ES 9028Q2M + STM 8S103F3

hi there, just read here:->
„it seems that there is already an MCU fitted (ST’s STM 8S103F3) programmed to allow access to some of the es9028 internal hardware functions (volume etc)…“
(additional link->LINK)

guess on the „newer“ ES9028Q2M´s (layout „2017 04 09“) there is this STM 8S103F3 and there is also a 4 pin header (5V+, SWIM,GND, Reset) to program/read out them..(SWIM-interface)

so, now is the question if someone has ever read out that eeprom (on these boards) or re-programed (and with what ?)..
any comments here concerning this topic are really,really appreciated !!

(SWIM->ST-Link-Raspberry Pi-> )

Breadboard Module-> 3.3V/5V Power Supply Module + I2S-„Doubler“

first, an 3.3V/5V Power Supply Module:

(Attention: cable colors not matching perfectly->just for illustration !!)

Breadboard power supply module, compatible with 5V, 3.3V, apply to MB102 breadboard.
Two road independent control, can switch over to 0V, 3.3V, 5V.
On-board two groups of 3.3V, 5V DC output pin, convenient for external lead use.

Input voltage: 6.5-12V (DC) or USB power supply
Output voltage: 3.3V / 5V (switchable)
Maximum output current: < 700mA
Dimension: Approx. 5.3cm x 3.5cm / 2.1″ x 1.4″

10 Pieces ->5,19€ (incl.shipping) !! on ebay-> LINK

wonderful for external (USB-Powering) 5V Hifi-components, such as the ES9023 Board above or par example these things-> (and you can use 2-3 or more components powered by this breadboard power supply !!)


and second such an „I2S“-Doubler; also absolut wonderful and can also be powered via this Breadboard/5V !!

Aliexpress 5,50$ -> LINK 

(Remark: unfortunately not tested here; the breadboard power supply just arrived but havent found the right male-male usb-cable yet, so i have to wait, but i would (will) have had soo much fun with it, i guess 😉 )

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