New polyhonic Teensy DIY Sampler

A sign of life...
I think I'll choose a dark blue as the background color for all the LEDs on the LED ring, and change to orange when I turn up the volume.

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All buttons are illuminated! Below the mod control is the fixed control for filter resonance.
With the buttons Mod 1-4 a different modulator source can be selected and controlled with the Modulation controller.
 
Hello friends :)
The first circuit diagrams from Degenerator2. Circuit diagrams for the MCU, power supply, MIDI, and display are coming soon.
The control panel consists of seven ATiny404 modules. Each module has an analog input for four buttons, an analog input for a potentiometer, and a digital input for an encoder. The module is addressed via solder bridges on the mainboard. Pressing a button, encoder, or potentiometer generates an interrupt signal on the ATtiny processor (PB3). The interrupt signal is sent to the Teensy processor via the bus line and evaluated.

Degenerator2 Prototyp
Degenerator2.jpg

Control_Panel.png

LED_Panel.png

MCU.png

Degenerator2_Back.jpg
 
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My prototype schematic is finished. One or two things will definitely change. For example, the decision as to which effect module will be used in the Degenerator2 isn't quite clear yet. But the time will come, and the idea will come ;-) With that in mind, I wish you all a happy Easter and always keep your hands on the instruments :unsure:

MCU_Power.png
Control_Panel.png
LED_Panel.png
Audio_Panel.png
 
Really nice project Rolf!
Besides, just wanted note how elegant and intuitive the schematic drawing is. Beauty!

For the FX module, perhaps this could be an inspiration. Some time ago i started to work on an adaptation of the Jeannie Synth, with most components being SMT, AUX in (using codec instead of an DAC only), already built in FV-1 and other tweaks.
One of them was adding a 2nd module with Teensy4.0 used as a pure FX processor only, acting as "middleman" between the main T41 and the DAC.
Jeannie_HX.jpg
The FX Teensy module would work as I2S slave, receiving all the clocks from the main T41 and being inserted in the I2S data line. Bypassing it, if the module in not used is easy by bridging the Send/Return I2S data pins. Parameter control would be done over I2C.

In the end i did not finish the project, it has some HW changes, which would require to mod the original Jeannie firmware. I wasn't sure if i will have enough time to do all the changes and maintain the alternative version. So it ended up being just a design excercise.
 
Nice Jeannie project. I also had the idea of using the Teensy 4.0 for digital effects. But the question is, can you clone the beautiful effects from the FV-1 with the Teensy 4.0?
 
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