Messages

1

preenfm2 and preenfm3 / Re: Backup and Restore Function

« on: April 03, 2021, 07:41:25 PM »

Ahh yes...  mentioned in the Mixer part of the documentation!
Thank you for the detailed explanation of saving the instrument images to a default file here! 
I now have a "MIX.DFL" file on my sd memory card!
I also found the ability to create other separate instrument memory images and save them in a self titled file that I called "SAMPLES1.MIX".
It will take a while to fill up my 16GB sd card!

2

preenfm2 and preenfm3 / Backup and Restore Function

« on: April 03, 2021, 06:03:54 AM »

I love the sounds and the presets that I have been able to implement on my Preenfm3 since I built it a few weeks ago!

So... that leaves me with another question-
Is there some sort of way that I may save the complete group of 6 instruments, the presets and mixers to a system file on the SD card.  The setup.txt file should have a way to tell the Preenfm3 at power-up to load the saved image file from the SD card, if it exists!

Each time I cycle the power, my device comes up cleared to initial setup defaults.  Is there a way to backup and restore a system image after power cycling?

3

preenfm2 and preenfm3 / Re: SD Card Issues...

« on: March 22, 2021, 11:57:23 PM »

Problem solved!
Some of the pins on the SD Card socket were not soldered!  It wasn't the 4 pin connector, it was the SD Card connector on the display! See the circled connector pins.
Finally took my Preen upstairs to my shop and probed around a bit with an oscilloscope.

4

preenfm2 and preenfm3 / Re: SD Card Issues...

« on: March 21, 2021, 10:32:01 PM »

I verified all the soldering with an eye-loop and only have issues with cleaning the flux off the board. 

I attached a photo of the back of my board so that you may be able to see if I am missing anything as far as the SD card and the configuration.  I compared my configuration with the photo that you published in the documentation and I have just a couple of things different.  The DC-IN jumper is not in my CFG because I am currently powering through the USB port.  I assumed that the SWD connector is for programming the processor and put pins there.  I have not added any other wire changes to this project.
Any comments?  (I definitely appreciate the time you are putting into this!  We are going to build the second PreenFM3 tonight!)

5

preenfm2 and preenfm3 / Re: SD Card Issues...

« on: March 21, 2021, 08:51:12 PM »

Attached you will find a picture of the TFT and the connector that I used to plug it into the PreenFM3 PCB.

If there is a wiring error, is it something that I may rewire to fix?  I see that the three series matching resistors R1, R2, and R3 are not on my TFT.  Also R5 is not installed on my TFT.

Thank you!
-Jeff

6

preenfm2 and preenfm3 / [solved] SD Card Issues...

« on: March 21, 2021, 05:30:28 PM »

I have just finished assembly of my PreenFM3 and I cannot get the SD card to function.  I am running V0.105 and am powering the unit from the USB connection.  I am using one of the recommended "Sandisk Ultra - SDHC UHS-I Card" 16GB card.  It has been formatted as FAT32 by the recommended "SD Card Formatter" program.

The Preenfm3 appears to be functioning well as I am able to use the editor and MIDI ports and generate tones etc.  It only appears to be that the SD Card is not functioning.

I loaded the pfm2_usb.zip onto the SD Card and then tried moving the contents to a /pfm3/ subdirectory on the card using my laptop.

I have a few of questions:
1. Is the SD Card supposed to be r/w accessible to my computer as a typical memory card?
2. What is the expected directory structure for the files on the SD Card when used on my PreenFM3?
3. I get an error code of #-6# on the tft at powerup of the Preenfm3.  Is it possible that I have a jumper incorrectly strapped that would cause this to occur?  It appears that the connectors and operation of the tft are working correctly as a display. The SD connector on the display is present and connected to the Preenfm3.

Any comments or suggestions would help!  Thank you...