TomChiron

Hi All, I ported the TAL NoiseMaker virtual analog synth to run on Teensy 4.1. The synth is implemented as an AudioStream object with stereo output which you can incorporate into your Teensy Audio Library signal flow. It comes with a soundbank...

It is possible that there is something wrong with the configuration of the Octo library - although I don't see anything. 10 Leds? Your strip looks longer btw the color order just changes the order ... even with the wrong order you would get the...

It is possible to connect the ground at the adapter, yes. In large setups, often I find it practical to have the ground connection (from Teensy/adapter to the LED power supply) at the LED strip. There is a ground on the output jack of the Octo...

If there is only one power supply which powers both the Teensy and the LEDs there is only one ground which has to be connected to all parts. In the case of powering the Teensy from another source (USB, powerbank, another power suplly) it is...

15 analog ins for the faders would be easily managable with one Teensy 4.0 and one multiplexer. Very large numbers for analog ins can become challenging regarding grounding and noise to get clean signals from faders or potentiometers. Another...

Have you checked the ground connections? That can also cause such problems, when the ground from the LEDs is not connected to the Teensy / Otco... ground.

Long header pins are possible, e.g.: https://www.sparkfun.com/break-away-headers-long.html 20 mm length is sufficient. I measured it. You can also connect the 8 pins + 5V + GND using wires or on a circuit board. Or design a PCB. In that case...

You can compile the Teensy to act as a USB Keyboard on your PC and send key messages with the keys of your choice such as the CTRL keys. You can find all the details here: https://www.pjrc.com/teensy/td_keyboard.html The connection of a closing...

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.

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

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...

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...

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...

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...

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...

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...

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...

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...

Not sure if that sort of debouncing would help for your frequencies?

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...

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...

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))

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...