ESP32 Dock with TAS5805M I2S DAC, driving 2x 23W loadDesigned by Sonocotta in Poland
What is it Louder ESP Audio Dock is a combination of external I2S DAC capable to drive full size speakers (I mean grown up home stereo) and PSRAM chip. This combination provides your compact ESP32 mo…Read More…
Louder ESP Audio Dock is a combination of external I2S DAC capable to drive full size speakers (I mean grown up home stereo) and PSRAM chip. This combination provides your compact ESP32 module with both the necessary memory and capabilities to develop Hi-Fi products.
Over the past few years, I dedicated my time to developing various solutions using ESP devices. It all began with the ESP8266, which had limited CPU power, restricting it to basic tasks like simple sound alerts. However, with the arrival of the ESP32, everything changed. This new model brought two significantly more capable cores, providing a powerhouse for handling communication and real-time decoding simultaneously. Furthermore, the inclusion of 4MB of PSRAM proved to be crucial, enabling effective buffering for streamed content.
I developed a diverse selection of ESP32 docks that allow for rapid prototyping across the entire spectrum of ESP32 chips. These docks cater to various needs, ranging from small, compact devices resembling toys to large, full-sized speakers. The Louder ESP is a high-end Hi-Fi powerhouse, offering top-of-the-line performance and capabilities.
|ESP Audio Solo||ESP Audio Duo||Hifi ESP||Louder ESP|
|Docks with||ESP8266, ESP32C3, ESP32S2 Mini modules||ESP32 Mini Module||ESP32 Mini Module||ESP32 Mini Module|
|DAC||Single I2S DAC (MAX98357) with built in D-Class amp||Dual I2S DAC (MAX98357) with built in D-Class amp||PCM5100A 32bit Stereo DAC -100 dB typical noise level||Stereo I2S DAC (TAS5805M) with built in D-Class amp|
|Output (4Ω)||3W||2x 3W||Non-amplified stereo output||2x 15W at 12V Vin|
|Output (8Ω)||1.5W||2x 1.5W||Non-amplified stereo output||2x 23W at 22V Vin|
|Adds||8MB PSRAM (4MB usable)||8MB PSRAM (4MB usable)||8MB PSRAM (4MB usable)|
Audio streaming require proper buffering to work, even with ESP32 500K of RAM it is a challenging task. For that reason most of the projects will require WROVER modules that have onboard PSRAM chip.
lOUSER esp has 8MB PSRAM chip onboard, connected via high-speed SDIO interface. This effectively turns your regular WROOM module into WROVER module with no effort required. Any code using PSRAM with just work out-of-the box.
|I2S CLK||I2S DATA||I2S WS||PSRAM CE||PSRAM CLK||TAS5805 SDA||TAS5805 SCL||TAS5805 PWDN||TAS5805 FAULT|
In the software section two firmware examples provided.
All samples are provided as Plarformio IDE projects. After installing it, open sample project. Select proper environment based on your dock. Run
Upload commands to install necessary tools and libraries, build and upload prject to the board. Communication and proper upload method selection will be handled by IDE automatically.
Follow the ESP8266Audio library guide. Default settings will work out of the box with ESP8266 and ESP32 boards. For ESP32C3 and ESP32S2 board please adjust pinout according to the above section
Squeezelite-ESP32 is a multimedia software suite, that started as renderer (or player) of LMS (Logitech Media Server). Now it is extended with - Spotify over-the-air player using SpotifyConnect (thanks to cspot) - AirPlay controller (iPhone, iTunes ...) and enjoy synchronization multiroom as well (although it's AirPlay 1 only) - Traditional Bluetooth device (iPhone, Android)
And LMS itself - Streams your local music and connect to all major on-line music providers (Spotify, Deezer, Tidal, Qobuz) using Logitech Media Server - a.k.a LMS with multi-room audio synchronization. - LMS can be extended by numerous plugins and can be controlled using a Web browser or dedicated applications (iPhone, Android). - It can also send audio to UPnP, Sonos, ChromeCast and AirPlay speakers/devices.
Use Squeezelite-ESP32 installer to flash firmware first.
|Connect device to USB port and select if from the list|
|(Optional) You may enter serial console to get more information|
|Device is in recovery mode. Connect to
|When redirected to captive portal let device scan wifi network and provide valid credentials|
|You can use provided IP address (http://192.168.1.99/ on the screenshot) to access settings page|
|ESP Audio Duo, HiFi-ESP Navigate to Hardware section and provide following updates in the DAC Options DAC model:
|["Louder ESP"] Navigate to NVS Editor section and provide following updates dac_config:
|(Optional) You may change device names to something close to you heart|
You can use it now
|Bluetooth||Spotify Connect||AirPlay||LMS Renderer|
Please visit hardware section for board schematics and PCB designs. Note that PCB are shared as multi-layer PDFs.
|(Rev A)||TAS5805M DAC Speaker Terminals 8MB PSRAM IC 3V3 Drop-Down voltage regulator (powers ESP32) Input Voltage terminal|
|(Rev B)||TAS5805M DAC Speaker Terminals - 8MB PSRAM IC (Hidden under ESP32 module) - 3V3 Drop-Down voltage regulator (powers ESP32, hidden under ESP32 module) Input Voltage terminal|
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