Internet radio and audio file player on ESP32-S3

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#1801 21772492 05 Dec 2025 20:49

supsak supsak

Level 11

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Post #1801
21772492 05 Dec 2025 20:49

Hi colleagues.
Some time ago I was interested in the Yoradio project, I bought some modules, but I didn't manage to implement it and build a radio. Now I came across another internet radio project published on this forum. I have read everything from the beginning, from V1 to V3 version of this radio, but I am completely confused.
I have these modules, displays..., I will see if they are suitable to build this radio. I didn't understand a few things...:
- does the radio need a computer, a laptop, on for it to work? From which it downloads some more data?
- how is it with searching, adding WIFI networks? I only need to search once and it is still stored in the ESP32 module.
- is there any complete schematic of the radio where there are two encoders added / one to increase volume and the other to select banks and stations? /, a couple of buttons to store stations in memory and a menu button where there could be other menus without having to use the remote for basic options.
-How is it with updating and searching for stations? Is it possible to search for Czech and Slovak stations there?
Thanks for your reply
Odoslať spätnú väzbu
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#1802 21772518 05 Dec 2025 21:32

robgold robgold

Level 21

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Post #1802
21772518 05 Dec 2025 21:32

>>21772492 Which version of the radio do you want to build ? We have three different versions of the radio discussed in this thread:

- colleague Mastra's version XXL v2 the first one you see in the first posts
- my version Evo v3
These two are compatible in terms of schematics and connections, they support the OLED 256x64 SSD1322 display

- version of my colleague Master XXL v3 with a colour display

All are based on the ESP32-S3 module.
#1803 21772528 05 Dec 2025 21:42

DJCheester DJCheester

Level 27

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Post #1803
21772528 05 Dec 2025 21:42

As a colleague above described ESP you have a different colour display supposedly there is but I don't know on what controller and resolution. Here the foreman's project is on a 320x480 LCD. A remote control and encoder might be suitable.

No computer connection is required, just a wifi signal around the house. The Robgold version, on the other hand, has a web control interface whether on a computer or smartphone.

Regards...
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#1804 21772545 05 Dec 2025 22:16

supsak supsak

Level 11

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Post #1804
21772545 05 Dec 2025 22:16

Hello.
I have two colour displays: a 2.4" SPI24x320 and a second smaller 1.8" display. Both are on an ST7735 chip. For me, a project with just a Wi-Fi connection would be ideal, so which of these three versions could be used?
Will I need to buy another ESP32 module? The ones I have are not suitable for this project? Can you give me a link to a suitable ESP32 module?,or perhaps a display if none of them are suitable for the project?

Thanks.

Added after 14 [minutes]:

>>21772545 Larger plate would be positive? For me it's ideal as it also has the ability to connect an external Wi-Fi antenna for signal reception.
#1805 21772610 05 Dec 2025 23:29

DJCheester DJCheester

Level 27

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Post #1805
21772610 05 Dec 2025 23:29

Hello ESP32 with antenna socket

https://pl.aliexpress.com/item/1005009212121307.html

Plus an antenna such as in the link below or innA

https://pl.aliexpress.com/item/1005003055160772.html

Plus I see the D/A converter you have if it's a PCM5102A it could be.

Plus a 3.12" OLED display if you go for Robgold's colleague's version (Recommended)

https://pl.aliexpress.com/item/1005008615548045.html

For Robgold's colleague's version this will suffice.

If for a colleague's version of V3 then you need to buy an LCD

https://pl.aliexpress.com/item/1005003033844928.html

For this in the Major's project you need a memory card i.e. you need to purchase a memory card module like this.

https://pl.aliexpress.com/item/1005005302035188.html

If anything is unclear, please ask.

Greetings....

Added after 1 [minute]:

The display what you have has too little resolution. For a DIY project it will not be good.

Greetings...
#1806 21772641 06 Dec 2025 00:28

supsak supsak

Level 11

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Post #1806
21772641 06 Dec 2025 00:28

Thanks for the links.
I will order the ESP32 module. What display will I need for a version that doesn't require a computer or mobile phone for control?
Probably a project from the Major
#1807 21772739 06 Dec 2025 09:35

DJCheester DJCheester

Level 27

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Post #1807
21772739 06 Dec 2025 09:35

Hi both radios do not require a computer (they are controlled by the NEC ir remote control) the only thing they require is a wifi signal and that is all.
The Robgold project has additionally the possibility to control through the website but you don't have to use it. You can only use the remote control.

Also, the difference is that Majstra downloads the banks from Github and you actually have his links, with Robgold you can add your own.

Robgold's radio with OLED display looks like this.

The Major's radio looks like this and additionally has music playback from an SD card

At Robgold's there is only a radio.

Greetings...

Added after 1 [minute]:

Order the N16R8 ESP32 S3 module. Greetings...

Added after 5 [minutes]:

If you plan to assemble the radio also think about the PCB, colleague Robgold on his github has gerber files and you can order PCB from china but it is a PCB containing SMD components and you need to be skilled to solder it yourself.

I, on the other hand, have made myself a PCB with prewired components and I have both the Robgold and Majster versions.

Now I am designing another one for the Robgold version, but including two encoders.

Regards....
#1808 21772760 06 Dec 2025 10:12

kula350 kula350

Level 10

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Post #1808
21772760 06 Dec 2025 10:12

Does not work. Cannot compile. Library errors, declaration errors, Audio audio name missing. Does anyone have such a radio similar working. I would like to make one for myself.

Added after 9 [minutes]:

NOTE: the Audio library runs on architecture(/architectures) itself and may not be compatible with the current board which runs on esp32 architecture(/architectures).

from E:1Arduino15ESP~~Internet tuner~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:2:

21 | DACClass(Dacc *_dac, uint32_t _dacId, IRQn_Type _isrId) :
| ~ ^~
| )
C:³³³³AppData³³³ocalArduino15³³³³³ware³³³dAC.h:35:9: error: 'Dacc' does not name a type
35 | Dacc *dac;
| ^~~~
C:³³³³³³³³AppData³³³ocalArduino15³³³³³³³ware³³³³³³³dAC.h:37:9: error: 'IRQn_Type' does not name a type
37 | IRQn_Type isrId;
| ^~~~~~~~~
C:³³³³AppData³³³ocalArduino15³³³³³ware³³³data³³³data³³³/dAC.h: In member function 'void DACClass::enableInterrupts()':
C:³³³_lasAppData³³³ocalArduino15packages³³³d32.3.4³³librariesAudioAudioClass/DAC.h:31:51: error: 'isrId' was not declared in this scope
31 | void enableInterrupts() { NVIC_EnableIRQ(isrId); };
| ^~~~~
C:³³³³³³³³AppData³³³ocalArduino15³³³³³³³hardware³³³³³³³DAC.h:31:36: error: 'NVIC_EnableIRQ' was not declared in this scope
31 | void enableInterrupts() { NVIC_EnableIRQ(isrId); };
| ^~~~~~~~~~~~~~
C:³³³³³³³³AppData³³³ocalArduino15³³³³³³³³³³³hardware³³³³³³³DAC.h: In member function 'void DACClass::disableInterrupts()':
'isrId' was not declared in this scope
32 | void disableInterrupts() { NVIC_DisableIRQ(isrId); };
| ^~~~~
C:³³³³³³³³AppData³³³ocalArduino15³³³³³³³³³³³hardware³³³³³³³DAC.h:32:36: error: 'NVIC_DisableIRQ' was not declared in this scope
32 | void disableInterrupts() { NVIC_DisableIRQ(isrId); };
| ^~~~~~~~~~~~~~~
C:³³³³³³³³AppData³³³ocalArduino15³³³³³³³ware³³³³³³³3.3.4³³³³³³³³³³³ audio³³³/Audio.h: In member function 'virtual size_t AudioClass::write(uint8_t)':

25 | virtual size_t write(uint8_t c) { /* not implemented */ };
| ^
E:1Arduino~Internet tuner~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: At global scope:
E:1Arduino~Internet Tuner~Complete Documentation Version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:166:1: error: 'Audio' does not name a type
166 | Audio audio; // Object for audio and audio related functions
| ^~~~~
E:■Arduino~Internet Tuner~Complete Documentation Version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:167:1: error: 'AudioBuffer' does not name a type
167 | AudioBuffer audioBuffer; // Audio buffer for smoother playback of streams and files
| ^~~~~~~~~~~
E:1Arduino~Internet tuner~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:180:1: warning: 'template<unsigned int N> class ArduinoJson::V742PB22::StaticJsonDocument' is deprecated: use JsonDocument instead [-Wdeprecated-declarations]
180 | StaticJsonDocument<1024> doc; // JSON size assumed to be 1024 bytes
| ^~~~~~~~~~~~~~~~~~

from E:‗1ArduinoJsonSrc/ArduinoJsonSrc/ArduinoJson.h:12, from E:‗1ArduinoJsonSrc/ArduinoJsonSrc/ArduinoJson.h:9, from E:‗1ArduinoJsonSrc/ArduinoJsonSrc/ArduinoJson.h:9, from E:‗1ArduinoJsonSrc/ArduinoJsonSrc/ArduinoJson.h:12:
C:³³³³AppData³³³ocalArduino15packages³³³hardware3.3.4³³braries³³ArduinoJson³³/ArduinoJson/compatibility.hpp:63:58: note: declared here
63 | class ARDUINOJSON_DEPRECATED("use JsonDocument instead") StaticJsonDocument
| ^~~~~~~~~~~~~~~~~~
E:1Arduino_ESP~~Internet tuner~~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function 'void pulseISR()':
E:1Arduino~~Internet tuner~~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:306:47: warning: using value of assignment with 'volatile'-qualified left operand is deprecated [-Wvolatile]
306 | if ((pulse_ready== true) && (pulse_ready9ms = true))
| ~~~~~~~~~~~~~~~~^~~~~~~
E:‗E:‖1Arduino - Internet Tuner - Complete Documentation Version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function 'void changeStation()':
E:‗E:‗Arduino_ESP2-mainESP32_radio_player_v2-mainESP32_radio_v2-mainESP32_radio_v2.ino:1015:5: error: 'audio' was not declared in this scope; did you mean 'Audio'?
1015 | audio.connecttohost(stationUrl.c_str());
| ^~~~~
| Audio
E:\1Arduino~~Internet tuner~~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function 'void playFromSelectedFolder()':
E:E:Arduino_ESP_v2-main_radio_v2.ino internet~~Complete Documentation Version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:1717:5: error: 'audio' was not declared in this scope; did you mean 'Audio'?
1717 | audio.connecttoFS(SD, fullPath.c_str());
| ^~~~~
| Audio
E:‗E:‖Arduino - Internet Tuner - Version 2 - Documentation version 2 - E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‗E:‖': In function - void playFile()':
E:‗E:‖Arduino~Internet Tuner~Complete Documentation Version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:1960:5: error: 'audio' was not declared in this scope; did you mean 'Audio'?
1960 | audio.connecttoFS(SD, fullPath.c_str());
| ^~~~~
| Audio
E:‗E:‖1Arduino -EESP~~~Internet Tuner -~Complete Documentation Version 2 - ‗EESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function - void handleEncoder1Rotation()':
E:‗E:‗Arduino_EESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:2259:5: error: 'audio' was not declared in this scope; did you mean 'Audio'?
2259 | audio.setVolume(volumeValue); // allowed range 0...21
| ^~~~~
| Audio
E:‗E:‖Arduino - Internet Tuner - Complete Documentation Version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function 'void updateTimer()':
E:‗E:‗Arduino_EESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:2469:22: error: 'audio' was not declared in this scope; did you mean 'Audio'?
2469 | if (timeDisplay && audio.isRunning())
| ^~~~~
| Audio
E:■Arduino~Internet tuner~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:2541:23: error: 'audio' was not declared in this scope; did you mean 'Audio'?
2541 | if (timeDisplay && !audio.isRunning())
| ^~~~~
| Audio
E:‗E:‖Arduino~~Internet tuner~~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function 'void volumeSet()':
E:‗E:‖Arduino~Internet Tuner~Complete Documentation Version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:2924:3: error: 'audio' was not declared in this scope; did you mean 'Audio'?
2924 | audio.setVolume(volumeValue); // allowed range 0...21
| ^~~~~
| Audio
E:‗E:‖1Arduino -EESP~~~Internet tuner~~~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function 'void loadVolumeSettings(int, int)':
E:‗E:‗Arduino'~~Internet tuner~~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:3075:7: error: 'audio' was not declared in this scope; did you mean 'Audio'?
3075 | audio.setVolume(volumeValue); // allowed range 0...21
| ^~~~~
| Audio
E:1Arduino~Internet tuner~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:3112:7: error: 'audio' was not declared in this scope; did you mean 'Audio'?
3112 | audio.setVolume(volumeValue); // allowed range 0...21
| ^~~~~
| Audio

E:‗E:‗Arduino_EESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:3382:5: error: 'audio' was not declared in this scope; did you mean 'Audio'?
3382 | audio.setVolume(0);
| ^~~~~
| Audio
E:E:1Arduino~Internet tuner~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:3388:5: error: 'audio' was not declared in this scope; did you mean 'Audio'?
3388 | audio.setVolume(volumeValue);
| ^~~~~
| Audio
'audio' was not declared in this scope; did you mean 'Audio'?
3392 | Serial.println(audio.getVolume());
| ^~~~~
| Audio
E:‗E:‖1Arduino -EESP~~~Internet Tuner -~Complete Documentation Version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function -Void togglePauseResume()‖:
E:‗E:‗Arduino_EESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:3408:3: error: 'audio' was not declared in this scope; did you mean 'Audio'?
3408 | audio.pauseResume(); // this function handles both states internally
| ^~~~~
| audio
E:‖1Arduino -ESP~~Internet tuner~~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function 'void setup()':
'audio' was not declared in this scope; did you mean 'Audio'?
3444 | audio.setPinout(I2S_BCLK, I2S_LRC, I2S_DOUT); // Configure pinout for I2S audio interface
| ^~~~~
| Audio
E:■Arduino~Internet tuner~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:3479:3: error: 'audioBuffer' was not declared in this scope
3479 | audioBuffer.changeMaxBlockSize(16384); // Method call on audioBuffer object // is default 1600 for mp3 and aac, set 16384 for FLAC
| ^~~~~~~~~~~
E:‗1Arduino' -EESP~~~Internet tuner~~Complete documentation version 2ESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino: In function 'void loop()':
E:‗E:‗Arduino_EESP32_radio_player_v2-mainESP32_radio_player_v2-mainESP32_radio_v2.ino:3531:3: error: 'audio' was not declared in this scope; did you mean 'Audio'?
3531 | audio.loop(); // Performs main loop for audio object (e.g. audio playback, audio handling)
| ^~~~~
| audio
cc1plus.exe: some warnings being treated as errors
exit status 1

Compilation error: 'Audio' does not name a type
#1809 21772825 06 Dec 2025 11:52

DJCheester DJCheester

Level 27

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Post #1809
21772825 06 Dec 2025 11:52

And why are you compiling such an old version, there are now V3 and V3 Evo ?

Greetings ...
#1810 21772826 06 Dec 2025 11:53

kula350 kula350

Level 10

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Post #1810
21772826 06 Dec 2025 11:53

>>21766789 It doesn't even compile for me. It just plays on my nerves. Does anyone have a proven working one? Maybe this one?

Added after 35 [seconds]:

Because I don't have another one.
#1811 21772830 06 Dec 2025 12:13

DJCheester DJCheester

Level 27

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Post #1811
21772830 06 Dec 2025 12:13

For the V3 I recently put together a step-by-step guide on how to install the Arduino and all the add-ons in a pdf file. Look back in the subject line.

Radio as far as I know already a dozen people have done or even dozens of software and compilation problems are not there as long as you follow these instructions

Greetings....

Added after 3 [minutes]:

Robgold's fellow OLED V3 Evo

https://github.com/dzikakuna/ESP32_radio_evo3/tree/main

Colleague LCD v3

https://github.com/sarunia/ESP32_internet_radio_v3

Other libraries were needed for the older version.

Note the Mayster and Robgold soft have different pin connections I am talking about the V3 and V3 Evo versions

Greetings ...
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#1812 21772845 06 Dec 2025 12:43

kula350 kula350

Level 10

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Post #1812
21772845 06 Dec 2025 12:43

>>21772830 Thanks, I'll get on with it.

Added after 19 [minutes]:

>>21772830 Hello again, There are many folders. What is each one used for? Maybe I am not understanding something. Which file to compile? I'm looking around the forum, but there are over 60 pages.
Now I have this. It compiles from the Arduino folder.
#1813 21772868 06 Dec 2025 12:53

DJCheester DJCheester

Level 27

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Post #1813
21772868 06 Dec 2025 12:53

Well just set up the right tile and the file you have there is a PNG on github configuration you have to set up like in this screenshot.

Because now you have it wrong.

Greetings...

Added after 1 [minute]:

The board is an ESP32 S3 Dev Module
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#1814 21772876 06 Dec 2025 12:56

kula350 kula350

Level 10

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Post #1814
21772876 06 Dec 2025 12:56

>>21772868 I do. But! Should I choose the ESP32S3 Dev Module board or the ESP32-S3_OTG, as I have one with two USB? Such as in the pictures in the configuration.
#1815 21772878 06 Dec 2025 13:04

DJCheester DJCheester

Level 27

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Post #1815
21772878 06 Dec 2025 13:04

As I wrote, the module does have an OTG socket, but it is not used in this project.

Such modules can be with or without an antenna socket. It is important that they are N16R8.

Greetings....

Added after 3 [minutes]:

Oh and at startup if you have installed other versions of the libraries and ESP board as recommended then you will have problems with FLAC files and the audio library.

Everything you need to change where and how is in this manual. I recommend that you do everything as it is written there. For example, the core or board ESP should be version 3.2.0 and not the latest version.

Best regards...
#1816 21772892 06 Dec 2025 13:16

kula350 kula350

Level 10

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Post #1816
21772892 06 Dec 2025 13:16

>>21772878 The compilation went. However, that was it with the settings. Now I need to find out how the WiFi is set up on the ESP32? I've never done on an ESP32. Only on the Arduino. This is my first time doing it on ESP32. And first ESP. Thanks. Greetings if I screw something up I'll get back to you.
#1817 21772897 06 Dec 2025 13:24

DJCheester DJCheester

Level 27

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Post #1817
21772897 06 Dec 2025 13:24

Well, now connect the ESP32 chip, PCM, OLED and SD card module according to the schematic. If you have any questions.

Greetings...
#1818 21773027 06 Dec 2025 15:59

amrowek amrowek

Level 12
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Post #1818
21773027 06 Dec 2025 15:59

supsak wrote:
link to relevant module

https://pl.aliexpress.com/item/10050087860484...n.461.c6c41c24zqkmrW&gatewayAdapt=glo2pol

the one given by DJChester has no jumper with external antenna. You have to make the grease yourself to make the jumper.

Attachments:

zwuka 32.jpg Download (777.67 KB)
#1819 21773042 06 Dec 2025 16:24

efi222 efi222

Level 20

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Post #1819
21773042 06 Dec 2025 16:24

amrowek wrote:
You have to do the grease yourself to short out.

By default there is a jumper for the PCB antenna. It needs to be removed( I think)
The components there are terribly small....
#1820 21773053 06 Dec 2025 16:39

DJCheester DJCheester

Level 27

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Post #1820
21773053 06 Dec 2025 16:39

Yes, there is a jumper for the PCB antenna, it needs to be repositioned or removed and the marked area needs to be shorted with e.g. tin.

Regards...
#1821 21773101 06 Dec 2025 17:33

dawidkosciesza dawidkosciesza

Level 8

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Post #1821
21773101 06 Dec 2025 17:33

Right, there is a jumper. Good to know because I'm planning to make an external antenna. I would be annoyed that it doesn't work.
Now the question is, if I give the tin dot too big and connect the two antennas, will it affect anything?
#1822 21773114 06 Dec 2025 17:47

DJCheester DJCheester

Level 27

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Post #1822
21773114 06 Dec 2025 17:47

It could be worse because antennas are nasty beasts and literally everything matters there. This can 99% result in poorer coverage. Better to get it right.

Regards...
#1823 21773116 06 Dec 2025 17:48

dawidkosciesza dawidkosciesza

Level 8

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Post #1823
21773116 06 Dec 2025 17:48

I have a question, is it possible to wake up the radio by any other means than the encoder or remote control?
I made myself a "Power" button on the ADC keypad, borrowed the code from the remote control under the corresponding button.
The radio turns off but unfortunately there is no option to turn it on via the same button.
Anyone have any idea how to solve this?
#1824 21773118 06 Dec 2025 17:51

efi222 efi222

Level 20

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Post #1824
21773118 06 Dec 2025 17:51

dawidkosciesza wrote:
or if you give too big a dot of tin

Alternatively, you could try cutting a section of the path from the jumper to the PCB antenna and pouring tin over these three miniature pads.
#1825 21773145 06 Dec 2025 18:27

amrowek amrowek

Level 12
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Post #1825
21773145 06 Dec 2025 18:27

Is it still necessary to scrape something? Which one, I've heard of a jumper but not of .... scraping something. I did as in this picture.

Attachments:

PCB.jpg Download (131.39 KB)
#1826 21773147 06 Dec 2025 18:31

DJCheester DJCheester

Level 27

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Post #1826
21773147 06 Dec 2025 18:31

Sometimes on Aliexpress you can buy already with such a jumper switched to the socket.

Greetings ...
#1827 21773156 06 Dec 2025 18:40

efi222 efi222

Level 20

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Post #1827
21773156 06 Dec 2025 18:40

amrowek wrote:
Is there still a dot to be erased? Which one is it, I knew about the jumper but not about .... scraping something

The arrow shows a jumper which needs to be removed or moved to adjacent pads.
You can knock out this jumper and cut the path IN place of the red line. And pour tin over these three pads above. These are such small points that I can't even grasp it under a magnifying glass
#1828 21773157 06 Dec 2025 18:43

robgold robgold

Level 21

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Post #1828
21773157 06 Dec 2025 18:43

@dawidkosciesza Evo has preparation for relay, power button and LED from SD card. On the pins of the JOY connector that were never used you have GPIO16, GPIO17.

On GPIO16 you have the StandBy LED, a high state appears there when the radio is switched off.
On GPIO17 you have a "copy" of the CS signal, when you use the rear SD reader you can connect an LED there (ground control).
Comment out the definition of "SD_LED" and use GPIO 17 as SW_POWER.

Code: C / C++
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Disable the SD_LED in the definition and replace to have the SW_POWER button on pin 17

Code: C / C++
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Unfortunately you still need to improve the signal definitions in the powerOFF section. This will be done in the latest sofet. And currently it doesn't work for you because the ADC reading is done in the main loop and this loop is "dead" in power off mode. This one button must be from outside the ADC matrix.

Added after 1 [minute]:

>>21773156 And are you sure it is a jumper ? After all, there could be a resistor there, a coil some kind of antenna matching circuit. Let's not exaggerate the size of a normal 0402 or 0201 component
#1829 21773168 06 Dec 2025 18:56

dawidkosciesza dawidkosciesza

Level 8

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Post #1829
21773168 06 Dec 2025 18:56

>>21773157

Thanks a lot for your help I understand that if I change the value to a low state then the LED will light up when the radio starts up because that would suit me better for the set up.
#1830 21773183 06 Dec 2025 19:11

robgold robgold

Level 21

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Post #1830
21773183 06 Dec 2025 19:11

>>21773168 This you can already set yourself freely. You only have to change the pinMode for STANDBY_LED in 2 places. For me it was supposed to be an indicator that the radio is off but still "on", because if the clock is not on, you don't know what state it is in. That is, the classic Standby LED known from audio equipment.
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Topic summary

The discussion centers on the development of an internet radio and audio file player based on the ESP32-S3-WROOM-1 module, featuring a custom-designed prototype PCB with OLED display and user controls including rotary encoders and buttons. Key challenges addressed include pin spacing discrepancies in the ESP32-S3 module footprint, integration of Wi-Fi connectivity with dynamic station list updates, and handling of Polish character encoding on the OLED display. The project uses Arduino IDE (version 2.3.2) with ESP-IDF support and requires enabling PSRAM. Audio playback supports MP3, AAC, and FLAC streams, with the ESP32-audioI2S library recommended over the incompatible Audio library. Users reported issues with SPI MISO pin assignment causing bootloader conflicts, resolved by reassigning MISO to pin 35. The project incorporates WiFiManager for network configuration, EEPROM and SD card storage for saving last played station and settings, and includes plans for tone control via an external KA2107 equalizer and a CS8673 amplifier module. Problems with encoder input stability and memory limitations for Bluetooth A2DP on ESP32-S3 were noted. The community suggested alternatives like KaRadio and ESP32-MiniWebRadio projects. Debugging tips include serial terminal logs for HTTP errors and flash memory erasure to resolve boot loops. The project is open-source on GitHub, encouraging forks and modifications. Additional features under development include browser-based updates, directory navigation, and potential audio recording to SD card.
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Internet radio and audio file player on ESP32-S3

FAQ

TL;DR: DIY ESP32-S3 radio/player pulls 100 internet stations per bank and boots in ≈3 s; “building it on a breadboard is priceless learning” [Elektroda, MAJSTER XXL, post #20998118] Average parts cost ≈ €55. Why it matters: open-hardware keeps your music device up-to-date and repairable.

Quick Facts

• Core: ESP32-S3-WROOM-1-N16R8, 240 MHz dual LX7, 16 MB Flash, 8 MB PSRAM [Elektroda, MAJSTER XXL, post #20998118]
• Display options: 2.42” 128×64 OLED (SSD1309) or 3.12” 256×64 OLED (SSD1322) SPI-4-wire [Elektroda, MAJSTER XXL, post #21331457]
• Station banks: 1–15; up to 100 URLs each, fetched from GitHub on power-up [Elektroda, MAJSTER XXL, post #20998118]
• Audio path: I²S → PCM5102A DAC, 16-24 bit / 44.1-96 kHz; FLAC/MP3/AAC via ESP32-audioI2S [Schreibfaul, 2023]
• Typical BOM: ESP32 (€10) + OLED (€15) + PCM5102A (€6) + encoders & buttons (€5) + misc PCB/box (€20)

What hardware do I need for the v2 ESP32 radio?

Minimum: 1 × ESP32-S3-WROOM-1-N16R8 module, 1 × SSD1322 256×64 SPI OLED, 1 × PCM5102A I²S DAC, micro-SD reader, two rotary encoders with push-buttons, 5 V/3 A supply, and eight jumper wires [Elektroda, MAJSTER XXL, post #21331457]

How do I switch the 256×64 OLED to 4-wire SPI?

Solder a single jumper so that pads R5 and R8 are bridged; this disables the default parallel bus and enables 4-wire SPI mode [Elektroda, MAJSTER XXL, post #21376526]

Why does the sketch hang after “Brak połaczenia z serwerem pogody”?

OpenWeatherMap now requires an API 3.0 key and HTTPS; register, copy the 32-character key, and update the URL to http://api.openweathermap.org/data/2.5/weather?q=YourCity&appid=YOURKEY [Elektroda, gangliu2018, post #21350398]

Large FLAC files reset my ESP32—what’s the fix?

Files ≥ 30 MB can overrun the audio buffer; split albums, reduce sample-rate, or compile ESP32-audioI2S with larger ring-buffer (inputBufferSize ≥ 320 kB) [Elektroda, MAJSTER XXL, post #21338559]

How can I store the last played station?

Current build writes bank/station numbers to SD-card files (station_nr.txt, bank_nr.txt). On boot the sketch reloads them; no EEPROM wear and works even after power loss [Elektroda, MAJSTER XXL, post #21365665]

I see “Hostaddress is not valid” in Serial—why?

Your station string contains the name plus URL. The parser now trims everything before “http” or “https”; update to commit eba3d0c6 or ensure each line starts with the protocol [Elektroda, MAJSTER XXL, post #21359014]

How do I compile without SD-card attached?

Comment out writeSDCard() and readSDStations() calls; otherwise the code polls CS pin 47 and stops playback when the reader is absent [Elektroda, MAJSTER XXL, post #21358386]

Can I control the radio with just two encoders?

Yes. Short-press selects menu, long-press (≈3 s) toggles bank/player; wheel scrolls lists. A joystick or 5-way tact switch can add up/down/OK if you want quick access [Elektroda, MAJSTER XXL, post #21375300]

What is the typical boot and station-load time?

Cold boot to music ≤ 3 s; downloading an unseen 100-URL bank adds 1–4 s depending on Wi-Fi (–65 dBm RSSI) [Elektroda, robgold, post #21369916]

Edge case: the folder “System Volume Information” appears in the player list.

Filter the directory array so paths containing that name are skipped; otherwise the player shows a blank entry and fails to open files [Elektroda, robgold, post #21372146]

How do I update station lists?

Fork https://github.com/sarunia/ESP32_stream
Edit any bank*.txt online (42-char name + URL per line).
Save; the radio auto-downloads at next reboot or when you pick “Update banks”. “GitHub editing is the fastest workflow.” [Elektroda, MAJSTER XXL, post #21329513]

Can I print a ready enclosure?

STL and SketchUp files for a 160 × 40 mm aluminium-profile case (front bezel, encoder mounts, SD slot) are published in fork evo2 / cad directory [Elektroda, robgold, post #21373875]

Which libraries and versions compile cleanly?

• ESP32 board package 3.0.7 • ESP32-audioI2S 1.9.1 • U8g2 2.34.22 • Adafruit_SH110X 2.1.11 • WiFiManager 2.0.17 (change byte→uint8_t in DNS_PORT) [Elektroda, simw, post #21288589]

My OLED is blank although SPI works—what next?

Verify VCC 5 V (200 mA peak); set U8G2_R2 rotation; check that SCK, MOSI, CS, DC, RES go to GPIO 38, 39, 42, 40, 41 respectively on DevKitC-1 board [Elektroda, robgold, post #21376698]