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Type: Posts; User: Gavin Bryars

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    You can find the latest version of the library...

    You can find the latest version of the library here :

    https://github.com/nox771/i2c_t3

    Once installed, open the basic_master example in the IDE under Examples->i2c_t2-master.

    It contains the...
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    Might want to take a look at this thread : ...

    Might want to take a look at this thread :

    https://forum.pjrc.com/threads/21680-New-I2C-library-for-Teensy3

    In particular it says :

    The Teensy 3.6 internal pullup is essentially a short, and...
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    I think SCL is pin 19 and SDA is pin 18. Is that...

    I think SCL is pin 19 and SDA is pin 18. Is that what you have?
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    Hey, Wittecactus, did you try powering the radio...

    Hey, Wittecactus, did you try powering the radio from the 3.3v on the Teensy? That's how it works here.
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    The naming is a bit confusing. The datasheet for...

    The naming is a bit confusing. The datasheet for the nRF24L01+ says :

    CSN is Chip Select : the N means NEGATE because it's active low. (page 11)

    CE is Chip Enable : high pulse activates...
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    Wow! This Radiohead library is really an...

    Wow! This Radiohead library is really an industrial grade tool. Maybe too powerful and complex for my needs, at this time. But it's nice to have in one's toolbox. Thanks Kurt.
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    The reason I didn't post my code is that it...

    The reason I didn't post my code is that it contains so much other stuff that you'll have a hard time sorting through the part that deals with the nRF24 itself. Also, the comments are in french (my...
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    Might be off-topic but... something to see!

    I've been working most of the day on a program to demonstrate filtering ADC values using the statistical mode. This is what I came up with :

    /*
    * Filtering noise from ADC by finding statistical...
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    Thanks mborgerson for the median algorithm. I...

    Thanks mborgerson for the median algorithm. I will sure have a use for that once I understand how it works. I was just browsing Wikipedia and saw something about the "mode" of a data set. This is the...
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    Hi Wittecactus, Well, some measure of success...

    Hi Wittecactus,

    Well, some measure of success at last! The code that works for me is transmitting from Arduino to Teensy 4.0. The same radio on each side means they transmit/receive the same...
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    Teensy 4.0 connections to nRF24L01+ transceiver

    Oops, the connection table came out wrong, let me retry.



    Teensy 4.0 Pin
    nRF24L01+ Pin


    Ground
    1. Gnd
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    Hi again, Thanks for posting all the info. I'm...

    Hi again,

    Thanks for posting all the info. I'm glad to help. Your message caught my eye because I'm working on a (kind of) robot myself. It's a very simple wheeled robot and I'm still working on...
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    Got the T4 and radio to work together, but it...

    Got the T4 and radio to work together, but it wasn't easy and I don't really know why your code does not work as is. Maybe subtle timing issues, since the Teensy is much faster than Arduino. I...
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    I'm setting up a Teensy 4.0 with nRF24L01+. I'll...

    I'm setting up a Teensy 4.0 with nRF24L01+. I'll try your code and see what happens and get back to you later today.
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    Several things to check : Dynamic payload...

    Several things to check :


    Dynamic payload is activated : radio.enableDynamicPayloads();
    Not sure about this but I think the payload size, sizeof() has to be the same at both ends;
    nRF24...
  16. Struggling with SGTL5000 Auto Volume settings

    Hi,

    I've been lurking around this forum and playing with Teensy for a while. Just never had time to participate. I'd like to thank all of you, especially Paul for your great work.

    For a while...
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