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That is the data sheet I had found as well, which fixed a lot of my issues I initially had with the switch.

By the way, I don't see other than Serial options in the USB type menu for T4 (for T3.6 there are all kinds of options).

@KurtE Dug out a pot and hooked into the T3.6 and then ran you updated DMA example. Bottom line up front it works great. Also works no problem with compare. Haven't tried playing with other settings yet. Getting...

I just got the kit from Loglow/talldog. Thanks. I suspect I may need to wait until the detailed instructions are done. I was playing around with the PCB, and I dropped the coin cell battery holder. It took me...

I was slightly confused when the teensy didn't show up as a usb serial device and the Serial.print() still worked. It all makes sense now. Thanks for the clarification.

I think OP has all that sorted and wants to know how to animate the needle and draw a background image to the display... (I can't help with this) I did find this...

The culprit? Lower the clearance value in the Copper Zone Properties. Nothing that can't be fixed with a piece of wire and some solder fumes. Don't know if it is intentional or not but pin13-PTC5(led) is not...

Thank you defragster. Didn't think of inserting the hyphen when searching for nonBlocking. PEBKAC error! While I was in there, scrolled down the page and found the solution to the basis of another series of dirty...

That is by design, but it’s not Serial being that it won’t work with normal serial monitors since it’s a special HID serial emulation designed for the Teensy monitor. All previous Teensy devices have had the same...

I am assuming the gauges work using a voltage from a sensor you need to output the voltage from your T3.2 to drive them https://www.arduino.cc/reference/en/language/functions/analog-io/analogwrite/ you need...

Follow up: USB Type: "MIDI" seems to act like "Serial + MIDI" since Serial.print() still shows up in serial monitor.

Thanks for the suggestions. Here's a link to the library used for the MK66, I went through the data sheet to check the pins against this and couldn't see any mistakes. I think I'll make a revision to the pcb to move the...

Quick update: I updated the above sketch not to use the DestinationCircular and interrupt on half way to instead be a setup of two different buffers, each pointed to by a dmaSetting object and then one dmaChannel...

Thanks wcalvert and neurofun! I think I get it now. And yes wcalvert myI'm using knob1(a16) for the first 16 waveforms and knob2(a17) for the last 16. Thanks again man, you are a lifesaver! I don't know why I...

Just put the code for changing the oscillator waveform in loop(), just as you did for the filter frequency.

All of the waveform definition and selection stuff needs to be moved out of the NoteOn function. The idea is you want to read your pots inside loop(), and if the selected waveform has changed, apply the change to the...

Also, the MKL04 doesn't have a decoupling capacitor anywhere close.

After installing MacOS-X 10.8 to 10.14 over the MacOS Catalina 10.15 app I can confirm the same bug with "Serial + MIDI", but after compiling with normal "MIDI" it seems to work as expected while doing a simple loopback...

After some research it seems pointers may be way the way to do this but I am pretty confused on how to implement them.

MacOS 10.13.6 USB Type: "MIDI" Works in both directions, IN/OUT. USB Type: "Serial + MIDI" Does not compile./Applications/Arduino.app/Contents/Java/hardware/teensy/avr/cores/teensy4/usb_desc.c:683:13: error:...

I downloaded the beta, installed it on Catalina. Works like a charm (and solves a problem I had with Serial.available() ). I have a Mac with the touch bar, although I am not using it much with Arduino. Everything I...

Hey everyone. Here is the new version of my synth code. I am having some problems figuring out how to pass current potentiometer values to the onNoteOn() function. My solution to change the waveform types was to put the...

FYI: Teensyduino 1.49 beta 1 fixes the issue. Thanks!

An external ADC could be more flexible about voltage, higher resolution, faster and/or quieter.

Teensy Loader does say beta 2, but nothing has been changed in the cores folder like it should be.

Well the Arduino window says beta 1, but launches beta 2. Don't see anything but serial for T4 USB Type. Installed no other problems on Catalina. I had previously deleted beta1 and cleared all the Arduino...

@mjs513... Yep coming along. I am doing a little playing with DMA. So far not updating any of the ADCL class. But here is the start of an example that is continuously doing DMA read operations, and I have it...

oops, redundant

You can choose your ADC_REFERENCE to be REF_3V3(default), REF_1V2 or REF_EXT. Gain formula for inverting opamp is Gain = Rfeedback/Rin = Vout/Vin Gain Vin = 1.2V(Vout range)/10V(Vin range) = 0.12 R1 =...

Windows 10 Pro 1909 x64 build 18363.476 Trying to run example "Teensy USB_MIDI Buttons" CPU Speed: "600MHz" (default) Optimize: "Faster" (default) USB Type: "MIDI" Windows builtin MIDI driver: Device driver...

The Catalina one is still using Teensyduino 1.49 beta 1.

attached T4 previously flashed with "Keyboard Simple" sketch to windows 10 notebook computer. It rebooted, and failed to acknowledge the built in keyboard. Another reboot corrected this. A second attempt to...

Thank you ! I will test at once !!

Installed on linux mint 19.2 Tina, XFCE desktop, Arduino 1.8.10 USB Midi example " InputRead " works as expected. USB Keyboard example "Simple"... "all hell" breaks loose. Random applications launched, ' Start...

Thanks Neurofun, it seems that the more I research about this teensy/CV-thing the more complicated it gets... Before Paul mentioned it in his reply I was not aware that the analog inputs only accepts max 1.2V. I...

FlexCAN_T4 works on Teensy 3.2, 3.5, 3.6, and 4.0 You can also use IFCT for Teensy 3.x

As far as I know, teensy analog inputs have ESD diodes to Vdd and Vss that make them +/- 12V safe if they have enough series resistance. Even more so at lower voltages (as Paul's circuit does). The MCP6001 has some...

As Wibbing mentioned you need to use a rail to rail opamp supplied with 3.3V otherwise you might damage your teensy. Since eurorack modules are usually powered by -12V, 12V, all inputs should be able to handle those...

Downloaded and installed TD 1.49b2 for some reason this time it gave this on first run - I did not pick "Run": Looked at properties and it offered 'UNBLOCK', I did not check that and re-ran the download and it...

Makes sense! Thanks for the update anyway. Please keep us posted once you have the update for USB > Audio!

Yes, but later. Audio requires isochronous transfer, which is more complex and more difficult to test. We use it in asynchronous mode, which uses a slightly different rate feedback protocol at 12 vs 480 Mbit speed,...

Thanks Paul for the update. I installed and it shows all the USB types except AUDIO. Are you going to add Audio too? What I want to do is send stereo audio through line in and pass it through USB as audio. I could do...

You do have some other traces running under your crystal trace. How important is it that USB lines be the same length (or maybe they are)? I believe in decoupling capacitors as tight as possible, each one with its...

I tend to dance around peoples answers. I will break my response down directly Yes on daisy chain. Keep in mind there are limitations! The limitations are Frames perscond / how many pixels are in that string. ...

I'd love to see your design and improvements whenever you can share them!

You can see the design here: https://github.com/blackketter/teensy4_esp32_breakout It uses teensy digital pins 24, 25, 26, & 28 for a serial connection and reset for serial programming.

Morning again. Anyway, ran the Simple USB Keyboard Example, simple.ino, under keyboard examples. Nothing else was hooked up to the T4. Was using a the Ultimate T4 breakout board I got off Tindie. Reason - it was...

Heres a link to a Kicad project if you have chance to glance over that at all. I can't see anything obvious in the layout. https://www.dropbox.com/s/j8ysvsdnlyal5b7/Kicad%20Files.zip?dl=0

Im based in Denmark, but if the Gerber files are free I can order some for a few US$. There is many threads comming up when seraching for OTA, one which you started, where the klink ind the first msg is broaken.

Hi jonr, have been reading this, but your link in the fist msg is broaken: >>See the flasher.* code here: https://github.com/Photosynq/Photosy...ter/multispeq1 If the code is free do you then have a valid link ?

I'll confess... I tested the new USB stuff mostly with Linux and a quick check on Mac, but not Windows. I use Linux as my primary system, and the Macbook Air was set up due to the recent work on MacOS Catalina support....

Schematic looks like it ought to work. Maybe something wrong in the layout? Here's a project where the schematic was perfect, but the problem turned out to be a missing trace in the layout. It can happen.... ...

Would be great to see the ESP32 as a common, easy, well integrated teensy peripheral. I have a derivative of blackketter's teensy/ESP32-module board coming soon. If you are in the US, I'll send you one for alpha...

I'd post all of the related files (now and then again when it's working - to help others). Nothing obvious to me. Use a known good, simple as possible program (eg, blinks LED). Make sure D+/D- didn't get reversed.

For CV into an analog pin https://www.pjrc.com/control-voltage-to-1-2v-analog-input-pin/

RetroD, I simulated the second circuit you posted and it worked like a charm. Regarding Teensy->DAC->Opamp, I found a circuit from...

Okay so this is what I have so far: Vdd connected to 3.3V, ground connected to GND pin next to MIC pin, and output connected to MIC pin with 10uF capacitor (not 25uF I was mistaken). The code I'm using is the...

Oh that doesn't sound right. I'm pretty sure you need to connect VDD (pin 5) of the ICS40300 to 3.3V on the Teensy.

Thanks Paul, will check this against Ableton / Reaper / Cubase on windows - and custom stuff on Linux. j.

you most probably have wrong connections, because the mic has separate output and Vdd pads!! Have a look at the data sheet page 6. I am afraid nobody can be of more help unless you post pictures of your exact...

Then it will be fine, thanks GremlinWrangler!

Per the 250mA max note on the reference card 100mA for the SD card is not a problem unless you are also powering other things that eat into that capacity. Be aware that the standard SD card library working in SPI mode...

@Paul Downloaded and installed Beta2 with no issues whatsoever. Did see all the new USB stuff in the IDE dropdowns. Out of curiosity I tried to run the keyboard simple example but my PC is having issues with...

Hi GremlinWrangler! I think it will be 400 KB/m writing rate(using Class 10 Ultra SDHC) data logging, is it better to have Voltage regulator from 5V to 3V3 or the T4 can deliver 100 mA to the micro SD card?

Teensyduino 1.49-beta2 is now available, with USB MIDI support for Teensy 4.0. https://forum.pjrc.com/threads/58654-Teensyduino-1-49-Beta-2 Please give this a try and let me know how the USB MIDI works for you? ...

Thanks not a problem should have mentioned it sooner. That's what I get for taking a nap. :)

Sorry, too late for 1.49-beta2. I'm uploading it right now.

@PaulStoffregen PR has already been issued for the updated ST7735_t3 lib. Do you think you can get the PR incorporated for Wire library in the 1.49-beta2 release or is it too late?

re: post #27 above { fail at 24 and 150 MHz } - it may be a clock setting issue : pjrc.com/threads/58567-Teensyduino-1-49-Beta-1 Resolved perhaps in TD 1.49 by release.

Follow up to post #27. There is a problem at 24 MHz startup speed switching from power up reset speed - this may explain failed SDIO on SDFat Beta code? EDIT UPDATE: Building at 150 MHz start with millis() running...

Indeed it is likely a rare not 'generally' easy to hit problem - and easy to work around. In doing the work on MICROS() using the millis() + CycleCounter timing I never triggered it. If the clock drops/raises in steps...

Hi Paul. Should be attached now, hopefully this is clearer. Thanks.

Can't read the schematic. Maybe a PDF would be better?

I've added this to my list of issues to investigate. Not going to hold up 1.49-beta2 for this.

Yes. Please send a pull request. Will probably be in 1.49-beta3, since I'm about to package up beta2...

Yes, most SD cards run on 3.3V so that would be the expected wiring method. One thing to watch for is that writing flash memory is quite power hungry, possibly up to 100mA so if you are doing high rate writes factor...

Ordered PCB: KiCAD project is available on GitHub

Hi, I've ran that tutorial as suggested and all I hear is noise which doesn't change if I make loud sounds (clapping etc.). Sorry I'm not able to provide pictures right now but I have a cap on the output line,...

I think that part is https://www.digikey.com/products/en?keywords=H126097CT-ND and https://www.mouser.com/ProductDetail/Hirose-Connector/DM3D-SF41?qs=%2Fha2pyFadugJhiiWzySXEZUVzYcQ5VTvMqeB9Kjr7fD7we5j9ikO2w%3D%3D

Hi, I am new to Teensy and have some questions regarding CANBUS on Teensy 3.5 and 3.6. As I understand it there are at least these 3 libraries: https://github.com/teachop/FlexCAN_Library (Teensy 3.1) NOT 3.6....

Paul - this millis() issues on certain set_arm_clock transitions. See: pjrc.com/threads/58053-T4-set_arm_clock-and-micros() Title says micros() but that is because it tracks on millis() clocking.

Paul - TeensyDuino 1.49 fixable? Certain passes through set_arm_clock() with clock speed transition depending on current settings leave the clocking for millis() not properly set. Post #2 the code in code block #2...

Thx for your input. My first plan was to be abel to do OTA upgrade for both esp32 and Teensy 4.0, when working with the esp32 I like it can be upgraded without unplugging it and connect to a pc first, but it seems...

Pipe Monster v4 digital theremin antenna and sensors mounting. Made of 20mm and 32mm PPL pipes and fittings. Antenna sizes and distance between antennas - like in Etherwave. 32mm pipe pieces (coil + sensor PCB)...