Status is that I am working on the firmware. Not that it does not work but the menu system was a bit confusing made by me.
So that is the absolute last thing that I want to correct before sending them out.
I would like to apologize for that, but I think it should be corrected
Br
Sonny
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So that is the absolute last thing that I want to correct before sending them out.
I would like to apologize for that, but I think it should be corrected
Br
Sonny
Sent from my iPhone using Tapatalk
Status:
DAC Boards are ready.
I am working on documentation and electrical specification right now.
BR
Sonny
DAC Boards are ready.
I am working on documentation and electrical specification right now.
BR
Sonny
Yes, well done. I'm really looking forward to hear the sound from this one, and try the new input options 🙂
Hi all.
To give some update.
I have found 2 flaws in the pcb.
I am going to change it over the weekend. I do not want to send it out to the customers with cut traces.
I am sorry, but I hope you understand
BR
Sonny
To give some update.
I have found 2 flaws in the pcb.
I am going to change it over the weekend. I do not want to send it out to the customers with cut traces.
I am sorry, but I hope you understand
BR
Sonny
I have been speaking to Aboe.
He lives 20min drive from me
I am preparing a board that he will test to certify that everything works.
That will be after the weekend.
He lives 20min drive from me
I am preparing a board that he will test to certify that everything works.
That will be after the weekend.
Hi Sonnya,
Just finished reading all the posts and I'm interested in the DAC(Mainboard with simple frontpanel and discrete outputstage). Can you add me to the list please?
Best regards,
Peter
Dac test
Hi
Got the new Dac yesterday for testing - and so far it plays very well in USB-mode from Windows and Mac - have tried several audioformats, and they all work great 🙂
Later I will test with raspberry.
And then the other inputs 🙂
Aboe
Hi
Got the new Dac yesterday for testing - and so far it plays very well in USB-mode from Windows and Mac - have tried several audioformats, and they all work great 🙂
Later I will test with raspberry.
And then the other inputs 🙂
Aboe
Dac test 2
Hi
There was some small left/Right issues, but they are now solved 🙂 - and I have now played some hours with a raspberry connected by USB, and it plays really good.
I would dare to say that it sounds better than the previous Dac 🙂 - more calm and more musicality 🙂
Next step is to test the front panel and the other connections - hopefully by the end of the week.
Aboe
Hi
There was some small left/Right issues, but they are now solved 🙂 - and I have now played some hours with a raspberry connected by USB, and it plays really good.
I would dare to say that it sounds better than the previous Dac 🙂 - more calm and more musicality 🙂
Next step is to test the front panel and the other connections - hopefully by the end of the week.
Aboe
Update:
We had A long list of errors in the layout which is listed up below:
1) two jtag headers where placed to close to get the programming cable onto it. - fixed
2) wrong voltage on the voltage regulation on the USB side. 4.7V but should have been 3.3V - fixed
3) missing connection of 3.3V to one of the two jtag headers - fixed
4) cpld needed 1.8V instead of 3.3V on the inner core - fixed
5) reset circuit for ak4490 missing 3.3V - fixed
Some of you have expressed concern on the building height. One of the connectors in between the discrete board and the dac board is for firmware upgrade. It will most likely not be used. For the same reason the building height of the dac will only be 2mm higher. (Due to the rca connection for spdif. If it is a problem we can let it be unpopulated)
Regarding front panel. On the picture below you can see a test setup running. Because of all the errors above we wanted to make sure that the front panel with pca9955 does work. (I2C to 16 channel pwm converter for led ). So the front panel is the front panel that we have designed for the Aavik U-300. It has the same parts as the simple front panel.
We have put a header onto it. So that it can be used to control a motorized attenuator from alps. It just need a cheap D.C. Motor driver from spark fun
ttps://www.sparkfun.com/products/13911
Now it works. Aboe is helping me with tests.
Sent from my iPhone using Tapatalk
We had A long list of errors in the layout which is listed up below:
1) two jtag headers where placed to close to get the programming cable onto it. - fixed
2) wrong voltage on the voltage regulation on the USB side. 4.7V but should have been 3.3V - fixed
3) missing connection of 3.3V to one of the two jtag headers - fixed
4) cpld needed 1.8V instead of 3.3V on the inner core - fixed
5) reset circuit for ak4490 missing 3.3V - fixed
Some of you have expressed concern on the building height. One of the connectors in between the discrete board and the dac board is for firmware upgrade. It will most likely not be used. For the same reason the building height of the dac will only be 2mm higher. (Due to the rca connection for spdif. If it is a problem we can let it be unpopulated)
Regarding front panel. On the picture below you can see a test setup running. Because of all the errors above we wanted to make sure that the front panel with pca9955 does work. (I2C to 16 channel pwm converter for led ). So the front panel is the front panel that we have designed for the Aavik U-300. It has the same parts as the simple front panel.
We have put a header onto it. So that it can be used to control a motorized attenuator from alps. It just need a cheap D.C. Motor driver from spark fun
ttps://www.sparkfun.com/products/13911
Now it works. Aboe is helping me with tests.
Sent from my iPhone using Tapatalk
Hi Sonny,
Will there be an updated firmware for your first generation DAC (I believe V1.1?) using preamplifier and display to match the updated DAC/display you released some time ago? Also, is the first gen capable of playing pure DSD and not DoP (I believe the answer is yes on Pure DSD but not sure 100%)?
Thanks
Do
Will there be an updated firmware for your first generation DAC (I believe V1.1?) using preamplifier and display to match the updated DAC/display you released some time ago? Also, is the first gen capable of playing pure DSD and not DoP (I believe the answer is yes on Pure DSD but not sure 100%)?
Thanks
Do
Hi Do.
I will release new firmware for the preamplifier to use with the DAC, but it will be after the summer.
First generation will play both DSD and DoP.
BR
Sonny