thought about the power supply (+15V or +/- 15V) for the ES9038Q2M (or the other Chinese-Boards, its basically the same); my bought,”normal” 220V adjustable power supply has only 12V DC max and so i thought about another way; had a month ago a power supply for a Thinkpad T43, 19V i think, was sold and got today a HP power supply (for some printer)->32V..
2 (4) possibilities: either u buy directly a power supply from amazon/ebay/aliexpress->3$ and up
or use an old, unneeded one, like this HP one for printer for example, or laptop or something and buy a cheap “Step Down Power Regulator/Module” from Aliexpress (of about 1,50$ and up)-> https://de.aliexpress.com/item/1pcs-5A-High-power-75W-DC-DC-adjustable-step-down-module-LED-Voltmeter-Power-supply-module/32688669737.html
Input Voltage (this modul) 4-38V DC
Output Voltage 1,25-36V DC
Ampere max. 4A..
i read elsewhere that the ES9038Q2M only needs about ca. 500mA..so normal laptop or printer power supplies should be enough (this HP power supply has 625mA)
cut off the plug, and so u have your 2 wires to connect to your power step down module (or directly), adjust the right output voltage and wire it with 2 lines/cable up to the ES9038Q2M; easy as this 😉
(BUT, soundwise its really,really better to use a toroidal dual 15V transformer like this (25$)-> https://de.aliexpress.com/item/115-V-230-V-30-Watt-R-typ-transformatoren-Dual-15-V-Dual-6-V-ausgang/32833217523.html)
(or the ultimate HiFi-High End choice would be a “battery-pack”; for example a bike-battery 😉 😉 (12$+charger)
but for the “cheap”-beginning the above choice should be enough.. 😉
hi there, 😉
came by chance about this “Forum-Idea”; its absolutely Beta and looks horrible (just a test if it will be accepted)..
One advantage is that u dont have to be registered; but you can also post/open a thread..
lets see if it will work out..
(Categories are (for now): ES9038Q2M, ES9028Q2M, ES9018K2M, Hifi-Dacs, STM32F103C8T6, RPI 3B, Drivers, etc..)(more maybe to come))
(http://essabre-90xx-rpi.sfb2.com/forum/) (theres also a link in the header)
(PS.: but beware, u have probably to “unsolder” 2 jumper/bridges..depends on you delivered version (+15V/-15V or only +15V) )
“Sat in your “lab”” 😉
(an allusion to Kate Bushs “Sat in your lap”) 😉
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.”
again some pictures from the above mentioned Skysong-XMOS-XU208 in “action”: 😉
(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/ )