Author Topic: PreenFM Eurorack module  (Read 10543 times)

served

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Re: PreenFM Eurorack module
« Reply #45 on: December 03, 2019, 03:34:38 PM »
Hello,

Please also see what are the Jumper positions on the back of the unit.
Also make sure you are feeding the correct Gate signals to it.

I will try to make a video how to get things going in the beginning.

aze_007

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Re: PreenFM Eurorack module
« Reply #46 on: December 07, 2019, 04:40:55 PM »
Hi both,

I reduced the threshold and that worked. Now at 20% I get all the notes. Thanks for leading me in the right direction.

What about the jumpers, what do they do that I should consider additionally?

Thanks,
Alexander

served

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Re: PreenFM Eurorack module
« Reply #47 on: December 19, 2019, 09:30:12 AM »
If you look at the back of the unit. You will see 3 jumpers.

2 of them will change the GATE and V/oct levels.
You should change the jumper positions according to your system.

GATE jumper alters the levels 0to +10V or -5V to +5V.
Choose the position according to your GATE signal.
Same with the CV2 which is used as Volt per octave control.
You can also choose 0 to 10V or -5 to +5 region.




solipsvs

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Re: PreenFM Eurorack module
« Reply #48 on: December 31, 2019, 07:56:53 PM »
is there a way to make this euro rack level instead of line level?

served

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Re: PreenFM Eurorack module
« Reply #49 on: January 03, 2020, 05:33:46 PM »
Erica synths pico Input module for example.

Naive Teen Idol

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Re: PreenFM Eurorack module
« Reply #50 on: January 03, 2020, 07:37:08 PM »
Is there a way to boost the signal in software or via firmware?

Naive Teen Idol

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Re: PreenFM Eurorack module
« Reply #51 on: January 09, 2020, 02:10:31 PM »
FWIW, I pinged Xavier and he kindly sent new the following in response to this:

Quote
All the voltage conversion is done by the hardware.
The firmware reads input at the MCU level (0 -> 3.3v).
The output comes from the DAC (0 -> 5v converted to -2.5v -> 2.5v)

As eurorack delivers -12v and 12v, i think it should be easy to amplify the audio output with a op amp in amplifier mode.
I have no plan at all to do that.

served

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Re: PreenFM Eurorack module
« Reply #52 on: January 10, 2020, 09:22:50 AM »
Ofcorse it can be done by boosting the signal by adding a boosting stage to PreenFM eurorack format.
But it can also be done with an extra module like Erica Synth Pico Input.

I will try to work out a solution to add an extra gainstage to it. But in current design its not implemented.