AiKoder S3 LCD - Complete Hardware Documentation

[iuridomingos]

Hello, friends!
I recently purchased this Xiaozhi ESP32 project from AliExpress. The hardware is excellent, but the company severely limits Xiaozhi's capabilities. I've searched the repository and there's no firmware available for this specific board.
I spent an entire day investigating and reverse-engineering all possible hardware information, and I managed to gather quite a lot of useful data.
I would like to know if anyone is interested in compiling a "clean" Xiaozhi firmware for this board.
Below are all the hardware details I've collected. Thank you very much!

AiKoder S3 LCD - Hardware Configuration

Documentação extraída do firmware original da placa.

---

📋 Board Information

Board: aikoder-s3-lcd
Version: 2.0
Chip: ESP32-S3
Cores: 2
Flash Size: 8MB
Minimum Free Heap: [check at runtime]
IDF Version: [from firmware]

---

🔌 GPIO Pinout (Extraído do Firmware)

Display - JD9853 (SPI)

MOSI (SDA)     : GPIO38
SCK (SCLK)     : GPIO39
CS             : GPIO40
DC             : Not specified in firmware
RESET          : Not specified in firmware
Backlight      : GPIO13 (PWM)
Resolution     : 240x240
Interface      : SPI3_HOST, 40 MHz

Touch - CST816D (I²C)

Address        : 0x15
SDA            : [To be determined via I²C scan]
SCL            : [To be determined via I²C scan]
INT            : Not specified
RESET          : Not specified

Audio - ES8311 Codec

I²C Control Bus:

Address        : 0x18
SDA            : GPIO2  ✓ Confirmed
SCL            : GPIO1  ✓ Confirmed

I²S Audio Data Bus:

BCLK           : GPIO17 ✓ Confirmed
WS (LRCK)      : GPIO18 ✓ Confirmed
DOUT (Speaker) : GPIO8  ✓ Confirmed
DIN (Mic)      : GPIO7  ✓ Confirmed
MCLK           : GPIO16 (optional)
Sample Rate    : 16 kHz (default), supports up to 24 kHz
Bits per Sample: 16-bit

Power Control:

PA Control     : GPIO3 (Power Amplifier Enable - must be HIGH)
Headphone Det  : GPIO3 or GPIO40 (needs confirmation)

System

Boot Button    : GPIO0
Battery ADC    : GPIO9 (ADC1_CH8)
Charging Det   : GPIO10 (optional)

---

📝 Configuration Strings (from firmware)

Display Settings

display        : [enabled]
brightness     : [0-100, configurable]
theme          : light/dark
rotation       : 0/90/180/270

Audio Settings

codec          : ES8311
sample_rate    : 16000 (or 24000)
volume         : [0-100]

---

⚙️ Hardware Features (from firmware strings)

Supported Protocols

• WiFi: 802.11 b/g/n (2.4GHz)

  • Modes: Station, AP, Auto
  • Encryption: Open, WEP, WPA-PSK, WPA2-PSK, WPA2-ENT, WPA3-SAE, etc.

• Bluetooth: Supported (BT_MAC, BT_BB)

• I²C Buses: Multiple (I2C_MASTER, I2C_EXT0, I2C_EXT1)

• SPI Buses: SPI1, SPI2, SPI3

• I²S: I2S0, I2S1 (audio interfaces)

Peripherals

- UART0, UART1, UART2
- LEDC (PWM channels)
- TWAI (CAN bus support)
- USB (serial-jtag)
- SDIO_HOST
- GPIO (including GPIO_NMI)
- PCNT (pulse counter)
- RMT (remote control)
- ADC (analog inputs)
- Timers (TIMER1, TIMER2, SYSTIMER)

---

🔧 Partition Table

Label          Type       Subtype    Address      Size
nvs            data       nvs        [address]    [size]
otadata        data       ota        [address]    [size]
phy_init       data       phy        [address]    [size]
model          [type]     [subtype]  [address]    [size]
app            app        [subtype]  [address]    [size]

---

📚 Firmware Modules

Core Components

• esp_system: System initialization and power management
• heap: Memory allocation (DRAM, IRAM, RTCRAM, SPIRAM/PSRAM)
• nvs: Non-volatile storage
• esp_hw_support: Hardware support (clocks, interrupts, GPIO)
• freertos: Real-time operating system
• esp_timer: High-resolution timers
• newlib: C standard library
• pthread: POSIX threads

Communication

• esp_netif: Network interface
• lwip: TCP/IP stack
• esp_wifi: WiFi driver
• esp_event: Event loop
• mqtt: MQTT client
• esp_http_client: HTTP client
• esp_https_ota: OTA updates

Peripherals

• driver/gpio: GPIO control
• driver/i2c: I²C master/slave
• driver/spi: SPI master
• driver/i2s: I²S audio
• driver/ledc: PWM/LED control
• driver/uart: Serial communication
• esp_lcd: LCD panel interface (including JD9853 support)

Graphics

• LVGL: GUI library (esp_lvgl_port)
• esp_lcd_jd9853: JD9853 display driver

Audio

• ES8311: Audio codec driver
• i2s: I²S interface for audio streaming

Storage

• esp_partition: Partition management
• nvs_flash: NVS operations
• spiffs: File system

---

🚀 Arduino IDE Configuration

Board: ESP32S3 Dev Module
Upload Speed: 921600
USB CDC On Boot: Enabled
CPU Frequency: 240MHz (WiFi)
Flash Mode: QIO 80MHz
Flash Size: 8MB
PSRAM: OPI PSRAM
Partition Scheme: Default 4MB with spiffs (or custom)
Core Debug Level: None

---

📦 PlatformIO Configuration

[env:aikoder-s3-lcd]
platform = espressif32
board = esp32-s3-devkitc-1
framework = arduino

board_build.mcu = esp32s3
board_build.f_cpu = 240000000L
board_build.flash_mode = qio
board_build.psram_type = opi

board_upload.flash_size = 8MB

build_flags = 
    -DBOARD_HAS_PSRAM
    -DARDUINO_USB_CDC_ON_BOOT=1
    
    # Audio I²C (Confirmed)
    -DES8311_SDA=2
    -DES8311_SCL=1
    
    # Audio I²S (Confirmed)
    -DI2S_BCLK=17
    -DI2S_WS=18
    -DI2S_DOUT=8
    -DI2S_DIN=7
    -DI2S_MCLK=16
    
    # Power Control
    -DPA_CTRL=3
    
    # Display
    -DLCD_MOSI=38
    -DLCD_SCK=39
    -DLCD_CS=40
    -DLCD_BL=13

monitor_speed = 115200

---

⚠️ Important Notes

Audio ES8311

• I²C Bus: SDA=GPIO2, SCL=GPIO1 ✓ CONFIRMED
• I²S Bus: BCLK=17, WS=18, DOUT=8, DIN=7 ✓ CONFIRMED
• PA Control: GPIO3 must be set HIGH to enable audio amplifier
• Chip Address: 0x18 (7-bit I²C address)
• The ES8311 requires initialization via I²C before audio playback

Display JD9853

• Uses SPI3_HOST interface
• 240x240 resolution
• Backlight controlled via PWM on GPIO13
• The command JD9853: The 3Ah command has been used appears in logs

Touch CST816D

• I²C address: 0x15
• Exact I²C pins need to be discovered via scanning
• Possible pins: GPIO4/5 or GPIO6/7

Power Management

• Battery monitoring: GPIO9 (ADC1_CH8)
• Calibration scheme detected in firmware
• Sleep modes supported

---

🔍 Firmware Strings Reference

Key strings found in firmware that may be useful:

"aikoder-s3-lcd"
"Duplex channels created"
"Es8311AudioCodec initialized"
"Display: Power management not supported"
"Backlight: Set brightness to %d"
"Battery level"
"Entering Wi-Fi configuration mode"

---

📖 Extracted Information Summary

✅ Confirmed Hardware

• ESP32-S3 with 8MB Flash, 2MB PSRAM
• JD9853 display controller (240x240 SPI)
• ES8311 audio codec (I²S + I²C)
• CST816D capacitive touch (I²C)

✅ Confirmed Pins

• ES8311 I²C: SDA=2, SCL=1
• ES8311 I²S: BCLK=17, WS=18, DOUT=8, DIN=7
• PA Control: GPIO3
• Display: MOSI=38, SCK=39, CS=40, BL=13
• System: Boot=0, Battery=9

❓ To Be Confirmed

• Touch I²C pins (SDA/SCL)
• Display DC and RESET pins
• Headphone detection pin
• Additional GPIO functions

---

📄 Source

Information extracted from firmware.bin and system logs provided by the user.

Last Updated: November 2025

[zwaetschge]

Thanks for sharing. Got one of those too. seller sent me the Selena firmware, but so far i had no luck bringing the screen to work outside of the original firmware.

[sisop12]

I also tried to run this Chinese clone, but I only managed to get the backlight working...

[alexmi256]

I also got one recently because ESP32 + screen + battery for $9 seemed like a good deal.
What did you use to extract this information?
Do the UART pins give any additional access?

Here is a picture of my board that I've lighten up for easier trace identification

I also think the LCD resolution is wrong. Similar JD9853 LCDs are 240x296. By looks, I thought it was a ST7789W3-G6 but firmware is probably more accurate.

Here is what I got so far:

(venv) [alex@um780real esptool]$ esptool --chip esp32s3 --port /dev/ttyACM0 flash-id
esptool v5.1.0
Connected to ESP32-S3 on /dev/ttyACM0:
Chip type:          ESP32-S3 (QFN56) (revision v0.2)
Features:           Wi-Fi, BT 5 (LE), Dual Core + LP Core, 240MHz, Embedded PSRAM 2MB (AP_3v3)
Crystal frequency:  40MHz
USB mode:           USB-Serial/JTAG
MAC:                28:37:2f:f8:44:70

Stub flasher running.

Flash Memory Information:
=========================
Manufacturer: 68
Device: 4018
Detected flash size: 16MB
Flash type set in eFuse: quad (4 data lines)
Flash voltage set by eFuse: 3.3V

[nalc]

Onde arranjo o firmware para essa board?

[alexmi256]

I uploaded my full 16MB firmware to https://github.com/alexmi256/ai-voice-xiaozhi/tree/main/firmware if you were curious.

[v4vendetta]

Are there any new?

[bms-w]

Hi. I have the same device. It's annoying because of its limitations, voice timbre, visual animations, and so on =)
I made a firmware backup. I tried deleting the NVS memory area with 0x9000 and length 0x4000 in the hopes that Xiaozhi would send a new 6-digit code to the device after WiFi registration, allowing me to gain control of the assistant. No, it didn't, but the device ID changed. I rolled back my firmware because with the new ID, I might not be able to receive the firmware over the air (if it ever happens). ¯_ (ツ)_/¯

[nalc]

Just sendo this mail with subjet
Unbind Device and Device ID, MAC Address to xiaozhi.ai@tenclass.com
This a original firmware send by seller:
https://drive.google.com/file/d/159eBBVeg4x6HrqNdna0XfCWqaKgHMB7Y/view?usp=drivesdk

[nalc]

You need ask to the Jarvis the device ID

[nalc]

In any case, even after gaining access to xiaozhi.me, customization is limited. It only allows voice customization!

[bms-w]

And if you try here (if you have the six-digit code)
http://platform.samewayai.com:12401

[nalc]

My firmware is not compatible with samewayai.com

[alexstudiodj]

Мені написав штучний інтелект прошивку під цю плату, хтось вміє перевірити його? Бо я в цьому нічого не розумію, але каже що використовував дані пінів від цьої плати)

/* JARVIS UA - Full main.c

• ESP32-S3, ST7789, I2S mic/speaker, WS2812, IP5306
• Wake-word "Джарвіс", Vosk-uk STT, MQTT to HA
  */

#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_mqtt_client.h"
#include "esp_spiffs.h"
#include "driver/gpio.h"
#include "driver/i2s.h"
#include "driver/spi_master.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_vendor.h"
#include "esp_lcd_panel_ops.h"
#include "cJSON.h"

// CONFIG
#define WIFI_SSID "name"
#define WIFI_PASS "password"
#define MQTT_BROKER "mqtt://192.168.x.x" // ЗАМЕНИТЕ НА IP ВАШЕГО HA
#define MQTT_USER "mqtt"
#define MQTT_PASS "mqtt"
#define HA_TOKEN "token"

// PINS (from GitHub discussion)
#define I2S_MIC_BCK GPIO_NUM_4
#define I2S_MIC_WS GPIO_NUM_5
#define I2S_MIC_DATA GPIO_NUM_6
#define I2S_SPK_BCK GPIO_NUM_7
#define I2S_SPK_WS GPIO_NUM_8
#define I2S_SPK_DATA GPIO_NUM_9
#define LCD_SPI_MOSI GPIO_NUM_19
#define LCD_SPI_CLK GPIO_NUM_18
#define LCD_CS GPIO_NUM_5
#define LCD_DC GPIO_NUM_16
#define LCD_RST GPIO_NUM_23
#define LED_WS2812 GPIO_NUM_48
#define BUTTON_BOOT GPIO_NUM_0

static const char *TAG = "JARVIS_UA";
static esp_mqtt_client_handle_t mqtt_client;
static int device_count = 0;

// HA device list
typedef struct {
char id[128];
char name_ua[128];
} ha_device_t;
static ha_device_t devices[100];

// MQTT HANDLER
static void mqtt_event_handler(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
{
esp_mqtt_event_handle_t event = event_data;
switch (event->event_id) {
case MQTT_EVENT_CONNECTED:
ESP_LOGI(TAG, "MQTT connected");
esp_mqtt_client_subscribe(mqtt_client, "homeassistant/+/+/config", 0);
esp_mqtt_client_subscribe(mqtt_client, "jarvis/response", 0);
break;
case MQTT_EVENT_DATA:
if (strstr(event->topic, "homeassistant")) {
// Parse device config
char *json = strndup(event->data, event->data_len);
cJSON *root = cJSON_Parse(json);
if (root) {
cJSON *name = cJSON_GetObjectItem(root, "name");
cJSON *uniq_id = cJSON_GetObjectItem(root, "uniq_id");
if (name && uniq_id) {
strcpy(devices[device_count].id, uniq_id->valuestring);
// Simple UA transliteration
snprintf(devices[device_count].name_ua, 128, "%s", name->valuestring);
device_count++;
}
cJSON_Delete(root);
}
free(json);
}
break;
}
}

// WIFI & MQTT
void wifi_mqtt_init(void)
{
nvs_flash_init();
esp_netif_init();
esp_event_loop_create_default();

wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
esp_wifi_init(&cfg);
esp_netif_create_default_wifi_sta();
wifi_config_t wifi_config = {
    .sta = { .ssid = WIFI_SSID, .password = WIFI_PASS },
};
esp_wifi_set_mode(WIFI_MODE_STA);
esp_wifi_set_config(WIFI_IF_STA, &wifi_config);
esp_wifi_start();

esp_mqtt_client_config_t mqtt_cfg = {
    .broker.address.uri = MQTT_BROKER,
    .credentials.username = MQTT_USER,
    .credentials.authentication.password = MQTT_PASS,
};
mqtt_client = esp_mqtt_client_init(&mqtt_cfg);
esp_mqtt_client_register_event(mqtt_client, ESP_EVENT_ANY_ID, mqtt_event_handler, NULL);
esp_mqtt_client_start(mqtt_client);

}

// I2S MIC & SPEAKER
void i2s_init(void)
{
i2s_config_t mic_cfg = {
.mode = I2S_MODE_MASTER | I2S_MODE_RX,
.sample_rate = 16000,
.bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
.channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
.communication_format = I2S_COMM_FORMAT_STAND_I2S,
.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
.dma_buf_count = 3,
.dma_buf_len = 300,
};
i2s_pin_config_t mic_pin = {
.bck_io_num = I2S_MIC_BCK,
.ws_io_num = I2S_MIC_WS,
.data_out_num = -1,
.data_in_num = I2S_MIC_DATA,
};
i2s_driver_install(I2S_NUM_0, &mic_cfg, 0, NULL);
i2s_set_pin(I2S_NUM_0, &mic_pin);

i2s_config_t spk_cfg = {
    .mode = I2S_MODE_MASTER | I2S_MODE_TX,
    .sample_rate = 16000,
    .bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT,
    .channel_format = I2S_CHANNEL_FMT_ONLY_LEFT,
    .communication_format = I2S_COMM_FORMAT_STAND_I2S,
    .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1,
    .dma_buf_count = 3,
    .dma_buf_len = 300,
};
i2s_pin_config_t spk_pin = {
    .bck_io_num = I2S_SPK_BCK,
    .ws_io_num = I2S_SPK_WS,
    .data_out_num = I2S_SPK_DATA,
    .data_in_num = -1,
};
i2s_driver_install(I2S_NUM_1, &spk_cfg, 0, NULL);
i2s_set_pin(I2S_NUM_1, &spk_pin);

}

// LCD ST7789
void lcd_init(void)
{
spi_bus_config_t buscfg = {
.sclk_io_num = LCD_SPI_CLK,
.mosi_io_num = LCD_SPI_MOSI,
.miso_io_num = -1,
.quadwp_io_num = -1,
.quadhd_io_num = -1,
.max_transfer_sz = 240 * 240 * 2,
};
spi_bus_initialize(SPI2_HOST, &buscfg, SPI_DMA_CH_AUTO);

esp_lcd_panel_io_spi_config_t io_config = {
    .cs_gpio_num = LCD_CS,
    .dc_gpio_num = LCD_DC,
    .spi_mode = 2,
    .pclk_hz = 20 * 1000 * 1000,
    .trans_queue_depth = 10,
};
// Real init code here
ESP_LOGI(TAG, "LCD ST7789 initialized");

}

// MAIN
void app_main(void)
{
ESP_LOGI(TAG, "=== JARVIS UA v1.0 ===");

esp_vfs_spiffs_conf_t conf = {
    .base_path = "/spiffs",
    .partition_label = "spiffs",
    .max_files = 5,
    .format_if_mount_failed = true,
};
esp_vfs_spiffs_register(&conf);

lcd_init();
wifi_mqtt_init();
i2s_init();

vTaskDelay(5000 / portTICK_PERIOD_MS);

ESP_LOGI(TAG, "Scanned %d devices", device_count);
ESP_LOGI(TAG, "Say 'Jarvise' to start...");

// Start FreeRTOS tasks
xTaskCreate(jarvis_wake_task, "wake", 4096, NULL, 5, NULL);

}

[GM050]

Hello everyone,
I am the manufacturer of this product, and I would like to clarify several common questions and misunderstandings in a transparent manner.

About Fixed Roles

The product currently provides fixed roles only. This decision was not made due to a lack of technical capability, but because custom role configuration has a relatively high entry barrier.

During early testing and real-world sales, we observed that many users attempted custom configurations without fully understanding the process, which resulted in frequent setup failures and a significant number of negative reviews.

To lower the entry barrier and improve overall stability for new users, we temporarily adopted a fixed-role approach. This is a practical trade-off between usability and flexibility, not a technical limitation.

About Missing Technical Information on Store Pages

Some online store listings do not include detailed technical or extensibility information. This is mainly because:

Store operators prioritize operational convenience

They are not deeply familiar with the underlying technology
As a result, certain capabilities were not clearly communicated, even though the product itself supports them.

About Pricing and Cost Structure

The actual production cost of this product is significantly higher than its selling price.
The hardware manufacturing cost alone exceeds USD $10, not including:

Approximately 20% platform commission

Several dollars in international shipping costs

Import duties and compliance-related expenses, depending on the destination

The current pricing strategy is intended to enable broader adoption and real-world validation, rather than to maximize short-term profit.

Open Source and Technical Access

To support developers and technically inclined users, we have released open-source code for the relevant hardware interfaces, including communication and basic control functions.

Open-source code:

#ifndef BOARD_CONFIG_H
#define BOARD_CONFIG_H

#include <driver/gpio.h>

#define CONFIG_USE_PSRAM_OCTAL_MODE 1 // 1: octal mode, 0: quad mode

// 屏方向使能位, 顺时针旋转
#define CONFIG_DISPLAY_ROTATION_0 0 // 默认屏排线在南边,竖屏
#define CONFIG_DISPLAY_ROTATION_90 0 // 排线在东边,横屏
#define CONFIG_DISPLAY_ROTATION_180 0 // 排线在北边,竖屏
#define CONFIG_DISPLAY_ROTATION_270 1 // 排线在西边,横屏

#define AUDIO_INPUT_SAMPLE_RATE 24000
#define AUDIO_OUTPUT_SAMPLE_RATE 24000

#define AUDIO_INPUT_REFERENCE true

#define AUDIO_I2S_GPIO_MCLK GPIO_NUM_4
#define AUDIO_I2S_GPIO_WS GPIO_NUM_6
#define AUDIO_I2S_GPIO_BCLK GPIO_NUM_8
#define AUDIO_I2S_GPIO_DIN GPIO_NUM_7
#define AUDIO_I2S_GPIO_DOUT GPIO_NUM_5

#define AUDIO_CODEC_PA_PIN GPIO_NUM_9
#define AUDIO_CODEC_I2C_SDA_PIN GPIO_NUM_2
#define AUDIO_CODEC_I2C_SCL_PIN GPIO_NUM_1
#define AUDIO_CODEC_ES8311_ADDR ES8311_CODEC_DEFAULT_ADDR
#define AUDIO_CODEC_ES7210_ADDR ES7210_CODEC_DEFAULT_ADDR

// BUTTON
#define BUILTIN_LED_GPIO GPIO_NUM_NC
#define BOOT_BUTTON_GPIO GPIO_NUM_0
#define VOLUME_UP_BUTTON_GPIO GPIO_NUM_NC
#define VOLUME_DOWN_BUTTON_GPIO GPIO_NUM_NC
#define POWER_BUTTON_GPIO GPIO_NUM_48 // 开关机按键信号检测（来自IO分配表）

// ==== 电源保持/电源键（与IO分配表一致，供板级逻辑使用）====
#define POWER_KEY_GPIO POWER_BUTTON_GPIO // 复用 POWER_BUTTON 作为电源键
#define POWER_HOLD_GPIO GPIO_NUM_40 // 整机供电控制信号（自保持）
#define POWER_HOLD_ACTIVE_HIGH 1 // 1=高电平保持供电；0=低电平保持

#if CONFIG_DISPLAY_ROTATION_90 || CONFIG_DISPLAY_ROTATION_270
#define DISPLAY_WIDTH 296
#define DISPLAY_HEIGHT 240
#else
#define DISPLAY_WIDTH 240
#define DISPLAY_HEIGHT 296
#endif

#if CONFIG_DISPLAY_ROTATION_90
#define DISPLAY_MIRROR_X true
#define DISPLAY_MIRROR_Y false
#define DISPLAY_SWAP_XY true
#elif CONFIG_DISPLAY_ROTATION_180
#define DISPLAY_MIRROR_X true
#define DISPLAY_MIRROR_Y true
#define DISPLAY_SWAP_XY false
#elif CONFIG_DISPLAY_ROTATION_270
#define DISPLAY_MIRROR_X false
#define DISPLAY_MIRROR_Y true
#define DISPLAY_SWAP_XY true
#else
#define DISPLAY_MIRROR_X false
#define DISPLAY_MIRROR_Y false
#define DISPLAY_SWAP_XY false
#endif

#if CONFIG_DISPLAY_ROTATION_90 || CONFIG_DISPLAY_ROTATION_270
#define DISPLAY_OFFSET_X 0
#define DISPLAY_OFFSET_Y 0
#else
#define DISPLAY_OFFSET_X 0
#define DISPLAY_OFFSET_Y 0
#endif

#define DISPLAY_BACKLIGHT_PIN GPIO_NUM_13
#define DISPLAY_BACKLIGHT_OUTPUT_INVERT false

#define DISPLAY_TE_PIN GPIO_NUM_14
#define DISPLAY_SPI_CS_PIN GPIO_NUM_21
#define DISPLAY_SPI_DC_PIN GPIO_NUM_16
#define DISPLAY_SPI_RST_PIN GPIO_NUM_15
#define DISPLAY_SPI_MOSI_PIN GPIO_NUM_17
#define DISPLAY_SPI_MISO_PIN GPIO_NUM_NC
#define DISPLAY_SPI_SCLK_PIN GPIO_NUM_18

// BATTERY
#define BATTERY_LEVEL_DETECT_PIN GPIO_NUM_10
#define BATTERY_CHARGING_DETECT_PIN GPIO_NUM_39
// 若无"充满"独立引脚，避免与电源保持 GPIO40 冲突，设为 NC
#define BATTERY_CHARGED_DETECT_PIN GPIO_NUM_NC

// TF CARD
#define TF_CARD_SD_DETECT_PIN GPIO_NUM_47
#define TF_CARD_SD_CLK_PIN GPIO_NUM_36
#define TF_CARD_SD_CMD_PIN GPIO_NUM_35
#define TF_CARD_SD_DATA0_PIN GPIO_NUM_37
#define TF_CARD_SD_DATA1_PIN GPIO_NUM_38
#define TF_CARD_SD_DATA2_PIN GPIO_NUM_33
#define TF_CARD_SD_DATA3_PIN GPIO_NUM_34

// headphone detect
#define HEADPHONE_DETECT_PIN GPIO_NUM_3

// USB
#define USB_DM_PIN GPIO_NUM_19
#define USB_DP_PIN GPIO_NUM_20

// SPI0 (W25Q128 Flash)
#define SPI0_HD_PIN GPIO_NUM_27
#define SPI0_WP_PIN GPIO_NUM_28
#define SPI0_CS0_PIN GPIO_NUM_29
#define SPI0_CLK_PIN GPIO_NUM_30
#define SPI0_Q_PIN GPIO_NUM_31
#define SPI0_D_PIN GPIO_NUM_32

// UART0
#define UART0_TXD_PIN GPIO_NUM_43
#define UART0_RXD_PIN GPIO_NUM_44

// Reserved IO
#define RESERVED_IO_3 GPIO_NUM_3
#define RESERVED_IO_11 GPIO_NUM_11
#define RESERVED_IO_12 GPIO_NUM_12
#define RESERVED_IO_26 GPIO_NUM_26
#define RESERVED_IO_41 GPIO_NUM_41
#define RESERVED_IO_42 GPIO_NUM_42

#endif // BOARD_CONFIG_H

[iuridomingos]

Hi GM050,
Thank you very much for sharing such detailed and valuable information about the hardware. I truly appreciate the transparency and the time you took to explain everything.
I would also like to say that I am a loyal customer of your store — I really like your products and the quality of the devices you develop.
I completely understand the challenges you mentioned regarding users having difficulties configuring the device, which is why you decided to sell it already preconfigured. That makes total sense, especially for non-technical users.
From a developer’s perspective, this project is absolutely fascinating. My interest in customizing the hardware and firmware is not for commercial purposes, but purely for study, learning, and exploring the full potential that your hardware can offer.
I genuinely believe that if the code were opened or documented further, you would attract another group of customers — developers and technical enthusiasts — not only general users. Many people would buy the device specifically because of its openness and flexibility.
I am also very excited to start working with your new device based on the C3 board. I already own two of these devices and I am looking forward to exploring them.
Thank you again for your work and for engaging with the community.

[RealDeco]

agree, it could have been a very popular device if it had been open source so developers could develop for it, and it might be easier for non-tech people that the device is already setup, but it's also illegal since the the unknowing user is being a recorded and stored into a account that does not belong to themself.

also a shame the audio jack is only mono, that would be one of the reasons many would buy this device, to connect it to the stereo, which not many devices offer (actually i only know of guition's 1.80", which i can highly recommend for exactly that, stereo jack out 👍)

[RealDeco]

esphome code available for testing here: https://github.com/RealDeco/xiaozhi-esphome/blob/main/devices/Under_Development/testing/AiCoderS3.yaml
since i broke the screen on my device while trying to figure out what it was i can't test screen so let me know and i can't buy the device from my country anymore.
so GM050, i would gladly support your device but need a new device for testing

[9999luongvang]

can you share soursecode?

[iuridomingos]

can you share soursecode?

Yes!!
sp-esp32-s3-1.54-muma.zip

[9999luongvang]

thankyou, but MIC and AUDIO dont work.

[iuridomingos]

thankyou, but MIC and AUDIO dont work.

Exactly.
That's what I said at the beginning of the message.

I'm still trying to figure out how to make it work.

[RealDeco]

judging the image i think it also need a #define DISPLAY_INVERT_COLOR true

[alexstudiodj]

У меня есть от продавца прошивка. выложу здесь на случай, если нужно восстановить девайс.
merged-binary.zip

[v4vendetta]

@78 Would it be possible, based on the information provided in this thread, to implement this to support this device?

[78]

I believe this can be done by sharing this thread's URL with Claude Code.

[RealDeco]

the developer of the hardware have already made the files needed, he just need add it/make them public. but haven't been that helpful so i gave up on this device. so many other options out there.