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Teensy2 has INT6 on pin24, this sketch works for me:



#include <avr/sleep.h>

const int wakeup_pin = 24; // INT6 at PE6
const int led_pin =11;

elapsedMillis blink_stopwatch;

Yes, it helps me saving pins and code. I reset a DOGM204 display with it (through a voltage divider) and also Teensies 3.5/3.6 powered from DC-DC supplies. Without the MCP100s I couldn't get them...

Maybe a MCP100-315 or -475 could handle the reset independently from the teensy...

Jay, just to make sure: you want a teensy pin to drive the reset pin of your ADC: so it's not about resetting the teensy, right?

Many thanks, I will try to improve my code with your suggestions!

What does your code mean:

waveformMod1.frequency(freq * osc1_oct * transpose);
waveformMod2.frequency(freq * osc2_oct * detune);
waveformMod3.frequency(freq * osc3_oct);
How...

Many thanks, this helps a lot.

When mentioning that FFT was faster than Yin I used default value for AUDIO_GUITARTUNER_BLOCKS. Did you try if adding FFT helps to improve speed?

Ok, I am just interested in some detail such as how often do you read notefreqs result, do you adjust gain permanently for a steady level, does EQ the input help reducing wrong estimates, what...

Actual Debian with actual Arduino: usb audio out and analog in / i2c in both on T3.6 and T4 work well. I now get much cleaner signals! Thanks for the enhancements.

Thanks! Thats exactly one of the reasons I did this project: available tuners with notes and cents give the impression you are in tune even if you arent at all by lighting green etc., so if a...

Great project! Would you be willing to share your code?

For faster guessing of frequencies have a look at my project here:
https://forum.pjrc.com/threads/60796...th-FFT-and-Yin

With FFT my...

20046

Today I completed the wooden housing for the T3.6 tuner...

Sort of :-) Recently I pulled out the load cells and fitted better ones. There is always something to improve...

In my older posts you can see how I tried to write the pulse ramps by myself...

Apart from re-thinking the earth/gnd concept I found a solution to emi-protect pins, i.e. for reading buttons over long and noisy lines, see here.

Here some info about my main project: a music string winding machine.

It runs on 2 teensies, communicating via a serial line: a T3.5 controls the cockpit and handles display, buttons, calculations...

Here a tuner and frequency logger project I just completed.

The tuner uses yin algorithm from the teensy audio library, fft frequency estimation from here (had to edit cpu defines for T4), a...

I already tried to report on the beta3 thread, but my post disappeared: on T3.6 Audio ADC input does not compile (vtable error).

Thank you so much, I really appreciate it!

see here, it's available again since today: https://www.tindie.com/products/onehorse/ics43434-i2s-digital-microphone/

Fantastic, many thanks, thats good news!!! :)

Thanks for the hint! The pulldown can't be enabled by pinMode...?



Thanks! But I don't have space for an additional board...

see this post for further details

OK, I read all forum posts about the SPH0645 I could find and spend quite some hours on fiddling with it. The problem seems to be that SPH0645 violates i2s specs. At least in my case it spits out...

Hi Duff, in addition to what I stated in my above post I also can't get your code from this post to work with i2s/i2sQuad as input.

Hi,

it seems to me that something in the i2s part of the audio library is broken, here is my code:


#include <Audio.h>

AudioInputI2S input;
AudioAnalyzeNoteFrequency notefreq;...

Hi,

I want to use a single Adafruit SPH0645 mems mic board into the audio library on my Teensy 4 and managed to get it working, but only with i2s_quad with the following code:

...

On my machine I do the following:


#include "TeensyStep.h"

Stepper motor(48, 47);
StepControl controller(5, 1000);

int motor_steps_per_rev = 200;
int motor_microstepping = 4;

I will try to give some examples... Here my observations. The following works in master branch but not in dev-timer:
#include "TeensyStep.h"

Stepper motor(48, 47);
RotateControl controller(5,...

I Did some more tests and found that estop (in master branch) works only in one direction:


#include "TeensyStep.h"

Stepper motor(22, 41);
RotateControl RotCtrl(5, 1000);
StepControl...

Thanks a lot!! I think it's a good solution. I did some tests on my machine, everything works fine. Also the e-stop I can now execute faster without the delay!

EDIT: just noticed that slow...

Thanks for fixing! And sorry for so many requests...Yes, I think it's good to have. Some of my winding processes move really slow, for example when threading in the wires. With thin wires I could end...

At the moment I am using 2 rotate and 2 step controllers for my 5 motors and get along with them if used carefully - but if I add a new motor (say for a future grinding device) I will get in...

If you figured out a reliable solution: would you mind to post a code example and the values of the voltage devider?

Many thanks for your example! I played with it but couldn't do the following:
#include "TeensyStep.h"

Stepper a(22, 41);

void setup() {
RotateControl *rctrl_heap_1 = new RotateControl();
...

I would be interested in this as well!

Thanks for clarifying!



I see! Does this mean I also could delete a controller manually and define a new one within the scope, re-using the resources?

A new observation: moveAsync works only if stp.controller is defined in global space:


#include "TeensyStep.h"

Stepper motor1(22, 41);
Stepper motor2(43, 42);

void setup() {
StepControl...

I can confirm: it works. Thanks again for the great support!!!!

Thansk for fixing! But with the new version it seems I can't get callbacks working:


#include "TeensyStep.h"

Stepper motor(22, 41);
StepControl controller;

bool flag = 0;

Yes. I checked the master branch and it did only happen with the develop branch...



I just tried: it's fixed! Many thanks!! It helps a lot in my multi layer winding applications when spooling...

I want to share another observation: if I issue a stop command during deceleration the motor would speed up and begin a new deceleration ramp:


#include "TeensyStep.h"

Stepper motor(22, 41);...

You are almost there :)



Perfect, I added 2 minor details...

That could be the case any time sooner or later :cool: Thanks for letting me know!



Please feel free to ad it!

I managed to prepare a small video, see here: https://www.youtube.com/watch?v=SYRmfHMnmTE

I saw a difference with extremely slow speeds / acceleration rates, and you also mentioned the "ugly asymmetry". I thought that was gone with my suggestion...?



Thanks a lot, this is a very...

At fast winding speeds with thin wires (for example 0.12mm wires @ 3000~7000rpm) I get very slow acceleration rates for pitch changes. So what about this:


if (targetPitch > oldPitch) {
...

At least it needs to be changed for the next spindle speed change, so we could theoretically update it only before the spindle speed factor changes and keep all pitch changes with the old...

Wow, thank you, very convenient! I will play with this class and study it. One thing I noticed is that you call feeder.overrideAcceleration() now before feeder.overrideSpeed(): I am wondering if it...

Sorry to bother again with a code example, but I read so many times your explanations and still don't understand everything, so I put together another code example. What puzzles me is the difference...

I think you understood much better than me :cool:

(BTW in the library src the overrides are listed under "Blocking movements"...?)

Requirement #4 sounds good, but I am not sure because in any...