teensy 3.x/LC simple internal temperature
    //

    #include <InternalTemperature.h>

    InternalTemperature Temperature;
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    the files got corrupted with xml information when...

    the files got corrupted with xml information when i downloaded them !

    all sorted
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    5v tolerant ?

    I see the Teensy 3.5 is 5v tolerant but the 3.6 is not

    what is the difference - is it the way the board is built or the actual chip itself ?
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    you need to deisign a board using a bare chip -...

    you need to deisign a board using a bare chip - or make a board that has 2x carriers so you can plug the Teensy 3.6 straight in - a bit like a motherboard / daughterboard
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    I cant seem to get this library to compile :S ...

    I cant seem to get this library to compile :S

    Archiving built core (caching) in:...
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    this is a great solution for the Teensy - it is...

    this is a great solution for the Teensy - it is designed for the nano and has an extra set of pins - but a very simple solution
    ...
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    wow internal temp sensor - thats awesome ! i...

    wow internal temp sensor - thats awesome !

    i will load a sketch and see what temp we are talking about
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