New Teensy 4.1 DIY Synthesizer

[Rolfdegen]

The 1st draft in 3D

[Rolfdegen]

It is progressing ..


The 3D model of the motherboard. The board is roughly the size of a laboratory card in euro format (160 x 100).


The Fx module is simply plugged onto the back.







The current prototype



Greetings Rolf

[Rolfdegen]

Hallo friends


The board is now ready. We thought about integrating an expansion connection (K4, K8 ) in the synthesizer for the electronics hobbyist).


It consists of 3 analog inputs (0-3.3V), as well as data lines and power supply for controlling a second 74HC595.


This means that potentiometers, switches and control voltages can be queried via two 16-channel analog multiplexers (74HC4067), for example.


Frontside


Backside


Control Circuit with expansion connect ( K4, K8 )


Greetings. Rolf

[Rolfdegen]

Hallo friends..

Now we are done and we start producing circuit boards in China







Gruß Rolf

[danielblues]

Hi,
Looking very good!
What will be your business model for this? Can I start ordering a a teensy 4.1 and audio board?
Thank you
Daniel

[Rolfdegen]

Hi Daniel

The PCB boards or DIY kit with case can be ordered in future from Tubeohm.com.

You don't need an audio card. An 16Bit audio converter (PT8211) is fitted on the board.

Greetings Rolf

[alfrede]

Hi Rolf, can you tell me when the board will be available?

[trevorbryden]

Hello rolf! How much $ and how long until a Jeannie is in my hands here in California? I don't see them on tubeohm yet. Also, the presets seem identical to my Tsynth...how did that happen? Are they a set of known synth presets used by a bunch of synth designers?

[Rolfdegen]

@alfrede
We are waiting for the first boards. It will take a while before circuit boards or kits can be ordered.

@trevorbryden
The Jeannie Synth-core is a little different from TSynth. It's smaller and has 8 voices, 8 banks with 64 different waveforms, Sequencer, 24-bit Fx chip for reverb, delay, corus and more. LowPass filter at the output to reduce high frequencies. Boost switch for more depth. It will be a transparent yello plexiglass case.

The price has not yet been determined. We are still negotiating with dealers in different countries.

Greetings from germany. Rolf

[blakeAlbion]

I'll be watching this space.

[Rolfdegen]

Hello..


It won't be long before we can hold the circuit boards in our hands and then test them.


My friend Andre has already published the "Jeannie" project on his homepage tubeohm.com.


Link: https://www.tubeohm.com/new-developement.html


Greetings Rolf

[Rolfdegen]

My friend Andre is busy soldering. I'm curious ..

Soldering the components shouldn't be a problem. I hope the SMD pads are not too small and can be soldered well.






Example of the first case








Greetings. Rolf

[trevorbryden]

I'm sure Andre is a great guy, but Jeannie needs some new friends out here in California!

[Rolfdegen]

Yes.. I think so