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tdmckellar  
#1 Posted : Friday, May 4, 2018 7:40:33 AM(UTC)
tdmckellar

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Completed my DAC / Network streamer and it sounds fantastic!

Components from TPA include:
Buffalo III ES9018 DAC
IVY-III I/V Stage
Placid HD
Placid HD Bipolar
OTTO-II 2:1 Mux
Amanero USB module

Others/Specs
AMB Sigma11 PCB to provide high current power to Arduino and RPi
Raspberry Pi3 with RuneAudio
Kali Reclocker (RPi isolation and reclocking)
Arduino Due (controls power on/off, inputs, volume, DAC options, remote control, etc.)
Custom Universal Signal Isolator shield for the Due (www.dimdim.gr)
Arduino code for TFT display by dimdim (thank you for all his help also), based on the hifiduino code, display design and menus further customised by myself.
TFT display
5v relay (controlled by Arduino turn power supply on/off to Placid HD and Placid HD BP)
2x9V Toroidal Transformer - Placid HD
2x15V Toroidal Transformer - Placid HD BP
2x25V Toroidal Transformer - AMB Sigma11
HiFi2000 case with custom front and rear panels
Inputs - S/PDIF (Coaxial, BNC, Toslink, AES/EBU), USB
RPi Inputs - 2x USB, 1x Ethernet, 1x USB for WiFi Dongle


This was my first real DIY audio project having only started having a go making cables a few months prior. An interest all started when I got a Raspberry Pi and started looking at the possibilities. It was a project which I thoroughly enjoyed and now complete, I miss doing it. Looking at what the next one could be... As you can see from the internal pictures of the build I didn't make it easy for myself, and it is very compact, making the design, planning and coordination quite complex! If I was to do it again I would definitely splash out on the next largest enclosure. However, being the first project I feel I have learned so much (although really just basic skills of soldering, wiring and assembly).

A huge thanks to Twisted Pear Audio, Russ White and Brian Donegan, as well as the other guys on the forum who have helped troubleshoot a number of issues throughout the build, who's advice was invaluable! The B3 Integration Guide by Leon van Bommel was a massive help, thanks to him also who answered my queries on the forum!

Thoroughly pleased with the DAC, for which I truly believe competes with any commercial product I have heard.

[img=https://flic.kr/p/26JYy5A]DAC Front[/img]
[img=https://flic.kr/p/25rkaz2]Front Detail - Volume Knob[/img]
[img]https://flic.kr/p/25rkaXX[/img]
[img=https://flic.kr/p/25rkaXX]Front Detail - Logo[/img]
[img=https://flic.kr/p/JF9oFU]Front with remote and TFT screen on[/img]
[img=https://flic.kr/p/25HnS9N]Rear panel with custom cables[/img]
[img=https://flic.kr/p/JF9oLy]Rear panel[/img]
[img=https://flic.kr/p/JF9pJq]Internal 1[/img]
[img=https://flic.kr/p/25HnT7j]Internal 2[/img]
[img=https://flic.kr/p/JF9p5Q]Internal 3[/img]
[img=https://flic.kr/p/JF9oij]TFT 'Welcome Screen'[/img]
[img=https://flic.kr/p/JF9ojm]TFT Logo / Signature startup screen[/img]
[img=https://flic.kr/p/25HnRsC]TFT 'Home Screen'[/img]
[img=https://flic.kr/p/JF9ofJ]Screen - Input/Settings Menu[/img]

thanks 1 user thanked tdmckellar for this useful post.
asdiasx on 3/25/2019(UTC)
tdmckellar  
#2 Posted : Friday, May 4, 2018 7:59:05 AM(UTC)
tdmckellar

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naa3e5  
#3 Posted : Saturday, June 23, 2018 5:56:26 AM(UTC)
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Beautiful!!! Can you elaborate more on how you did the display?
tdmckellar  
#4 Posted : Sunday, January 27, 2019 3:20:27 PM(UTC)
tdmckellar

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The display is a TFT display controlled by an Arduino Due, which needs a custom shield making for it. The code is based on the hifiduino code. See the links below for more info on the isolator shield and code. This is what I followed for my build. When I got it working I then started customising the graphics in the menu and added the TPA logo on startup.

http://www.dimdim.gr/ard...eld-for-the-arduino-due/

http://www.dimdim.gr/arduino/tft-hifiduino-code/

Edited by user Sunday, January 27, 2019 4:18:27 PM(UTC)  | Reason: Not specified

thanks 1 user thanked tdmckellar for this useful post.
asdiasx on 3/25/2019(UTC)
Possum  
#5 Posted : Tuesday, January 29, 2019 3:42:34 AM(UTC)
Possum

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You might have to pay Russ and Brian royalties for using the TP logo on the LCD :-)
tdmckellar  
#6 Posted : Thursday, January 31, 2019 5:48:02 PM(UTC)
tdmckellar

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I might have to also pay for it being plastered all over the front and back panels as well!... haha
Brian Donegan  
#7 Posted : Thursday, January 31, 2019 6:18:17 PM(UTC)
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Plaster away 😀
asdiasx  
#8 Posted : Friday, April 5, 2019 5:26:48 PM(UTC)
asdiasx

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Originally Posted by: tdmckellar Go to Quoted Post
Completed my DAC / Network streamer and it sounds fantastic!

Custom Universal Signal Isolator shield for the Due (www.dimdim.gr)



Well done! Applause Applause Applause
I got inspired to improve my BIII...

Could you tell me where to buy the Universal Isolator? I found out that there is no link on dimdim1s page to buy it...

Thanks and regards Angel
Possum  
#9 Posted : Friday, April 5, 2019 10:20:44 PM(UTC)
Possum

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If you contact DimDim via his page I'm sure he can help you out there.

If you get stuck I have DipTrace files for I2C isolator and reset pin optocoupler isolator circuits (you need both circuits to isolate the ES9028/38) that you can use to get boards made.

Another option is to use the TPA Hermes-BBB board. It has I2C and I2S isolators (no reset pin isolator tho, but a simple relay will also do the job, and not needed by the ES9018 in any case)

BTW: DimDim's board includes a flash ROM so you can remember settings such as selected input

thanks 1 user thanked Possum for this useful post.
asdiasx on 4/8/2019(UTC)
asdiasxyz  
#10 Posted : Friday, April 5, 2019 11:12:32 PM(UTC)
asdiasxyz

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Originally Posted by: Possum Go to Quoted Post
If you contact DimDim via his page I'm sure he can help you out there.

If you get stuck I have DipTrace files for I2C isolator and reset pin optocoupler isolator circuits (you need both circuits to isolate the ES9028/38) that you can use to get boards made.

Another option is to use the TPA Hermes-BBB board. It has I2C and I2S isolators (no reset pin isolator tho, but a simple relay will also do the job, and not needed by the ES9018 in any case)

BTW: DimDim's board includes a flash ROM so you can remember settings such as selected input



Thanks for the advise... I just tried to contact him... Angel
One reason I'd like to use dimdim solution is that I already have most parts (arduino, tft module) and to take advantage of the flash use... Dancing

Best regards

Adriano
Possum  
#11 Posted : Friday, April 5, 2019 11:20:02 PM(UTC)
Possum

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His page allows you to download the PCB design. You can always send it off to someone like PCBWay to get made
thanks 1 user thanked Possum for this useful post.
asdiasx on 4/8/2019(UTC)
tdmckellar  
#12 Posted : Monday, April 8, 2019 7:29:00 AM(UTC)
tdmckellar

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Yes that's just what I did, downloaded the PCB design then used a website to upload the file and get a number of copies printed. I can't remember which site I used, but it was a fairly reasonable price and didn't have any problems (i've also never done anything like this before!). DimDim also includes a Bill of Materials with Part numbers which are really useful, you can use this to find each bit you need from sites like Mouser, CPC and Farnell.
thanks 1 user thanked tdmckellar for this useful post.
asdiasx on 4/8/2019(UTC)
asdiasx  
#13 Posted : Monday, April 8, 2019 8:24:22 AM(UTC)
asdiasx

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Yep, I'll follow this way...
Thanks!!!
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