DIY-Audio – Seite 4 – ES Sabre-90xx-Rpi

Audiophonics: ES9038Q2M on sale (50€) + some techn. description..

Januar 28, 2018 admin Ein Kommentar

so, 😉
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 😉

Link-tip: dimdim.gr->very, very interesting articles about 9028/38pro-chips, STM32F103C8T6/Arduino – Audio in general..

Januar 16, 2018 admin Kommentar hinterlassen

so, 😉
although i´ve got the feel that this site is well known by a lot of people, here again:
http://www.dimdim.gr
its mainly known for the TFT-Hifiduino code, but there are meanwhile very,very interesting articles about Audio-DIY; for example a very good tutorial to bring this STM32F103C8T6-“Bluepill” to work->
http://www.dimdim.gr/2017/01/stm32-microcontrollers/

(picture courtesy/copyright http://dimdim.gr)
or maybe this new article/post:”Arduino controlled Dual Mono AK4490 DAC (Part 2)”->
http://www.dimdim.gr/2017/12/arduino-controlled-dual-mono-ak4490-dac-part-2/
(picture courtesy/copyright http://dimdim.gr)

take a look there->very interesting (and basically the same “topics” as here 😉 )

DIY-DAC: Display Audio-params->already there->HiFiDuino-TFT../too complicated at present..

Januar 15, 2018 admin Kommentar hinterlassen

so, 😉
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 ——————————————————————————
#ifdef 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 😉

ES9038Q2M: Fresh delivered (unfortunately not to me), DSD-lock-light, DIY-DAC easy wiring/example II..

Januar 9, 2018 admin Kommentar hinterlassen

ES9038Q2M->absolute easy wiring possibility with normal “Volt-Jack” DC 15V

Dezember 19, 2017 admin Kommentar hinterlassen

(PS.: but beware, u have probably to “unsolder” 2 jumper/bridges..depends on you delivered version (+15V/-15V or only +15V) )

Little Status-update: ES9028Q2M->Volume Buttons (works !!) + LEDs (works not..)

Dezember 11, 2017 admin 2 Kommentare

so,
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..)