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Type: Posts; User: RichardL

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    Hi, First, sorry for not replying to those who...

    Hi,
    First, sorry for not replying to those who have kindly looked into the FreqCount() problem; things have been a bit hectic.


    I downloaded the library that mjs513 posted and it solves the...
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    @Paul I still find that FreqCount() fails to...

    @Paul
    I still find that FreqCount() fails to show a correct value when the interval between readings is longer than the gate period. It looks to me like a reset or a latching failure or something...
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    @MarkT, @BriComp, @FrankB Thanks for your...

    @MarkT, @BriComp, @FrankB
    Thanks for your comments relating to roll over / wrap around in MyDelay(), certainly something that needs to be taken account of in a developed program but not really...
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    @Paul Thank you for replying to my query. My...

    @Paul
    Thank you for replying to my query.

    My system consists of :
    Teensy 4.1 plus custom PC board and touchscreen.
    Windows 10 PC
    Recently installed Arduino 1.8.15 and Teensyduino...
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    @Paul I do hope FrequencyCount is going to...

    @Paul
    I do hope FrequencyCount is going to reappear in the examples, preferably with the timing constraints eliminated! Please.
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    Hi Paul, I think FreqCount() is flawed. The...

    Hi Paul,
    I think FreqCount() is flawed. The gating period appears to not be set by the call to FreqCount.begin(NuSec).
    Or am I being stupid (as usual)?

    T4.1 on custom PCB with very good signal...
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    Hi Dale,​ I'm using a T4.1 in a frequency...

    Hi Dale,​
    I'm using a T4.1 in a frequency meter application and with decent front end signal conditioning can achieve 70MHz. In my application I use a LTC6752 comparator that is good for 280...
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    Beta6 installed over Beta 5 with no problems on...

    Beta6 installed over Beta 5 with no problems on my Windows 10 x64.


    Probablytoo late in the day, but as a T4.1 user my wish list would be:




    Could FreqCount() have a way to clear the...
  9. Teensy 4.1 ~ Frequency measurement and SD issues

    HiPaul,
    Thanks for the Teensy series of boards, I've had lots of success incorporating them into various projects. About a year ago I started an ambitious data capture project with a Teensy 3.2,...
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    Hi, I have a data capture project nearing...

    Hi,
    I have a data capture project nearing completion, it started with a Teensy 3.2 and migrated to the Teensy 4. The software, hardware and PCB designs (now on Rev 3) have kept me busy for most of a...
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    Hi, Further observations on FreqCount()...

    Hi,
    Further observations on FreqCount() performance
    ===============================
    This code does not exhibit the same feature (bug?) as my previous example and will accept gate times as short as...
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    Hi, I needed two ADCs to measure some sensor...

    Hi,
    I needed two ADCs to measure some sensor outputs in a Teensy3.2 based project. Although I made it work I was always fighting noise and drift. When the Teensy4 came along the speed increase was...
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    FreqCount() not working as I expected

    Hi,
    I'm using a Teensy 4 and 'FreqCount' to measure frequencies in the range 1KHz to 60MHz (Higher would be good!).
    The user is able to select the gate time in the range 1mSec to 10Seconds, trading...
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    Hi, I'm building a digital frequency meter into...

    Hi,
    I'm building a digital frequency meter into a major project and using FreqCount().
    I've progressed as far as reading a frequency OK, but need to make a correction to take account of the...
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