Reference DAC Module - Discrete R-2R Sign Magnitude 24 bit 384 KHz

[Dadbeh]

is there a guide for how to upgrade the firmware and install filters?

 

[HH]

is there a guide for how to upgrade the firmware and install filters?

You can use this guide:

randytsuch's audio page: Soekris R2R Dam DAC

 

[bambadoo]

#metoo. I really cant say if the SQ is better or worse yet. Too early and only listened to the linear filter yet. And that for a short while. Will also brew my own when the time comes.

 

[TNT]

It's a bit difficult to say. I only had about 3-4 hours of intensive listening.

The first impression I had is that the sound is more relaxed/ less strained with a little bit more resolution. But the differences a very small.

In the moment I'm listening to Beethovens 9th... realizing that I'm to tired to listen and have to startover tomorrow

If this is the case I think it "sounds" very promising. I think that that is exactly what is needed.

Happy listening!! :-D

//

 

[gavinb]

Anyone update firmware with a mac?

You are going to need a terminal emulation client that can send files via Xmodem.

I am only aware of the dam1021 python (can do filters/should do firmware?), extraputty and Windows HyperTerminal that can do it. (TetraTerm also?)

Maybe homebrew with python? (for fortaa/dam1021)

Had lots of trouble myself, mostly due to serial adapters (USB), none of the FTDI/CP210x adapters seem to work. (garbage...)

GitHub - fortaa/dam1021: Python inferface for the dam1021 DAC

 

[secanbj]

Anyone update firmware with a mac?

I have used Serial

Serial - Modern Terminal for the Mac - Decisive Tactics, Inc.

Worked with both of my serial-USB Cables.

/Anders

 

[Dadbeh]

what USB to I2S adapter would you recommend?

 

[gavinb]

I have used Serial

Serial - Modern Terminal for the Mac - Decisive Tactics, Inc.

Worked with both of my serial-USB Cables.

/Anders

Anders,

Thanks, what serial-USB cables do you use? Make/model/chipset?

 

[iTiberius]

Serial terminals that offer support for xmodem file transfer.


Windows:
Hyper Terminal
Putty -- ExtraPuTTY : xmodem
TeraTerm -- Download File List - Tera Term - OSDN

MacOS:
GoSerial -- furrysoft: goSerial

Linux:
minicom <<<<<<<<<< cmd line

A very good usb to serial adapter is Prolific PL2303

Regards,
Tibi

 

[hannesie]

...........Version 1.19 sounds good...!!

 

[TNT]

In what way?

//

 

[hannesie]

To me it is more detail in the higher frequencies, and more or better mid /depth.

I had a combination off the firmware 1.05 and the moredamfilters (Partypack) and soft as the standard filters.

Now 1.19 and the soft filter, in combination with the Soekris 1021 as a DSD compatible DAC in Roon.
I like it.

 

[gavinb]

Serial terminals that offer support for xmodem file transfer.


Windows:
Hyper Terminal
Putty -- ExtraPuTTY : xmodem
TeraTerm -- Download File List - Tera Term - OSDN

MacOS:
GoSerial -- furrysoft: goSerial

Linux:
minicom <<<<<<<<<< cmd line

A very good usb to serial adapter is Prolific PL2303

Regards,
Tibi

@Tibi

When using GoSerial/MacOS, what is the upload executable to do xmodem? lsz?
It is packaged with GoSerial?

 

[iTiberius]

Drand and drop goserial to applications.

Another - more professional - alternative is VanDyke Software - Download SecureCRT for Windows, Mac, and Linux

Regards,
Tibi

 

[banzas]

Hi, I received my dam yesterday Rev5, so in your opinion is a good idea upgrade firmware in this board? I don´t have an usb to serial, so I can´t say what are my firmware. maybe my board come with latest 1.19.Any idea..
Thanks in advance

 

[passive420]

Hi, I received my dam yesterday Rev5, so in your opinion is a good idea upgrade firmware in this board? I don´t have an usb to serial, so I can´t say what are my firmware. maybe my board come with latest 1.19.Any idea..
Thanks in advance

Would also like to know this and if any hardware modifications such as Vref caps are recommended for the Rev5 1021

 

[Flikoman]

Soekris,

I may have a problem with DAM1021 rev. 2. I have PL2303 USB RS232 converter and I can access DAM via Terraterm with no problem, but when I send file via Xmodem it stucks randomly. Sometimes immediately on 1%, sometimes on 60%.

I've tried different OS, different laptop, baud rate ... This PL2303 converter is OK, I've updated DAM already with it, so I don't think there is a problem there. I'll try on my old computer with true COM port, just to eliminate that.

In the meantime, do you have any clue why would the transfer stop/stuck?

Regards

 

[gavinb]

Soekris,

I may have a problem with DAM1021 rev. 2. I have PL2303 USB RS232 converter and I can access DAM via Terraterm with no problem, but when I send file via Xmodem it stucks randomly. Sometimes immediately on 1%, sometimes on 60%.

I've tried different OS, different laptop, baud rate ... This PL2303 converter is OK, I've updated DAM already with it, so I don't think there is a problem there. I'll try on my old computer with true COM port, just to eliminate that.

In the meantime, do you have any clue why would the transfer stop/stuck?

Regards

Perhaps make sure the connection is good, keep wires short and shielded (serial).

I put the 3 wires(TX,RX, GND) in a 1x4 pin header, the single wire connections pull open and sometimes barely make contact.

Perhaps also toggle 16550 UART buffer on/off.

 

[arnd13]

Hello, I'm trying to use a HC-05 bluetooth-modul (3.3 volt version) for communication with dam1021.

I used a arduino board to program the uart parameters to 115200 so I have the same speed as the dam1021. When I connect the modul with the dam it's possible to establish a bluetooth connection with my Macbook. But it's not possible to connect to the dam1021 (I used Zterm which is functional with a cable connection).

Does anyone have experience with HC-05/06 modul using with dam1021?

Thanks for your help.

Arnd

 

[banzas]

Hello, my Rev 5 board cames with 1.06 firmware, I have performed the firmware upgrade flawlessly to 1.19, with putty app, and reduced the fifo parameters, otherwise I could not achive the 100% upload. I have been listen in raw mode which is a good surprise...