Raspberry Pico is out !! 4$, 2xI2S, 2xSPI etc../ Twister OS for Pi4

hi there ;-),

found by chance that a new „Raspberry Pico !! “ is out/available..

Cost is about 4$, software is micro-phyton or C/C++, has USB1.1, Dualcore ARM cortex 133mhz, looks like an ESP32-alternative..

some more technical specs->

Mikrocontroller RP2040
• 2 MB QSPI Flash-Speicher,• 256 KB RAM,• 2x 20 I/O Pinleiste (30x GPIO-Pins 3,3V),• ADC 12-Bit 500ksps,• 2x UART / 2x I2C / 2x SPI / 16x PWM
• RTC / Timer mit 4 Alarmen,• Pinabstand: 2,54 mm
• Micro-USB 1.1 für Strom und Datenübertragung

u can get it for example here-> https://www.rasppishop.de/Raspberry-Pi-Pico-RP2040-ARM-Cortex-SBC

and here´s a tutorial how getting started->https://pico.raspberrypi.org/getting-started/

by that, i´ve „discovered“ „TWISTER-OS !!„->absolutely super great (for RPI-4s)..


absolutely super nice + top usable, + absolutely sleeky look, it has tons of software pre-installed (Kodi,VLC-Player,Retro Pie,Steam-client etc..) and the great advantage is still the phenomenal sound (over USB to a xmos-bridge->I2S->ES9038Q2M) because of the short electronical circuits on the board (as mentioned in the article before), absolutely great and for the first time a real good OS for the Raspberry Pi-4 !! (its based on the normal Raspberry OS)

fantastic, give it a try !! 😉

another thing is that i´ve bought now a third pair of speaker (Mission 760i (not SE)) this time and will tell u then more very interesting facts on these Mission-lines (760,780)..wanted originally make a new subsite for it (/mission-speaker) for it..

by that a very interesting site is also this: https://www.hifiengine.com/

https://www.hifishark.com/ (link also in a widget on the right) is a very good adress for „used“ hifi-gear (crawler), cause this is also a „hi-fi website“ 😉 (or is intented to be 😉 )..

more to come „in this fashion“,

greets for now !! 😉

New speaker / little experience-report / Volumio at 2.861 / some new ES9038Pro DACS / Universal USB to I2S Interface Indicator

so, 😉

as i´ve bought some „new“ speaker (Mission Cyrus 780 (one bass driver was defect, had to order some spare from GB)), i´ve had to re-adjust/re-set/re-listen to my hifi in general..

I´ve just bought some AMD Ryzen on some Asus-Board too and so i could test the nowadays „onboard-sound-solutions“ (in this case some Realtek S1220A with 120db SNR) against some „normal CD-transporter“ or some Raspberry PI 4 over USB->I2S to some ES9038Q2M..

Absolutely still no comparison !! ->we forget these onboard-sound now and go directly to the USB->XMOS-USB-Bridge->I2S->ES9038Q2M vs. Raspberry Pi -> XMOS USB-Bridge->I2S->ES9038Q2M thing..

First thought (over PC->XMOS-USB->I2S->ES9038Q2M) these ESSabre-engineers „add/or re-invented“ some really funny/sunny/airy components to the digital stream..absolutely lovely, much „more voluminous“, airier..(these advanced-bitstream-thing))

But after connected to the Raspberry Pi 4 via USB(3.0)->XMOS-USB-Bridge->I2S->ES9038Q2M its still an enermous „lap ahead“, guess its absolutely because of the short electronical circuits on the Pi (less latencies) and the less EMI-interferences on some PI-boards against the „noise“ on some normal PC-mainboards..

So its again some „normal“ CD-transporter (over spdif to some dac/ES9038xx) vs. Pi-4 (for saved media-content)..

Updated my volumio-software on the Pi-4 (now at V2.851), absolutely great, super fast „scrolling“ through the libraries (more CPU-power Pi-4)..


So conclusion for now (again):->forget the soundcard/USB-thing from the PC/MAC->its still about „normal“ CD-transporter vs Raspberry Pi ->USB-bridge->ES9038xxx..

I´ve also bought some Synology DS214Play now->absolutely great, no lags/problems now, absolutely smooth..

by that i´ve found right now by chance these „Arduino-based Universal USB to I2S Interface Indicator“ by dimdim.gr; its here->http://www.dimdim.gr/arduino/universal-usb-to-i2s-interface-indicator/ (+ there are a lot of very interesting infos about sabre+akm-boards in general on this site !!)

thats exactly for what i searched soo long !! (.ino is here->LINK)

also found some new ES9038Pro-DACS on massdrop for example->will post then more about it..

greets for now !! 😉

Raspberry Pi 400 is out !! 70$, 1.8GHZ, 4GB LPDDR4-3200

hi there !!, 😉

hooray !! , the new Raspberry Pi 400 is out !!

Will cost about 70$, u can pre-order it from pimoroni->LINK for example..

very nice, so much things/possibilities to do with !! ..(i think this time i make a real Commodore C64/Amiga emulator with it->see comparison)

Still has the 40 GPIO-Header, 1.8GHZ (a little bit more than normal), has a keyboard general power ON/OFF (Fn+F10) but no audio connector (okay, u should use a usb-soundcard anyway 😉 )..

absolutely nice !! 😉

ESP32-Cam / .ino / Port forwarding / „Solar“-category !!..

so, 😉

have now the time to get a little bit more „in-depth“ with the ESP32-Cam..You can get it meanwhile for 5-6$ from Aliexpress,Bangood etc..(LINK,LINK)

u need an FTDI-programmer for it of course, 1,50$, Ebay->(LINK)

a very good tutorial about setting up the ESP32-Cam, how to connect to the FTDI-programmer + sketch is here->https://randomnerdtutorials.com/esp32-cam-video-streaming-web-server-camera-home-assistant/

the sketch is also very „easy“ (see on randomnerdtutorials) and for „flashing“ u only need to set a jumper on IO0+GND (and remove it afterwards of course 😉 )..The .ino/sketch is also here->(LINK)

the picture-quality is a little bit better that u might expect in the worst case 😉 and now i use the ESP32-cam directly over (DHCP)-WLAN connected and display it in a browser (simple IP-adress in the bar) or via some dyndns-provider (use here spdyn.de in Germany)..

u only need to port forward (90 to 80 for example) it directly to the device..

very nice thing, use a raspberry pi zero wh as a webserver, mqtt-broker „in between“ and will also use then some ESP32 for solarpanel-control/measure the current from the batteries and display it on a website/handy etc..

more to come..also ordered some „step up module“ to easier power them with 5V/2 cables“, Ebay,->(LINK)

by that i made a new „category“ (on the right)->“SOLAR“ 😉 ..i will post there anything about 5V/12V solar-panels, autotracking them etc. !! all with some Arduinos,ESP32,Raspis etc..very much more to come,

(above picture + description is from : http://b04forum.dl3ndd.de/viewtopic.php?f=18&t=365)

but many greets from here !! 😉 (but no worry->essabre-90xx-rpi.sfb2.com will stay absolutely more hifi-related !! 😉 )

DIY-DAC: Telekom Media Receiver 303A as case/with 12V/3A power supply->as audio-streamer with Rpi4 + XMOS-USB-bridge + ESP32 as display-controller..

so, 😉

i´ve found a few days ago some „withdrawn from service“ 😉 Telekom (uarghh ;-( )  Media Receiver 303A->was first interested in the internal HDD->500GB Seagate, but have seen then this has also a built-in 12V/3A power-supply and its from the dimensions almost ideally as some Raspberry Pi4-ES9038Q2M-audiostreamer !! (not soo big) 😉

Display-wise its a little bit limited (due to the available space (height)) in the front, but some LCD1602 will maybe do it fine..

found then an easy way to connect some to an ESP32 via I2C and via some „web-remotes“ (see other posts here „Project-1“ etc..) we can select via some photocoupler/relais the inputs of the ES9038Q2M (Coax,Toslink, I2S/USB), adjust the hardware-volume, filter-selection and so on and can display the settings on the display/LCD1602) !!

so far so fine, but this is a heck of a lot work to do !! 😉 ..

(i´ve planned to use Volumio on the raspberry ->easy controlling via the web-interface, DLNA-capable, MPD etc..)..

as said, here at first testing-out some aspects/parts for it and a first result by example is that these 3A makes the „blue“ ES9038Q2M absolutely a little bit „airy(ier); had before some 2A power supply (12V)..

by that the „Leaf-XMOS-USB-bridge“ (->http://essabre-90xx-rpi.sfb2.com/?p=2066) is better than first thought..

+ also my new „ESP32“ will come to a new life 😉  (not to mention the Raspberry Pi4 2GB)

makes really a lot of fun here, and i will inform you about some further improvements !!

greets for now !! 😉


Raspberry Pi 4B 2GB arrived / Volumio now at V2.714

so, 😉

finally the Raspberry Pi 4B 2GB arrived here->still an improvement in sound-quality and clarity..less jitter, more exact due to more processor-power and when u first power on your raspberry (here with an XMOS-bridge and then via I2S to an ES9038Q2M) u really got the the feel that the Pi is made for music !! 😉 (i think its also because of the short electronical circuits on the board, absolutely low latencies))..

absolutely fantastic, beats absolutely a lot of other DAC/PC/USB-combinations, wonderful 😉

fired it up with Volumio V2.714, its now with a changed UI->https://volumio.org/get-started/

plays here DSD256 without any problems (see other posts here for configuring Volumio with an XMOS-bridge)..->

and because the Pi 4B has finally a Gbit-Lan + USB3.0 (and more Ram + processor-power) its makes now so much fun to browse through your media-libraries and play it („instant“), great 😉

nothing else special, particular by now but many greets and stay tuned 😉

New Skysong-/SMPCB ES9038Q2M-boards + addons..

so 😉 ,

found by chance these new ES9038Q2M-boards..normally i don´t like the other/new boards different from the „green“ SMPCB, V1.06-V1.07 but there are some interesting details with it..

First, on the new, blue SMPCB they use some „DS9281“ for „better coaxial conversion, less jitter, less „lock“-problems, „better coaxial line“, like we know before that the original coaxial-line is not the best->link here->http://essabre-90xx-rpi.sfb2.com/?p=2058 and here->http://essabre-90xx-rpi.sfb2.com/?p=1833 , tags AK4118-receiverchip + SRC4192

Link Aliexpress/Ebay(35$)->https://de.aliexpress.com/i/32860202632.html?spm=a2g0x.12057483.0.0.580c31f9766Lc9

second, as said, i don´t like any other ES9038Q2M than the old green SMPCB, „Skysong“ from which had these phenomenal XMOS-USB-Bridge (see other posts before) also made a new ES9038Q2M with a lot of LEDs for the frequency-rate etc..(maybe these i would buy and only because they made such a great xmos-bridge)

Link Ebay/Aliexpress(44$ and up)->LINK

third, there are also some CSR8675-bluetooth->I2S-solutions->(with aptX, LDAC etc..)

Link Ebay/Aliexpress (29$ and up)->https://de.aliexpress.com/item/32860202632.html?spm=a2g0x.12057483.0.0.47897ef2tKiCRj

fourth, i still want to buy next a „Topping D50S“ (have to wait a little bit) and next month a Raspberry Pi4 with 2GB and still search some toroidal transformer 15V-0-15V for the green ES9038Q2M here..

more to come and greets for now !! 😉


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