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Building with the Soekris dam1121
Building with the Soekris dam1121
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Old 14th September 2017, 03:25 AM   #311
vdi_nenna is offline vdi_nenna  United States
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Anyone know how to move the lock LED on the 1021 board to a front panel LED to do the same?

Thanks.
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Old 14th September 2017, 08:04 AM   #312
rhythmsandy is offline rhythmsandy
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Originally Posted by vdi_nenna View Post
Anyone know how to move the lock LED on the 1021 board to a front panel LED to do the same?

Thanks.
parallel it with another LED the current consumption of leds are quite low or just take the signal out as transistor ref and drive the larger LED with transistor if you are really concerned about the current consumption of LED.
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Old 25th September 2017, 08:12 AM   #313
nautibuoy is offline nautibuoy  United Kingdom
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I've finally started to assemble my Soekris DAM1121 DAC.

Having received the panels from Front Panel Express I've started by assembling and installing the AudioZen control unit - available from the Vendor Bazaar.

So, here are some pictures of progress so far. The AudioZen control unit is installed and working.

Click the image to open in full size.

Click the image to open in full size.

A more general layout image showing the Soekris DAM1121 module and the JLSounds USB board. The two Black PCBs are from Acko and are for the power supplies for the Soekris and JLSounds modules; they'll be next to assemble and install. The large empty area is where a Broskie Aikido (ACF-2) buffer will be located.

Click the image to open in full size.
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Old 1st November 2017, 02:08 PM   #314
wyan is offline wyan
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Building with the Soekris dam1121
Hi, I am starting to work with DAM1121.

I connected the RXD/TXD pin to my laptop through a USB adapter. I have installed drivers and also babun emulator. Somehow my laptop could not recognize DAM. What might be the cause?

Also, without entering the uManager, will the DAM play at default? Right now nothing come out of it. I check all the power and nothing seem to wrong. Thanks.
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Old 1st November 2017, 06:31 PM   #315
randytsuch is offline randytsuch
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Originally Posted by wyan View Post
Hi, I am starting to work with DAM1121.

I connected the RXD/TXD pin to my laptop through a USB adapter. I have installed drivers and also babun emulator. Somehow my laptop could not recognize DAM. What might be the cause?

Also, without entering the uManager, will the DAM play at default? Right now nothing come out of it. I check all the power and nothing seem to wrong. Thanks.
Did you see my blog?
It may help
soekris setup

I remember some 232 adapters didn't work, think it has to do with voltage levels. Blog has what I used.
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Old 1st November 2017, 08:01 PM   #316
Vit123 is online now Vit123  Russian Federation
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wyan,
for dam1121 you need USB-RS232 adapter with TTL level (0 - 3.3V).

DAC must work without uManager and without any connection to RXD/TXD pins.
You need serial connection only for changing filters, phase, volume level.
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Old 1st November 2017, 08:46 PM   #317
wyan is offline wyan
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Building with the Soekris dam1121
Thanks, Randy, I did follow your post and downloaded extrapuTTY. However, when powering on, the screen does not return the messages about 1121 (version etc). Instead, I got a green block. I suppose it is a connection problem and maybe I need another USB-RS232 adapter.


Hi, Vit123, I do believe that the adapter I've got is the right one. I will have to double check. Even when I unplug the adapter, there was no sound. Your message confirms my guess that the board should work without opening uManager. I will double check all the connections. I hate to deal with those tiny pins and maybe I should make some PCB (such as the one in Nautibuoy's post that has DIP socket for J2 & J3). Cheers.
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Old 1st November 2017, 09:06 PM   #318
randytsuch is offline randytsuch
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Thinking about it, since you're not getting sound either it may be a different, more basic problem.
Does the LED turn on solid? When it locks on a signal, it should be solid.
Are you using the I2S interface?

But for the 232, did you set the baud rate and other settings?
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Old 5th November 2017, 06:45 PM   #319
nautibuoy is offline nautibuoy  United Kingdom
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I've been recovering from a cycling accident so my 1121 DAC project has been on-hold for several weeks. I resumed work on it this weekend and have it almost ready for an audition but I'm still waiting for delivery of some small PCBs rgat will interface the 1121 ro the JLSounds USB board; I just have the final hook up and some small tidying up tasks to do. The other main modules are an AudioZen DAC controller, DAC power supplies from Acko and a Broskie ACF-2 output buffer;

Click the image to open in full size.

Click the image to open in full size.

Last edited by nautibuoy; 5th November 2017 at 06:49 PM. Reason: typos!
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Old 7th November 2017, 03:41 PM   #320
wyan is offline wyan
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Building with the Soekris dam1121
The Dam1121 is now playing music for me!

It is supposed to be able to play in stock form, no need to touch the uC. I am using Slagle autoformer as volume control. No output stage right now.

It didn't work a few days ago because I made the mistake and only connected ONE VCC5D power supply. The two pins are indeed for two sub-circuits. I did a measurement and the impedance between them is about 300K. All the GND's are connected with each other though, digital or analog.

I also just bought this bluetooth to serial adapter:

Wireless Serial 4 Pin Bluetooth RF Transceiver Module HC-06 RS232 With backplane | eBay

Since it accepts 5V VCC so I just use the VCC5D. Downloaded android app "Bluespp" but could not establish a connection right now since the connection needs a password. Need to check with the seller.

Cannot comment on the sound now since I only connect one channel, and the speaker is just a naked Tone Tuby 12" guitar driver (guitar drivers can take abuse just in case anything bad happens). Still I am thrilled and am liking it. Will report back.

Big thanks to Soren for the wonderful module! Cheers.
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