TomChiron
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    • TomChiron
      TomChiron replied to the thread Teensy 4.1 USB Host cable.
      Doesn't hurt to get the right cable, yes. But where do you see that the 4pin connector is missing the 5V pin? There are two GND pins in the 5 pin connector where you can omitt one. The 4pin connector should also work.
    • TomChiron
      TomChiron replied to the thread Newbie: OLED/TFT display?.
      You can use a breadboard and a few jumper wires to connect the Teensy with your display and anything else you want to try out next. https://learn.sparkfun.com/tutorials/how-to-use-a-breadboard/all
    • TomChiron
      From my limited understanding I would guess: That pattern on the underside acts as the capacitive touch sensor for each potentiometer / encoder. It seems that the housing of the encoders are not connected to ground or anything, right? In this...
    • TomChiron
      A few more thoughts: You can get the WS2811 as single chips. These one are on the 12V LED strips, where one chip drives 3 RGB LEDs. https://www.adafruit.com/product/1378 I don't know if or how it would be possible to use them with low current...
    • TomChiron
      There are some types of addressable LEDs also in different sizes. Adressing all 128 LEDs via one pin is handy and very quick. Why not use, e.g., 10% of power (or even less)? That is roughly the same as the mentioned 2mA per LED. WS2812 and...
    • TomChiron
      TomChiron reacted to PaulStoffregen's post in the thread SparkFun To Manufacture Teensy with Love Love.
      Yes, that's my hope... especially coding time! I'm not ready to think about any new products until Sparkfun has been shipping Teensy 4.0 and Teensy 4.1 for a while. We've been pouring a lot of work into this transition for the last few months...
    • TomChiron
      TomChiron reacted to Paul's post in the thread SparkFun To Manufacture Teensy with Like Like.
      We are excited to announce the expansion of our partnership with SparkFun Electronics to include the manufacturing of all Teensy products. Teensy 4.0, Teensy 4.1 and related accessories will now be manufactured by SparkFun in Colorado, USA...
    • TomChiron
      You could try this: disconnect any USB and other connection to a computer. Use a powerbank to power the teensy. Connect headphones to the headphone output of the audioshield. Change your sketch that the microphone input is routed to the headphone...
    • TomChiron
      Technically both is possible and nothing can be damaged. When the Teensy is powered it starts and then it depends what your program is doing and what connection is needed. If the program is not waiting for a serial connection to be there, and it...
    • TomChiron
      Hi guys, I finally managed to finish and release my DIY synthesizer project, hope it is of use or inspiration to anyone! TeensyMix synth is an 8-voice polyphonic synthesizer based on the Teensy 4.1 development board. It is designed to be an...
    • TomChiron
      Not sure if that sort of debouncing would help for your frequencies?
      • 1740132002388.png
    • TomChiron
      Yes, 1,8V is fine for that regulator. There exist different packages with different pin assignments. V_DDD has to be between 1.1 and 2.0V according to the datasheet. As far as I see everything looks correct. The 100k resistors at the line in an...
    • TomChiron
      TomChiron reacted to AussieBruce's post in the thread Fast debounce needed with Like Like.
      Thanks to all, good suggestions that I'll keep up my sleeve. After a bit of playing round, came up with a pulse shaping circuit that it looks like will work. A 150n capacitor from the sense input to Vcc, and a 6K8 resistor from the input to 0v...
    • TomChiron
      TomChiron replied to the thread Fast debounce needed.
      You could add something like that to your if-statement to detect a new pulse only after your defined time window: if (.... && (micros()-lastTime > 15))
    • TomChiron
      Hello, Synth Fest France will take place in France / Orvault (near Nantes) on 11, 12 and 13 April 2025. I have booked a booth there to present my Teensy4.1 and axoloti based DIY synths. I'll be glad to meet other Teensy builders there. This...
    • TomChiron
      It sounds that it would not be an option to have additional buttons connected to the Teensy to trigger the macros? That would make things easier. Long ago I've worked with AutoIt. It is a script language where you can do many things under...
    • TomChiron
      Why do you need an alternative to AutoHotkey? What is the setup? A Windows PC with a Teensy connected via USB? It could be possible to connect the computer mouse to the Teensy via the USB host port. The Teensy can process the input and decides...
    • TomChiron
      TomChiron reacted to ctadlock's post in the thread Teensy 4 Bootloader at JLCPCB with Like Like.
      I went through the process of getting the Teensy 4 bootloader chip (IC_MKL02Z32_T4_QFN16) added to the list of parts at JLCPCB. As always you will need to buy it from PJRC and send it to JLCPCB as a consigned part. Its now JLCPCB part#...
    • TomChiron
      This was it, and it turns out I can still use the data I had collected before. Thanks!
    • TomChiron
      I remember one thread with a problem where it was solved by using another library: https://forum.pjrc.com/index.php?threads/automated-still-controller-hx711-trouble.73430 ... but it seems you are already using the library which worked there...
    • TomChiron
      TomChiron reacted to emmanuel63's post in the thread Another Theremin-like instrument with Like Like.
      Hello, Here is another Theremin ! This one is very simple : a Time of Flight sensor for the pitch, and FSR for volume. The synth section is also very simple, just one oscillator, a LP filter, minimalist LFO and reverb. In fact, this project is...
    • TomChiron
      I am still trying to understand: What kind of noise are we talking of? Is the noise only present during SD-card playback? Or always? Without the class D amp, connecting the line-out of the audioshield to another amplifier, there is no noise...
    • TomChiron
      What kind of noise do you hear? Is it noise during playack from SD card? What exactly is meant by "other setups"? Do you have another configuration where there is this noise not audible? What power source are you using? Have you tried (as a...
    • TomChiron
      Transdimensional is a fancy name for a way to simplify the use of very complicated synthesis algorithm. It is a kind of morphing that takes care of navigating through the synthesis parameter hyperspace. This first synth navigates in a 54...
    • TomChiron
      TomChiron replied to the thread vBat specs??.
      Thanks, BillFM. I was searching the reverence manual and couldn't find it there. https://www.pjrc.com/teensy/IMXRT1060RM_rev3_annotations.pdf
    • TomChiron
      TomChiron reacted to BillFM's post in the thread vBat specs?? with Like Like.
      The Battery Backup operating range is listed in 1060 Electrical spec as 2.4V to 3.6V on page 23. There's also a Note #3: In setting VDD_SNVS_IN voltage with regards to Charging Currents and RTC, refer to the i.MX RT1060 Hardware Development...
    • TomChiron
      TomChiron reacted to internett's post in the thread vBat specs?? with Like Like.
      Thanks great. The first 2 i've read, but I missed the one Paul gives the max (3rd thread).
    • TomChiron
      TomChiron replied to the thread vBat specs??.
      Maybe you could find some information here: https://forum.pjrc.com/index.php?threads/beware-t4x-rtc-power-consumption.64216/ https://forum.pjrc.com/index.php?threads/teensy-4-1-rtc-battery-life-question.75985/ ... but probably not about maximum...
    • TomChiron
      That sounds like an interesting project. Not sure if I understand the idea/question. The setup is: - Teensy with GPS module provides timestamp signal over USB audio - Smartphone (Android?) records video signal from integrated camera together...
    • TomChiron
      Cross post from: Hey Teensy coders. This Monday FastLED is planning on changing the default WS2812 driver from the previous default one to Kurt Funderburg amazing ObjectFLED driver. In case you don't know, this is the spiritual successor to...
    • TomChiron
      TomChiron reacted to beermat's post in the thread Teensy remote display with Like Like.
      The driver library and Windows / MacOS client software have been updated to support streaming buffers over USBSerial1. Just need a bare Teensy 4.x and a USB cable!
    • TomChiron
      TomChiron reacted to beermat's post in the thread Teensy remote display with Like Like.
      If you have a Teensy with Ethernet and a TFT screen that you update with buffers of 16 bit RGB565 pixel data you should be able to use this code, along with the supplied Mac or Windows client, to also display (and control) the screen remotely on...
    • TomChiron
      Thank you it is working. I wanted the SD card so that I could allow users remap the keys on the keyboard. I added a video of what the thing looks like. On the github page if you care to see it. I appreciate you spending time on my problem, I was...
    • TomChiron
      To check the hardware you can use a simple sketch without any library, e.g. use the pushbutton pullup example from tutorial 3. If the pins are working you can rule out any problems with your cable connections or the Teensy hardware. From a quick...
    • TomChiron
      https://github.com/KurtMF/ObjectFLED This closes the issue with Audio library compatibility. Thanks to u/lpao70 for reporting the issue and validating the fix. And as always, thanks to Paul S. and u/ZachVorhies for help and insights. Release...
    • TomChiron
      TomChiron reacted to ghostintranslation's post in the thread Drone 2.0 with Like Like.
      Hi, I officially released the new version of my Drone eurorack module, now based on my Motherboard 2. Sound pack here: https://ghostintranslation.bandcamp.com/album/drone-2-sound-pack Drone features 4 voices with Sine and Resonant Noise...
    • TomChiron
      It turns out, the Teensy 4.1 and 4.0 are absolute LED beasts! The claim is all 50 pins can be driven with DMA. Can that be possible? The backend driver is ObjectFLED which just came out for Arduino-Teensy. FastLED 3.9.8 just made this a core...
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