houtson
Member

Hi, you might want to check out https://codeberg.org/dcoredump/TeensyMIDIAudio from user @C0d3man for a few ideas

Hi lokki Good you got a fix. I'm no expert but looks like there is an influence from the oscilloscope impedance and your long cables as you've found with the cap but I can't say that I understand that. I had a...

that's quite a lot of reads a second - could you try 2 millis and see if that helps?

@lokki, have you tried slowing your loop down? I use keypad on a mac with a mag cable and on battery with no issues

@alrj can you post some sample code that reproduces your problem, it makes it a lot easier to help that way, cheer Paul

@blackaddr I've been looking at your schematic, which has been really helpful thanks for sharing it. I know your board is focussed towards guitars and has significant attention to that with the preamp. I'm only...

Tops, thanks

@blackaddr thanks for that, I'll look into WM8731, I can deal with TSOP so looks promising Your board looks great. cheers, Paul

As far as I know, the 1.8V supply is for VDDD, text below from the Datasheet, the max for VDDD is 2.0V- The SGTL5000 requires 2 external power supplies: VDDA and VDDIO. An optional third external power supply VDDD...

thanks @boxxofrobots, not sure inside of a 70's stereo was the look I was going for but thanks for the link to Jessa ;) doesn't look like many alternative options so will have a look into heat gun etc. and give that...

Hi, You need the Rev D for 4.1 ( from here TEENSY4_AUDIO Audio board for use with Teensy 4.0 - 4.1, (Rev D)) There are other changes in pins between 3.6 and 4.1 so you might have to look at other impacts to...

I'm fairly sure the neopixels are ws2811s (rather than ws2812s) The OctoWS2811.h lib is another of Paul's non-blocking libs that you can use with FastLED as in #5

try #include <OctoWS2811.h> #define USE_OCTOWS2811 #include <FastLED.h> in that order

Hi, That's good lineOutLevel helps a bit. Couple of additional thoughts: Here is the text from the design tool on volume, might not affect you as i think you are using line out only (if so do muteHeadphone() just...

beautiful looking custom keyboard and excellent writeup of the process p.s. love T800 arm also :)

@touting, couple of thoughts - do you have any flashy lens (neopixel or ws2812s or anything like that?) - are you setting the audio board with any other functions? - are you using line out or the headphone amplifier...

Your synth looks great, nice work. On your noise question have a look at this. Simply disabling the high pass filter on the audio board seems to help a lot (adcHighPassFilterDisable()) cheers Paul

I made a (very) rough and ready AudioBoard using FreeCAD (for the first time!). Zip file with the FreeCAD model plus a .wrl that you can use direct in KiCAD A picture of it sitting on top of a T3.6 If I...

for me there is clickable attachment at #7 with a zip file with the filter_biquad_f.h, filter_biquad_f.ino and a test sketch - are you looking at it on a phone?

I came across this paper "Non-Linear Digital Implementation of the Moog Ladder Filter" (Proceedings of DaFX04, University of Napoli) by Antti Huovilainen and found an implementation for Reason JSFX here that I...

It's a floating point (rather than integer) version of the biquad filter - see post #7

Thanks for these, I'd love a good Moog like LP filter and I had a play about with the sketch. I added a pot for cut-off freq and res and a couple of extra waveforms to thicken the sound for auditioning. I noticed...

I agree but I still want more that 24 steps per turn :)

The problem I've had with encoders for audio effects/applications is the lack of resolution with a single turn - with 24 pulses per revolution you need to turn the knob 10 times to get 8 even bit resolution (256 steps)....

hi @xtreemechill I'm no expert but a few points just from my experience with pots and audio effects: - are you using the audioboard as part of your design, if so remember that will take out a few analogue pins -...

have you had a look at https://www.pjrc.com/teensy/td_libs_AudioNewObjects.html

Hi, if you upload the code you are using I'll test it on a similar setup cheers, Paul

Hi Have a look at @a_guy_called_tom's Polaron DIY Drum Machine - https://github.com/zueblin/Polaron He has created a custom Envelope using an exponential look up table, have a look at the files:...

Hi, I wired up a Teensy 3.2 with the DAC and the first two examples above work fine. The last one (#5) doesn't work because you've got two connections to the dac (which only has one port) so all you hear is the...

@nubie I tried your code with a Teensy 3.6 with the Audioboard. I changed the dac for an i2s output and it works fine (sounds good!). I don't have the dac set up for audio out so can't test that, can you post a...

Try increasing AudioMemory() delay uses lots of memory. From the GUI: Memory for the delayed signal is take from the memory pool allocated by AudioMemory(). Each block allows about 2.9 milliseconds of delay, so...

@iankravets being using PlatformIO for a while now, just want to say thanks, can't believe I struggled with that Arduino IDE for all that time!