many thx to „Janos_904“ over at the Diyaudio.com-forum->http://www.diyaudio.com/forums/digital-line-level/314935-es9038q2m-board-3.html?s=b2de8136b3f09c3da9f11088b3614efb
there is a new pic + description:
->“My board have just arrived ! I was surprised, because of the fast shipment and the very good quality. It is so much better than the cheapo ES9018K2M board. There are good quality smd components, and the module comes with Nichicon FW (yellow/black) and Elna RW3 (brown) capacitors. The consumers of the DAC chip are isolated well (see red circles). There are plenty of upgrades available for DIY-ers! I installed a Superreg instead of the KA7808 reg, and +/- 15 V superregs for the opa. The sound with 3 superregs using coax is good, full with live, and detailed even with the stock JRC5532DD.“
Programming-Subkurs I: IR-Receiver -> Raspberry Pi / + „Project 1“: Cambridge Audio Azur 540A Remote
because this site is all about „Building your own DIY-DAC“ 😉 (and audio in general) i just new invented a new category: Programming (Rpi+STM32) + „Projects“-> in this case „Project 1 – building your own Cambridge Audio Azur 540A Remote“ 😉
okay, got a wonderful IR-Receiver+Remote-Set (HX1838) from Aliexpress today->0,78€ !! (inkl.shipping)->Link
and have here at home an „Cambridge Audio Azur 540A“ – Amplifier..
(really good sound (more maybe later), got almost everyday better 😉 )
but with a really horrible, horrible IR-Remote->i have to point to from 1cm away 😉 ), so i thought i build an own ir-modul (receiver and transmitter) with this DIY-things and a STM32F103C8T6 „Bluepill“..
long story short: tried to setup LIRC on a RPI according to this TUT->https://tutorials-raspberrypi.de/raspberry-pi-ir-remote-control/
bu there was no output in the console..googled a lot and the solution is->“LIRC not working on Raspbian Stretch Raspberry Pi“->
„## 0.9.4 disruptive update
The configuration is so much changed that updating from 0.9.0 requires
manual intervention. This could be done using the update scripts or as
a completely manual process. Many users will always need some manual steps“
another thing is, its not a .sh file (as wrongly described) , but a python one, so->“sudo python3 lirc-old2new„..
(now it works..)
(more to come..)
(this (above) should be (explanation at the bottom) „PCM„/“384khz„)
according to the primary post->http://essabre-90xx-rpi.sfb2.com/2017/11/skysong-xmos-usb-xu208/ and this „Singxer Q1-Diagramm“ theres the fourth Led in the upper right a „PCM/DSD“ indicator (and not what i´ve written „Power“-indicator->u have to zoom in the picture)
(more information in the original post->http://essabre-90xx-rpi.sfb2.com/2017/11/skysong-xmos-usb-xu208/ )
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..)
because there are here so many searches concerning „Moode Audio“-image here´s a „install-script“ for an almost automated install->moode-automatic-install
its from the „official“ Moode-/supportforum->http://www.diyaudio.com/forums/pc-based/271811-moode-audio-player-raspberry-pi-1160.html
and there´s also a new „driver“-package for the Audiophonics ES9028Q2M linux-kernel 4.9.51..it came across via the „Volumio“-forum because the hardware-volume wasnt working for the new Volumio-releases..(but this is absolute „Audiophonics ES9028Q2M-related because they implemented this „HW-Volume-control“)..->Q2M_kernel_4-9-51
but another thing is, if i look in the archive there are such „i-sabre-codec.co and i-sabre-k2m.dtbo“ files which can be used for the Q2Ms too, and so somebody have to/could try to use them/modify to take the full advantages (and higher sampling-rates) out of these ES9028Q2M/ES9018K2M-chips..
any experiences/results->please leave a comment here..
got yesterday my STM32F103C8T6 (earlier post)->diy-stm32f103c8t6-blue-pill-oled-tft-display/
1,55€ (inkl.shipping)->Aliexpress -> Link
first->its smaller than i expected (see 2.picture) and its very „friggling“..
i thought, no problem, i use my Pi, wire it up like in some Youtube-Videos, use the Arduino IDE and begin to upload a sketch etc..
but:„Wasn´t“ ; )..got always a „STM32flash -> „Device init failed„
(use btw. first my USB-serial adapter with RX,TX and ground->Arduino said:“Device not recognized“)..
googled through a thousand STM32-Arduino-forum/threads, millions of hours, and the final conclusion is:
Buy a ST-Link V2 !! -> 1,68€ Aliexpress -> Link
directly from the beginning (with a STM32F103C8T6)->strongly adviced/recommended from my side here too !! 😉
(hope this will do the trick !! (toi,toi,toi->german phrase)) 😉