came here by chance to a new very interesting ES9038Q2M-forum->
some interesting pics/news on it, par example that the Green 1.06 has 7805 instead of 7808 on it and so on 😉 ->
by that, there is also a link to a 9038Pro-DAC (DACES9038PRO) designed by Andrea Ciuffoli/Quang Hao + a lot of interesting infos around the schematics of the sabre-chips->http://www.audiodesignguide.com/DACES9038PRO/
greets for now 😉
because its a little bit silent around here lately, we still don´t know if the „Blue“ ES9038Q2M has a „shitty“ pcb and the „green“-ones sounds better, i have still buffer/“lock“-problems in windows using the V4.36 Singxer-driver on the Skysong-XMOS-USB in sample rates above 16/44 i wanted to use the onboard-HW-volume control, to which u can connect a normal 10kOhm-potentiometer (see pictures) easy..
i tested it here, and it works far not so good as expected and i guess u have a very small range of about 20% or so (in my feel) too..
i thought i could easy use the Arduino with analogwrite () and connect one pin to the middle of the onboard-3 pin but what i´ve read so far is that the Arduino can only send out PWM-signals so u need an external digital potentiometer (thats what i´ve read so far, don´t know if its true) and control it via the (in this case) SPI-bus/protocol..
for this u can buy a cheap MCP, in this case a MCP4131 of around 0,89€ and a Dip-8 socket (0,51€) etc.,etc..(more to come..)
(very good tutorial for this right now:
i will post here any „improvements“ (and (maybe) a full tut) asap..!! 😉
for the european „Sabre-Lover“ ;-), Audiophonics.fr has now also our ES9038Q2M „on sale“(50€)..(LINK)
seems its almost identical with our „green-boards“ here;
they have also +15V DC plug on it, so i guess its PCB 1.04 minimum/upwards..
(User „Zek“ (thx a lot!) here from the forum means:“..This board has an additional regulator for a 5V pin and an additional capacitor (in the middle).“(see comments).
by that there are also some pics with more technical details..(and as said, these „solder/unsolder“-thing)
by that, Audiophonics has also a toroidal transformer „Transformer Toric 30VA 2x15V“ (LINK) on sale for only 17,90€ which seems to be ideal for our ES9038Q2M-boards..
(and a wonderful „wiring/installation“-tutorial/pictures for these torodial-transformer->http://forum.audiophonics.fr/viewtopic.php?t=389)
check it out 😉
after listening for days through this super phenomenal Skysong-XMOS-USB-ES9018K2M-Combo (a really hifi-upgrade by 10-15%) i came back to my STM32F103-„Bluepill“/Arduino project to build your own DAC/display audio-parameter (Input,sample-frequency and so on)..
and i knew there was already such a project and it was !!!!
its the HiFi-Duino-TFT-Project on http://www.dimdim.gr/arduino/tft-hifiduino-code/ !!! (based on the famous/original HiFi-Duino-project/code; is well known)
and here->Universal USB to I2S Interface Indicator->http://www.dimdim.gr/arduino/universal-usb-to-i2s-interface-indicator/
after reading the documentation about it, our „F0,F1,F2,F3,DSD-on etc“-schematics became a really new sense->they were already used by this above mentioned code for example and also in conjunction with the Anamero-Combo-boards..look here->
the code looks like this->
// —————————- Amanero ——————————————————————————
* I1 = F0
* I2 = F1
* I3 = F2
* I4 = F3
* I5 = DSD_ON
* I6 = DSD 64 or 128
// Check for PCM or DSD
if (digitalRead(I5) == false) // PCM detected
type = 0;
if (digitalRead(I1) == false && digitalRead(I2) == false && digitalRead(I3) == false && digitalRead(I4) == false)
SR = 32;
else if (digitalRead(I1) == true && digitalRead(I2) == false && digitalRead(I3) == true && digitalRead(I4) == false)
SR = 176.4;
else if (digitalRead(I1) == true && digitalRead(I2) == true && digitalRead(I3) == true && digitalRead(I4) == false)
SR = 352.8;
else if (digitalRead(I1) == false && digitalRead(I2) == false && digitalRead(I3) == false && digitalRead(I4) == true)
SR = 384;
and so on !! burner 😉 ..
you can get the sketch here->Link or via the forum (http://essabre-90xx-rpi.sfb2.com/forum/); i will upload it there later too..
so to see, the absolute breakthrough i would say 😉
but this are only „teaser“; for me its absolute to complicated right now/at present and i don´t know if i continue to „walk on this way“/have the time for it in the near future but for introduction..
greets for now 😉
(PS.: but beware, u have probably to „unsolder“ 2 jumper/bridges..depends on you delivered version (+15V/-15V or only +15V) )
a little Status-update concerning this article->http://essabre-90xx-rpi.sfb2.com/2017/11/dsd-led-volume-and-fir-buttons-on-these-es9028q2m-boards-diy/
I´ve connected a 4-dip Button and i can confirm that it works !!…for the Vol+ and the Vol- square..thought the bottom (left on the picture) 4pin-square is for the FIRs (digital filter settings), but apparently not..
(PS.: and it sounds very good !! (absolute better than per software/-mixer !!))
(Edit: to be correct->its not really a HW-mixer/volume control; it only just increases the „internal“ volume „in“ the chip; but it has really, super interesting effects on the output; think its only a change by 40% (up and down) or so; but very interesting !!, u must try it by yourself)
so the only last 4pin square is the „input“-one..cause i have no other inputs and mainly dont know where to connect on this board, this question stays unanswered..
The LEDs on the other side (PCM and DSD) stay dark/nothing..tried a lot..
by that, maybe in future i can read out the MCU on this ES9028Q2M via the „SWIM“-interface, because the ST-LinkV2 which i actually bought could/should also be used for 8bit/this MCUs..
(Edit 11/12/2017): tried to read out the onboard MCU STM 8S103F3 via the „SWIM“-interface and with a ST-Link V2->didnt got it to work too; always a „St-Link-USB communication error“; so long for now..)
here´s another, fresh, ES9038Q2M-forum-link: http://www.diyaudio.com/forums/digital-line-level/314935-es9038q2m-board.html
by that i´ve found some further, interesting pictures concerning the „targeted“ DIY-DAC !! 😉
first, i´ve found another ES9038Q2M-chinese-board with a 15V (DC)-plug->
second here´s also again a little „picture“-description“ how to connect a „DSD„-Led to a XMOS-Usb-Bridge.. 😉
and third, heres a picture how to connect a bluetooth-receiver-modul (CSR-8670/8675) directly to an ES9028Q2M (in this case) via I2S..