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  1. Replies
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    Team Monsoon, not only the "famous" battlebot but...

    Team Monsoon, not only the "famous" battlebot but also "drizzle" antweight you wouldn't want to mess with.
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    No help here, but your name reminds me of a...

    No help here, but your name reminds me of a certain combat robot team from the UK. "get in your house!"
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    there are a few ways to do it, depending on how...

    there are a few ways to do it, depending on how accurate you want, how much memory you have, and how fast you need it to be.

    you can use "POW" function, which is quite slow but the most accurate,...
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    Is there more information about "Use standard...

    Is there more information about "Use standard (not low power) ADC mode"
    is it just teensy 4.x that is affected? or will it change performance of 3.x ADC as well?
  5. I think most of that “off time” is doing the...

    I think most of that “off time” is doing the compare and loop increment, What if you count the loop down to zero? “compare to 16384” probably takes more cycles than “loop if non zero” then you might...
  6. The o&c has the DAC and display on the same SPI...

    The o&c has the DAC and display on the same SPI bus, It makes the timing tricky. if you want audio rate out the display might have to do nothing while it is playing.
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    I don't know much about how this works, but there...

    I don't know much about how this works, but there is

    http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0489d/BABJFFGJ.html

    there are comparators,

    could you set one to...
  8. Different behaviour with 2 teensy 3.6 > DAC 8562

    I have 2 boards which are the same, both use a teensy 3.6 and DAC8562. On one of them the DAC would not start. the Sync(CS), Clock, and Data signals to the DAC looked the same on a scope, but the non...
  9. have you got a MIDI monitor software? you could...

    have you got a MIDI monitor software? you could check to see if the buttons are bouncing like crazy and sending enough MIDI data to interfere with Mainstage?
  10. Hmm, i think this must be it then? ...

    Hmm, i think this must be it then?

    HFW8R-1STE1H1LF
  11. That is the cable itself, this is for the...

    That is the cable itself, this is for the connector.
  12. FFC 8 pin, HFW8R-1STE1LF (teensy 4 bottom SD connector) obsolete.

    Can I use this one instead? the data sheet does not have a footprint.

    https://www.mouser.ca/ProductDetail/Amphenol-FCI/HFW8S-2STAE1LF?qs=sGAEpiMZZMs7i6cT6ogu4%252BM5B8TmbFcyy4tps6v3cqo%3D
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    Thanks! I ended up adapting the code at the...

    Thanks! I ended up adapting the code at the bottom of this page https://www.best-microcontroller-projects.com/rotary-encoder.html one of my encoders was still not so great, but a short delay...
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    Encoder library with cheap encoders.

    I have had trouble with encoders skipping counts and sometimes even stepping in the opposite direction.
    I am using a teensy 3.6 with the encoder library 1.4.1

    the sketch is the example on the...
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    I just noticed the updated back side graphic, i...

    I just noticed the updated back side graphic, i guess there is no more external AREF? is there a way to get the same sort of performance from the ADCs with potentiometers across a 3 or 3.3v supply?
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    I just ordered 4, i have been looking forward to...

    I just ordered 4, i have been looking forward to this! quick question, the teensy 4 page shows the top side pins in both pictures instead of the usual top and bottom, I just want to confirm that the...
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    The audio shield goes on top of the teensy.

    The audio shield goes on top of the teensy.
  18. Replies
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    Thank you, i tested the timing on the "almost...

    Thank you, i tested the timing on the "almost working" verion (which outputs half a sine) and it did not run any faster, it was worth a try though!
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    On a wild guess i removed the "bx lr" at the end...

    On a wild guess i removed the "bx lr" at the end and now it "works" but not properly.
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    thank you, now it compiles but unfortunately now...

    thank you, now it compiles but unfortunately now the teensy stops when the function is called.


    static inline int32_t iSIN3(int32_t x)
    {
    int32_t out;
    asm volatile (
    "mov %0, %0,...
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    trying to port some assembly.

    I have been working on this thing: there is a teensy 3.6 and some multiplexers and output op amps on the back, not much else except power and supervisor.
    11512


    One thing it does, is generate...
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    here is a "hack" where you can add a MIC803 under...

    here is a "hack" where you can add a MIC803 under the teensy.
    10864
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    ok thanks, its such a minor thing, its not worth...

    ok thanks, its such a minor thing, its not worth wasting too much time on compared to your actual work.
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    I have just installed a MIC803 (2.63 threshold...

    I have just installed a MIC803 (2.63 threshold and >1 second delay but im pretty sure the faster 140ms or 20ms ones will work)
    I have a eurorack module with t3.6 which gets used with various...
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    Make teensyduino window easier to move.

    Hopefully a simple change for a future version of teensyduino!

    this might be sort of dumb, but:
    I have my windows set to a larger font size due to aging eyes and a high resolution monitor, there...
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    what startup behavior do you want to see, the...

    what startup behavior do you want to see, the 3.3v teensy voltage and?
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    please keep us posted how well that chip works, i...

    please keep us posted how well that chip works, i have trouble with a project sometimes not starting as well, and that looks like a nice solution, if you can still program with it.
  28. Thanks, I will leave it as is for now then.

    Thanks, I will leave it as is for now then.
  29. Help converting arm assembler for teensy 3.6

    I have been using this sine approximation by Jasper Vijn as a function, which works well. http://www.coranac.com/2009/07/sines/


    //fast sine approximation by Jasper Vijn
    /// A sine approximation...
  30. Thread: K66 Beta Test

    by neutron7
    Replies
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    wouldn't the single precision float be able to...

    wouldn't the single precision float be able to speed up emulation of double?
  31. Thread: K66 Beta Test

    by neutron7
    Replies
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    560,367

    Just in case anyone is interested, I ran a...

    Just in case anyone is interested,
    I ran a benchmark i found with teensy 3.2 and 3.6 both at 120mhz, to get a sort of "apples to apples" comparison.



    F_CPU = 120000000 Hz teensy 3.2 teensy...
  32. i fixed it (on the sample variables which are...

    i fixed it (on the sample variables which are accessed from the ISRs) it has not made any difference though.
  33. Trying to read i2s directly from SGTL5000

    I am trying to do some "sample by sample" audio effects without using any DMA or buffers.
    I based this on a drum machine by "kbob" which only has outputs, and the output part is working on my...
  34. The code for this is handy if you want to see how...

    The code for this is handy if you want to see how to add your own effect in the audio library, thanks!
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    flanger not modulating.

    I tried the flanger example sketch, and it plays the original signal, as well as a delayed signal as i would expect, but there is no modulation of the delay time with the built in sine oscillator....
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    it is usually run at 120mhz, i have not really...

    it is usually run at 120mhz, i have not really got any loops in the ISRs, they just run through everything once each go, but i measured the speed of the main loop with and without FASTRUN, on the...
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    Is FASTRUN broken in arduino 1.6.7

    I have a project with some ISRs that use FASTRUN.

    it is here on github.

    https://github.com/jakplugg/neutron-sound/tree/master/orgone_accumulator/official_firmware/orgone_accumulator_2RC1

    in...
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    I don't think it is leakage because each input...

    I don't think it is leakage because each input has an attenuator, and if i change the others to zero it makes no difference.

    i just got the tiny pin probe on my scope, to touch pins on the actual...
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    Is this a defective ADC?

    I have been trying to fix an "orgone accumulator" synthesizer module which is based on a teensy 3.1

    normally i can swap out the teensy to be sure it is OK, but this person decided to solder pins...
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    That is good to hear, thanks for the reply!

    That is good to hear, thanks for the reply!
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    Is "low memory" really a problem?

    Sketch uses 129,232 bytes (49%) of program storage space. Maximum is 262,144 bytes.

    Global variables use 56,336 bytes (85%) of dynamic memory, leaving 9,200 bytes for local variables. Maximum is...
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    it turns out that its either an MK20 defect or a...

    it turns out that its either an MK20 defect or a build error. its a 4 layer board so something could be going on inside. anyways its not any error on the part of PJRC because the second identical...
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    pin 32 problem with custom teensy 3.1

    I have a custom teensy 3.1 with a strange problem.

    the MK20 is on one board and the MINI54 from PJRC is on a little "programmer" board connected by a 2x6 header. programming. serial communication...
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    Long delay before teensy loader uploads.

    Sorry if this is a common question, Someone posted a fix for this somewhere but now i can not find it!

    after using a few different USB devices and teensys, it takes a long time for the teensy to...
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    I found an easy fix. with Bounce1 you CAN...

    I found an easy fix. with Bounce1 you CAN reassign the pin number after creating the bounce.

    create the bounce as normal before setup


    Bounce FXCycleButton = Bounce(FXButton, 20);

    then...
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    Bounce2 works, but downloading and installing the...

    Bounce2 works, but downloading and installing the library is a problem for some people.
    i did not realize it was just counting millis though(i thought it was using interrupts), i will just add my...
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    yes that is the one. my sourcecode is very...

    yes that is the one.

    my sourcecode is very huge to post here, but i initialize a button with a variable called "FXButton" which was set to the pin (3) that is used in the first hardware version.
    ...
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    IS bounce 2 compatible with teensy 3.1?

    I would like to use bounce 2 in my project because there are 2 versions (of my project)

    the setup checks for a pin being low and then changes the mapping of the switches to pins accordingly....
  49. EEPROM.h stopped working between 1.2 and 1.23

    the code is rather huge to post, so here is a link

    https://github.com/jakplugg/neutron-sound

    the version with the problem is here
    ...
  50. Thread: Multi I/O SPI

    by neutron7
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    Multi I/O SPI

    I am looking for a multi channel ADC to use for a project, and a some of the likely candidates have more than one SPI output, Does anyone know if there is there a way to read data on 2 inputs "at...
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