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dam1941 - Next Gen Discrete R-2R Sign Magnitude 24 bit 384 Khz DAC module
dam1941 - Next Gen Discrete R-2R Sign Magnitude 24 bit 384 Khz DAC module
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Old 13th June 2019, 04:18 PM   #661
Blitz is offline Blitz  Germany
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I guess you neededto cut some traces, no ? Do you have detail pictures where you did that ?
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Old 13th June 2019, 04:31 PM   #662
Peter Daniel is offline Peter Daniel  Canada
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The trace powering display was cut here:
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Old 13th June 2019, 04:44 PM   #663
Peter Daniel is offline Peter Daniel  Canada
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Powering USB was described here: dam1941 - Next Gen Discrete R-2R Sign Magnitude 24 bit 384 Khz DAC module
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Old 13th June 2019, 05:36 PM   #664
Blitz is offline Blitz  Germany
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Thx a lot... And did you feel that a highend shunt reg like the Salas impoved the display quality as well..?... just kidding, but you made a remarkable effort here... will follow you trail... i want a shunt regged display as well
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Old 13th June 2019, 05:54 PM   #665
analog_sa is offline analog_sa  Europe
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dam1941 - Next Gen Discrete R-2R Sign Magnitude 24 bit 384 Khz DAC module
How about just a power switch to cut the display board off when listening?

I just added an Arduino to a friend's DAM1021 and discovered nothing less than a power switch can make the Arduino disappear.
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Old 13th June 2019, 06:40 PM   #666
euro21 is offline euro21  Hungary
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dam1941 - Next Gen Discrete R-2R Sign Magnitude 24 bit 384 Khz DAC module
I use isolated (Dimdim's ArDAM Lite GB for ArDAM Lite bare PCBs separated PSU for Arduino and isolation) serial control and display for my 1941.

Listening the music no effect whatsoever if control (power) on or off.
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Old 15th June 2019, 04:52 PM   #667
Peter Daniel is offline Peter Daniel  Canada
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Quote:
Originally Posted by analog_sa View Post
How about just a power switch to cut the display board off when listening?
That is actually a very good suggestion. I just installed a switch that disconnects power from the display board. With a good power supply, the difference is not that much, especially when exactly same components are being used in both display and digital regulators, however with display off, I have a feeling that the sound is less edgy, with more smoothness. I like it with display off, and volume control still works.
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Old 24th June 2019, 03:15 AM   #668
kenneth_obee is offline kenneth_obee  Hong Kong
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I modified dimdim's ardam1021-lite-project (ArDAM1021 Lite Project | Dimdim's Blog) so that it displays input, sample rate, filter, type and volume in one screen. I didn't use the IR receiver of ardam1021-lite but keep original IR and volume control given by dam1941.
I also added an one way isolator so that it isolates the arduino nano with the dam1941. Since the isolator that I have is one way only, I only connects the TX of dam1941 to RX of nano.
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Old 24th June 2019, 03:21 AM   #669
kenneth_obee is offline kenneth_obee  Hong Kong
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Hi Soren,

When I work on the Arduino nano, I found that there is no message sent from dam1941 when I press "output" and "xfeed" buttons.
Is it possible to add new message code in future firmware release so that we know such button is pressed?

In addition, I have 2 questions:
1. Right now when I press "output" button, it would lower the volume to -30 automatically. Why is it so and what's the purpose of this output button for?
2. Can the volume/filter/input setting be saved? Each time when I power on it automatically reset.

Thanks
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Old 7th July 2019, 03:31 PM   #670
rickmcinnis is offline rickmcinnis  United States
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Peter Daniel,

Wanting to be sure I understand the display on and off switch - without power to the display board the volume control will still work? Or is something else being switched? Looks like the power trace - am I confusing something?
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