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21
PreenFM2 / Re: PreenFM Eurorack module
« Last post by tangram on April 03, 2019, 12:04:18 PM »
What is your disapointment about?

You need to poulate the boards and wire it together and your are ready to go.
I will answer all your questions by email.

Firmware is available on PreenFM Github.
https://github.com/Ixox/preenfm2/releases
Get this file: pfm2_Eurorack_2.09a.zip


The modification has been done by many users.

ok, thanks for your information. I will try to do it.
Klaus
22
PreenFM2 / Re: PreenFM Eurorack module
« Last post by served on April 03, 2019, 11:00:24 AM »
Another step on the way.
A dedicated PCB for Semimodular/Eurorack design.
The depth of this module is 3cm. Which makes it Skiff ready.
A special Skiff is in developement. That will allow to use USB to power the system.

23
PreenFM2 / Re: PreenFM Eurorack module
« Last post by served on April 03, 2019, 07:22:27 AM »
What is your disapointment about?

You need to poulate the boards and wire it together and your are ready to go.
I will answer all your questions by email.

Firmware is available on PreenFM Github.
https://github.com/Ixox/preenfm2/releases
Get this file: pfm2_Eurorack_2.09a.zip


The modification has been done by many users.

24
PreenFM2 / Re: PreenFM Eurorack module
« Last post by tangram on April 02, 2019, 08:14:56 PM »
Hello,
I have now also bought the conversion kit and am still very disappointed.
I have the following questions:
Which software version is needed and where can I get it?
Is there a reasonable construction manual for the modification?
What about the IC3 7805? Do I have to solder it in?
Where is the circuit diagram?

I'm really in doubt whether I'm going to do the modification.
The information is nevertheless very daring.
Has a user of the Preem already done the modification?

Greetings Klaus
25
PreenFM2 / Re: Yellow OLED : high frequency solution
« Last post by served on April 02, 2019, 07:35:58 AM »
Done and working.
I am currently a bit struggling with semimodular part of the project design.
But in few weeks I should have that ready.
26
PreenFM2 / Re: Yellow OLED : high frequency solution
« Last post by kreeper_6 on April 01, 2019, 05:22:07 PM »
I have contacted newheaven and Raystar.
They are extremely secretive about the design and they dont acknowledge the noise issue.
After tens of emails I got only one fact that I could use. It was about the inductor specs that are used. And they didnt want to comment anything else.

We decided to take a more simple and easier path.
I have re-designed PreenFM PCB to make this issue disappear. PCB Drawings will be released in nearfuture. (a month or so)
Still need to test and measure and maybe make some corrections.

Newhaven never got back to me as expected. How is that new PCB coming?
27
PreenFM2 / Re: PreenFM Eurorack module
« Last post by served on March 23, 2019, 08:54:18 PM »
Also. Dont forget to do the V/OCt callibration procedure.
28
PreenFM2 / Re: PreenFM Eurorack module
« Last post by Thonihz on March 22, 2019, 10:51:02 AM »
Pictures from Van Daal web
Thanks to Ardi Mäesalu
Excellent!!




D10-D13 are 1N4XXXX
The rest 8 are Schotkey.
 So 4 diodes in the PSU section or Upper section of the board are 1N4XXX.

L1 can be replaced with wire. It might need an inductor if you have very noisy 5V supply in your eurorack.
But its not mandatory.

USB + and - should be wired to the PReenFM main board. There is a connector labeled USB 2- 3+.

29
PreenFM2 / Re: PreenFM Eurorack module
« Last post by Thonihz on March 21, 2019, 07:27:29 PM »
Hello

I received a preenfm2 eurorack retrofit diy kit

Do you have a diagram of the electronic board?

For example, i do not know the position of the diodes

Thank you

Best regards
30
PreenFM2 / Re: PreenFm2 wont start and display problems
« Last post by Xavier on March 18, 2019, 10:03:18 AM »

Glad to read it's now working.
The power supply needed is a regular 7.5v or 9v ground outside.

Xavier
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