diff --git a/docs/assembly.md b/docs/assembly.md
index 6f125bec..82a5da2d 100644
--- a/docs/assembly.md
+++ b/docs/assembly.md
@@ -13,10 +13,12 @@
 - 连接线：杜邦线 6 根以上
 - 供电：USB-C（调试期建议）或锂电池方案（推荐 `505060-2000mAh` + TP5000，用于长期使用）
 
-## 2. 4.2寸 + ESP32-C3 Pro mini 开发板 推荐接线
+## 2. 4.2寸 + ESP32-C3 / ESP32-S3 开发板推荐接线
 
 如果你使用推荐方案（`epd_42_wsv2_ssd1683_c3_promini`），建议按下表接线：
 
+### ESP32-C3 Pro mini（`epd_42_wsv2_ssd1683_c3_promini`）
+
 | ESP32-C3 | 墨水屏 |
 |----------|--------|
 | `GPIO4` | `CLK / SCK` |
@@ -28,6 +30,21 @@
 | `3V3` | `VCC` |
 | `GND` | `GND` |
 
+### ESP32-S3 N16R8 开发板（`epd_42_wsv2_ssd1683_yd_s3_n16r8`）
+
+如果你使用 ESP32-S3 N16R8 开发板，请按 S3 固件环境的引脚定义接线：
+
+| ESP32-S3 | 墨水屏 |
+|----------|--------|
+| `GPIO12` | `CLK / SCK` |
+| `GPIO11` | `DIN / MOSI` |
+| `GPIO10` | `CS` |
+| `GPIO9` | `DC` |
+| `GPIO8` | `RST` |
+| `GPIO7` | `BUSY` |
+| `3V3` | `VCC` |
+| `GND` | `GND` |
+
 ## 3. 供电建议
 
 ### 开发与排障
@@ -67,7 +84,7 @@
 
 这样即使出现黑屏或刷新异常，也能更快判断是供电问题还是信号线问题。
 
-## 3. 首次上电检查
+## 5. 首次上电检查
 
 首次上电建议仅使用 USB 供电，不要同时接锂电池。检查项：
 
@@ -117,6 +134,7 @@
 4. **屏幕模组丝印与想象中的脚位顺序不一致**
 
 对于 ESP32-C3 推荐方案，请重点确认：`GPIO10` ↔ 屏幕 `BUSY`。
+对于 ESP32-S3 N16R8 方案，请重点确认：`GPIO7` ↔ 屏幕 `BUSY`。
 
 ## 7. 下一步
 
diff --git a/docs/en/assembly.md b/docs/en/assembly.md
index 26582700..28462ad6 100644
--- a/docs/en/assembly.md
+++ b/docs/en/assembly.md
@@ -13,10 +13,12 @@ This guide helps you complete basic assembly in 10-20 minutes.
 - 6+ dupont wires
 - USB-C data cable
 
-## 2. Recommended wiring for 4.2-inch + ESP32-C3
+## 2. Recommended wiring for 4.2-inch + ESP32-C3 / ESP32-S3
 
 If you use the recommended build (`epd_42_wsv2_ssd1683_c3_promini`), wire it like this:
 
+### ESP32-C3 Pro mini (`epd_42_wsv2_ssd1683_c3_promini`)
+
 | ESP32-C3 | E-paper |
 |----------|---------|
 | `GPIO4` | `CLK / SCK` |
@@ -28,6 +30,21 @@ If you use the recommended build (`epd_42_wsv2_ssd1683_c3_promini`), wire it lik
 | `3V3` | `VCC` |
 | `GND` | `GND` |
 
+### ESP32-S3 N16R8 dev board (`epd_42_wsv2_ssd1683_yd_s3_n16r8`)
+
+If you use the ESP32-S3 N16R8 dev board, wire it according to the S3 firmware profile:
+
+| ESP32-S3 | E-paper |
+|----------|---------|
+| `GPIO12` | `CLK / SCK` |
+| `GPIO11` | `DIN / MOSI` |
+| `GPIO10` | `CS` |
+| `GPIO9` | `DC` |
+| `GPIO8` | `RST` |
+| `GPIO7` | `BUSY` |
+| `3V3` | `VCC` |
+| `GND` | `GND` |
+
 ## 3. Power guidance
 
 ### Development and debugging
@@ -119,6 +136,7 @@ Check these first:
 4. **the module silk labels do not match your assumed pin order**
 
 For the recommended ESP32-C3 build, the critical path is: `GPIO10` ↔ display `BUSY`.
+For the ESP32-S3 N16R8 build, the critical path is: `GPIO7` ↔ display `BUSY`.
 
 ## 6. Next Step
 
diff --git a/docs/en/hardware.md b/docs/en/hardware.md
index d9a0b193..b69544ac 100644
--- a/docs/en/hardware.md
+++ b/docs/en/hardware.md
@@ -17,7 +17,8 @@ The most recommended and best-supported combination today is:
 To accommodate different developers, we provide pre-compiled firmware in our Releases for various boards and screens. The main supported MCUs include:
 1. **ESP32-C3 Pro mini**: Compact size, native USB CDC (firmware suffix typically contains `c3_promini`).
 2. **ESP32-C3 Standard Board**: Features a dedicated serial chip (like CH340) for more stable serial debugging (firmware suffix typically contains `c3_std`).
-3. **ESP32-WROOM-32E**: The classic standard ESP32 development board (firmware suffix typically contains `wroom32e`).
+3. **ESP32-S3 N16R8 dev board**: A 4.2-inch option for larger Flash / PSRAM builds (firmware environment: `epd_42_wsv2_ssd1683_yd_s3_n16r8`).
+4. **ESP32-WROOM-32E**: The classic standard ESP32 development board (firmware suffix typically contains `wroom32e`).
 
 Why the **4.2-inch screen** paired with the **ESP32-C3 series** is recommended as the first choice:
 - screenshots and product docs are centered on the 4.2-inch version
@@ -85,6 +86,20 @@ The current pin definitions are implemented in: `firmware/src/config.h`
 | Config button | `GPIO9` |
 | LED | `GPIO3` |
 
+### ESP32-S3 N16R8 profile
+
+| Function | Pin |
+|----------|-----|
+| MOSI | `GPIO11` |
+| SCK | `GPIO12` |
+| CS | `GPIO10` |
+| DC | `GPIO9` |
+| RST | `GPIO8` |
+| BUSY | `GPIO7` |
+| Lithium battery ADC | `GPIO4` |
+| Config button | `GPIO0` |
+| Onboard RGB LED | `GPIO48` |
+
 ### ESP32-WROOM32E profile
 
 | Function | Pin |
diff --git a/docs/hardware.md b/docs/hardware.md
index ef67775a..9c993569 100644
--- a/docs/hardware.md
+++ b/docs/hardware.md
@@ -16,7 +16,8 @@
 为了方便不同开发者，我们在 Release 中提供了适配多种开发板的预编译固件。主要支持以下主控：
 1. **ESP32-C3 Pro mini**：体积小巧，原生 USB CDC（固件后缀常带 `c3_promini`）。
 2. **ESP32-C3 标准板**：带独立串口芯片（如 CH340），串口调试更稳定（固件后缀常带 `c3_std`）。
-3. **ESP32-WROOM-32E**：经典的 ESP32 标准开发板（固件后缀常带 `wroom32e`）。
+3. **ESP32-S3 N16R8 开发板**：适合需要更大 Flash / PSRAM 的 4.2 寸方案（固件环境为 `epd_42_wsv2_ssd1683_yd_s3_n16r8`）。
+4. **ESP32-WROOM-32E**：经典的 ESP32 标准开发板（固件后缀常带 `wroom32e`）。
 
 推荐以 **4.2 寸屏幕** 搭配 **ESP32-C3 系列开发板** 作为首选方案的原因：
 - 资料、文档、配置页预览都优先围绕 4.2寸版本展开
@@ -84,6 +85,20 @@
 | 配置按键 | `GPIO9` |
 | LED | `GPIO3` |
 
+### ESP32-S3 N16R8 Profile
+
+| 功能 | 引脚 |
+|------|------|
+| MOSI | `GPIO11` |
+| SCK | `GPIO12` |
+| CS | `GPIO10` |
+| DC | `GPIO9` |
+| RST | `GPIO8` |
+| BUSY | `GPIO7` |
+| 锂电池 ADC | `GPIO4` |
+| 配置按键 | `GPIO0` |
+| 板载 RGB LED | `GPIO48` |
+
 ### ESP32-WROOM32E Profile
 
 | 功能 | 引脚 |