Atomic Audio Base with M5ATOMS3R

jimruxton — Wed, 22 Apr 2026 04:32:05 GMT

I have been able to get a program to work that uses the M5EchoBase library but no luck using the unified library. For example the simple program below doesn't work. #include void setup() { // 1. Initialize M5Unified delay(1000); // Delay for a moment to allow the system to stabilize. auto cfg = M5.config(); cfg.serial_baudrate = 115200; M5.begin(cfg); // 2. Configure the Speaker for the Atomic Audio Base (ES8311) // We access the speaker configuration directly via M5.Speaker.config() auto spk_cfg = M5.Speaker.config(); // Set pins for Atomic Audio Base (ES8311) spk_cfg.pin_bck = 8; // BCLK spk_cfg.pin_ws = 6; // LRCK (WS) spk_cfg.pin_data_out = 5; // DAC (DOUT) spk_cfg.i2s_port = I2S_NUM_0; // Configure for external codec (not internal DAC) spk_cfg.use_dac = false; spk_cfg.sample_rate = 44100; // Apply the configuration M5.Speaker.config(spk_cfg); // 3. Start the speaker M5.Speaker.begin(); // 4. Set volume (0-255) M5.Speaker.setVolume(128); } void loop() { M5.update(); // Play a 1000 Hz tone for 1000 milliseconds (1 second) M5.Speaker.tone(1000, 1000); // Wait for the tone to finish delay(1000); // Small delay before next loop delay(1000); } Is there no way to set up the ES8311 codec without using M5EchoBase? strangely if I run the program below then load the above program the tone works? But I can't stick the M5.Speaker.tone(1000, 1000); command in the program below and have it work. Does anyone know how to play a tone using only the Unified library from an AtomS3R into a Atomic Audio Base (ES8311 codec)? #include #include #if defined(CONFIG_IDF_TARGET_ESP32S3) #define RECORD_SIZE (1024 * 400) #elif defined(CONFIG_IDF_TARGET_ESP32) #define RECORD_SIZE (1024 * 400) #endif #if (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)) M5EchoBase echobase; #else M5EchoBase echobase(I2S_NUM_0); #endif static uint8_t *buffer = nullptr; // Pointer to hold the audio buffer. void setup() { delay(1000); // Delay for a moment to allow the system to stabilize. auto cfg = M5.config(); cfg.serial_baudrate = 115200; M5.begin(cfg); // Initialize the EchoBase with ATOMS3 pinmap. #if defined(CONFIG_IDF_TARGET_ESP32S3) if (!echobase.init(44100 /*Sample Rate*/, 38 /*I2C SDA*/, 39 /*I2C SCL*/, 7 /*I2S DIN*/, 6 /*I2S WS*/, 5 /*I2S DOUT*/, 8 /*I2S BCK*/, Wire) != 0) { Serial.println("Failed to initialize EchoBase!"); while (true) { delay(1000); } } #elif defined(CONFIG_IDF_TARGET_ESP32) // Initialize the EchoBase with ATOM pinmap. if (!echobase.init(44100 /*Sample Rate*/, 25 /*I2C SDA*/, 21 /*I2C SCL*/, 23 /*I2S DIN*/, 19 /*I2S WS*/, 22 /*I2S DOUT*/, 33 /*I2S BCK*/, Wire) != 0) { Serial.println("Failed to initialize EchoBase!"); while (true) { delay(1000); } } #endif echobase.setSpeakerVolume(80); // Set speaker volume to 70%. echobase.setMicGain(ES8311_MIC_GAIN_0DB); // Set microphone gain to 0dB. buffer = (uint8_t *)malloc(RECORD_SIZE); // Allocate memory for the record buffer. // Check if memory allocation was successful. if (buffer == nullptr) { // If memory allocation fails, enter an infinite loop. while (true) { Serial.println("Failed to allocate memory :("); delay(1000); } } Serial.println("EchoBase ready, start recording and playing!"); // M5.Speaker.tone(2000, 2000); // delay(2000); } void loop() { Serial.println("Start recording..."); // Recording echobase.setMute(false); echobase.record(buffer, RECORD_SIZE); // Record audio into buffer. delay(100); Serial.println("Start playing..."); // Playing echobase.setMute(false); delay(10); echobase.play(buffer, RECORD_SIZE); // Play audio from buffer. //M5.Speaker.playRaw(buffer, RECORD_SIZE, 44100, false, 1, 0); delay(100); }

Paper S3 epub reader with usb disk mode

erikbotta — Wed, 18 Feb 2026 16:39:36 GMT

@L4700 Hi. Thx for testing. Frankly project happened just for me, because I have so many eReader but none was so light. Now I bought next Paper S3 device to my wife is my new tester :D. Future is unsure, for me - there's possibly all I need. And for others - there's slow feedback. What I am thinking about : HW improve - still trying to figure out some fancy Screen illumination fo this HW. Wifi portal for transfering books - USB disk mode is very slow, and removing SD card is akward. Sync readering with other readers (maybe Calibre, not sure now) Optimization (MCU is slow, but I see still some potencial. Secondly thinking about future porting to newer models - but it will need some donations to buy new HW. Until this time I have just one donate from my boss :D Sry for my English.

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