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Hello and Merry Christmas to everyone!! I need your opinion on my project, I will explain to you: I built a midi controller with a teensy 4.1, it is equipped with 54 potentiometers, 54 switches, 64 LEDs, and a 37-key keyboard (with velocity and aftertouch). The potentiometers and switches are...

Thank you for your answer, I begin to understand, in fact SPI.tranfer sends only one byte. I use a Teensy4x. I corrected the code to directly transmit a 32-bit message. #include <Arduino.h> #include <SPI.h> byte syncPin = 14 ; unsigned int one; unsigned int two; unsigned int three; unsigned...

Hello everyone, It had been a while since I had been back:cool:. I am currently programming a PCB with a DAC8168 (8 outputs 14bits). I found a suitable piece of code to program it. #include <Arduino.h> #include <SPI.h> #define syncPin PB8 unsigned int one; unsigned int two; unsigned int...

Hello everyone. I allow myself to consult you about one of my projects. I have just made a monophonic analog synthesizer driven by midi. For this I use a teensy 4.1. The teensy itself drives 36 DACs and 26 Boolean outputs for the switches. Everything works wonderfully! However, I now want to...

Thank you for your answer ! Well I have great news:D! After a short night, I managed to configure the MAX11300 to obtain a sample rate of 80 µS:cool:!! The solution : The solution is not in the library, I used the configuration software for MAX11300 to generate the code to configure the DACs...

Hello:D, I am contacting you to ask for your help on my project. I use a MAX11300 DAC to generate ADSR type envelopes. Everything works pretty well, however I find that the sampling of the DAC is very bad (around 500 µS:mad:). According to the datasheet of the manufacturer...

Yes the entire audio path must remain completely analog. The CVs are there to manage the opening and closing of envelopes and filters such as the VcF / vca .

Hello everyone , I come to you because I have questions. I'm working on a monophonic analog synthesizer project totally driven by midi. This project is progressing well, every day has its victories... However, eventually I want to make a polyphonic synthesizer, the initial idea was to make 6...

Good morning all:cool:, I need your help, I'm trying to use a teensy 4.1 with TLC5940 ... Unfortunately it doesn't work:mad:. The arduino IDE displays "unknown chip", it seems that the library is intended to work only with older versions of Teensy (2.x, 3.x, ...) Is it possible to modify the...

Hi, unfortunately I have the same problem, I have a teensy 4.1 and I cannot get the TLC5940 to work ... Did you find a solution?

Hello everyone:D, It's been a while since I worked on the manufacture of an analog synthesizer totally controlled at midday. Thanks to your help and support, I realize this project a little more every day. Hello everyone, It's been a while since I worked on the manufacture of an analog...

Its good !!! I found the solution !! While searching on the forum I found a member who wanted to light leds with midi messages. I took its code and I modified it to match the project (I have on / off switches, on / off / on switches, and an on / on / on / on switch. const int channel = 1; //...

Hello everybody, I am currently making a USB MIDI controlled synthesizer. The microcontroller is a teensy 4.1. This should drive 2 dac Max11300 and 7 switch DG333. I specify, I am new to programming, I learn a little more every day thanks to you To drive the DG333 switches I use the teensy...

good now step 2: There it is well it works by midday in Usb, however for a synthesizer you need two envelopes, one for the vcf and one for the vca. So now the goal is to be able to manage two separate envelopes simultaneously. Honestly, I have no idea how to proceed ... if you have any ideas...

Its good !!! I found the solution ! I don't really understand why but the "word" variable was the problem .... I replaced it with "int" and everything works !!!! //---------------------------------------------- // CHARGEMENT DES LIBRAIRIES //----------------------------------------------...

Damn I forgot to specify, I use a Teensy 3.6 and an MPC4922 for the DAC

Hello everyone!:cool: I come to implore your help for my project ... Let me explain THE PROBLEM: I am making an analog synthesizer totally controllable in MIDI. For the management of ADSR envellope I use the OZOE module (https://www.ozoe.fr/), the Ozoe envellope is based on an arduino, the...

I use 23 digipots MCP41HV31. Finally I was able to recover 23 digital pins on the teensy. That's a lot of track! Now the question is "Demux or not demux". Is there any advantage to using Demux or directly using teensy pins?

Thank you for your answer, I also use mux4067 to manage my analog pots from my midi controller. However in this case it is a digital potentiometer. I'm looking for a way to expand my CS pin (chip select) to be able to communicate in SPI individually with each of the digital potentiometer ( i...

Good morning all, I am writing to you because I have an existential question ... I use a teensy 3.6 which controls 25 digital potentiometers in SPI. Unfortunately, I do not have enough CS pins available. After much research I have two solutions at my fingertips, and I don't know which is the...

At first I planned to use comunication with the coupler, but it was a lot of problem. In hindsight the USB communication seems more suitable in my project, because I intend to use 6 teensy with the MIDI controller. I plan to use a USB hub port 7 ucb2517. Mass loops are going to be a big...

Indeed the DAC is for the synthesizer. The MAX11300 is very interesting! I did not know, so I inquired about it, however there are several problems with this IC, firstly it is a 12bits, the voltage of the DAC is limited to -5 / + 5v or 0 / + 10v. AD5360 can do -15v / + 15v, and it's a 16bits...

Hello everyone, I intend to use a DAC AD5360 with my Teensy 3.6. However, I wonder about the connections. From the information I could find (datasheel / evaluation board / arduino library) the DAC should be connected as: SDO / SDI / SCLK / SYNC (cs) go to the teensy SPI port. LDAC / RESET /...

voici un schéma du circuit de enveloppe piloté par un teensy 3.6. Le DAC sur le schéma est un DAC8718, 8 channels 16 bits. Sa plage de fonctionnement va jusqu’à 15V. https://imgur.com/rUBAsl8

Hello everyone, As part of our synthesizer project, we chose to use the HADSR envellope from https://midisizer.com/5u/dds-ahdsr-for-5u-modulars/ code source : https://midisizer.files.wordpress.com/2014/07/src_adsr.zip (It seems to be a super envellope, very complete, and in addition the code is...

In fact, that's what I did, however I put 7 together. While looking on the forum I found the answer to my question: MCP23S17, 16 pins digital in SPI. We can put 8 ic on the same port spi, the ideal for my project!

Good morning all, I need help with my synthesizer project. To control by MIDI the different analog switches of the synthesizers, I replaced them with digital switches (DG444 and MAX333ACWP). To control the snumeric switches, all you need is a high or low signal. I had planned to fly them with...

https://i.imgur.com/N6wPLMG.png

Hello, I am currently making a 6 voice polyphonic synthesizer. I recently posted on this forum and your advice was very valuable. The signals of the switch and potentiometers of the controller are converted into a midi message by a teensy. These midi messages are transmitted to 6 voices by...

Thank you for your reply. I thought of this solution, however the Teensy USB port (MIDI controller) is already used for sending and receiving MIDI data from the computer. Maybe it is possible to use the second USB port of the teensy? Basically a USB port for sending and receiving MIDI data...

Hello, I allow myself to write to you because I need your help and advice in my project. I am new to the world of teensy. I make an analog synthesizer controlled in "midi". For that I chose teensy (teensy 3.6). I made most of the schemas however I ask myself several questions. The synthesizer...