Onboard Resources​

1. ESP32-S3-PICO-1-N8R8 Wi-Fi and Bluetooth SoC, running at 240MHz, with integrated 8MB Flash and 8MB PSRAM in a stacked package
2. TF Card Slot TF card must be formatted as FAT32 for use
3. ES8311 Audio Codec Chip Supports audio input and output, low-power design, suitable for voice recognition and playback applications
4. BOOT Button Press and hold the BOOT button to power on again to enter download mode
5. PWR Power Button Hold BOOT, re-power on to enter download mode
6. Type-C Interface ESP32-S3 USB interface for program flashing and serial logging
7. Microphone For audio capture
8. SHTC3 Temperature and Humidity Sensor Provides ambient temperature and humidity measurement, enabling environmental monitoring function
9. MX1.25 2PIN Speaker Header Audio signal output, for connecting external speaker
10. MX1.25 2PIN Lithium Battery Header For connecting a lithium battery
11. Onboard Antenna Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE)
12. PCF85063 (back side) RTC clock chip, supports time-keeping function
13. 2 × 6PIN 2.54mm Pitch Female Header Can be used for expansion
14. Speaker Plays audio

Peripheral Quick Reference​

ePaper Display Specifications​

Pinout Definition​

When using the reserved GPIO terminals on the ESP32-S3-ePaper-1.54G board, pay attention to wire colors and corresponding functions to avoid damaging the board due to incorrect wiring habits

Expansion Interface​

Full GPIO Allocation​

The table below lists the GPIOs already occupied by onboard circuits and those brought out to expansion headers.

Precautions​

• When connecting external I2C devices, avoid address conflicts with 0x18, 0x70, 0x51.
• GPIO19/GPIO20 are connected to USB Type-C and are not recommended for use as general-purpose GPIO.
• GPIO0 is the BOOT pin, and EN/CHIP_PU is the reset signal; they are not recommended for general user input.
• GPIO33 to GPIO37 are used for the integrated Octal SPI PSRAM and cannot be used for other functions.

Dimensions​

This chapter contains the following sections. Please read as needed:

• Arduino Getting Started
• Setting Up Development Environment
• Example

Arduino Getting Started​

New to Arduino ESP32 development and looking for a quick start? We have prepared a comprehensive Getting Started Tutorial for you.

• Section 0: Getting to Know ESP32
• Section 1: Installing and Configuring Arduino IDE
• Section 2: Arduino Basics
• Section 3: Digital Output/Input
• Section 4: Analog Input
• Section 5: Pulse Width Modulation (PWM)
• Section 6: Serial Communication (UART)
• Section 7: I2C Communication
• Section 8: SPI Communication
• Section 9: Wi-Fi Basics
• Section 10: Web Server
• Section 11: Bluetooth
• Section 12: LVGL GUI Development
• Section 13: Comprehensive Project

Note: This tutorial uses the ESP32-S3-Zero as a reference example, and all hardware code is based on its pinout. Before you start, we recommend checking the pinout of your development board to ensure the pin configuration is correct.

Setting Up Development Environment​

1. Installing and Configuring the Arduino IDE​

Please refer to the tutorial Installing and Configuring Arduino IDE to download and install the Arduino IDE and add ESP32 support.

2. Installing Libraries​

• When installing Arduino libraries, there are typically two methods: Install Online and Install Offline. If the library installation requires Install Offline, you must use the provided library file.
• For most libraries, users can easily search for and install them via the Arduino IDE's online Library Manager. However, some open-source or custom libraries are not synchronized to the Arduino Library Manager and therefore cannot be found through online search. In this case, users can only install these libraries manually via offline methods.
• The example program package for the ESP32-S3-ePaper-1.54G development board can be downloaded from here. The Arduino\libraries directory within the package already contains all the library files required for this tutorial.

3. Arduino Project Parameter Settings​

Example​

The Arduino examples are located in the Arduino/examples directory of the example package.

01_ADC_Test​

Example Description

• The analog voltage connected through the GPIO is converted to digital by the ADC, and then the actual lithium battery voltage is calculated and printed to the terminal.

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• adc_bsp_init(void): Initializes ADC1, including creating an ADC one-shot trigger unit and configuring Channel 3 of ADC1.
• adc_get_value(float *value,int *data): Reads the value from Channel 3 of ADC1, calculates the corresponding voltage based on the reference voltage and resolution, and stores it at the location pointed to by the passed pointer. Stores 0 if the read fails.
• adc_example(void* parameter): After initializing ADC1, creates an ADC task. This task reads the ADC value every second and calculates the system voltage from the raw ADC reading.

Operation Result

• After the program is compiled and downloaded, you can view the printed ADC values and voltage output by opening the Serial Monitor, as shown in the following image:

  
  

02_I2C_PCF85063​

Example Description

• Through the I2C protocol, initialize the PCF85063 chip, set the time, and then periodically read the time and print it to the terminal

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• void i2c_rtc_loop_task(void *arg): Creates an RTC task to implement the RTC function, reading the clock of the RTC chip every second and outputting it to the terminal.

Operation Result

• After the program is compiled and downloaded, open the serial port monitoring to see the RTC time of the printout, as shown in the following figure:
  

  
  

03_I2C_STHC3​

Example Description

• Initialize the SHTC3 chip through the I2C protocol, and then print the temperature and humidity information read every 1 second to the terminal

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• void i2c_SHTC3_loop_task(void *arg): Creates a task for the SHTC3 sensor to periodically obtain temperature and humidity data.

Operation Result

• Open the serial port monitor, you can see the printed temperature and humidity data, as shown in the figure below:

  
  

04_SD_Card​

Example Description

• Drive the TF card through SDMMC, and print the TF card information to the terminal after successfully mounting.

Hardware Connection

• Install a FatFs-formatted TF card into the board before powering on

Code Analysis

• sdcard_init(void): Initializes the TF card using 1-line SDMMC mode.
• sdcard_loop_task(void *arg): A task to test TF card read/write functionality. You need to uncomment the #define sdcard_write_Test macro definition.

  //#define sdcard_write_Test
  

Operation Result

• Click on the serial port monitoring device, you can see the output information of the TF card, as shown in the figure below:

  
  

05_WIFI_AP​

Example Description

• This example can set the development board as a hotspot, allowing phones or other devices in STA mode to connect to the development board.

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• In the 05_WIFI_AP.ino file, locate ssid and password. Phones or other STA mode devices can then connect to the board using this SSID and password.

  const char *ssid = "ESP32_AP";
  const char *password = "12345678";
  

Operation Result

• After flashing the program, open the Serial Terminal. If a device successfully connects to the hotspot, the MAC address of that device will be output, as shown:

  
  

06_WIFI_STA​

Example Description

• This example configures the development board as a STA device to connect to a router, thereby accessing the system network.

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• In the 06_WIFI_STA.ino file, locate ssid and password, and modify them to match the SSID and Password of an available router in your current environment.

  const char *ssid = "you_ssid";
  const char *password = "you_password";
  

Operation Result

• After flashing the program, open the Serial Terminal. If the device successfully connects to the hotspot, the obtained IP address will be output, as shown in the figure:

  
  

07_Audio_out​

Example Description

• This example demonstrates playing PCM audio data on the ESP32-S3-ePaper-1.54G.

Hardware Connection

• Connect the board to the computer using a USB cable

Operation Result

• The device will play auido directly without showing content on the screen

08_E_paper_test​

Example Description

• This example is a native Arduino example for the ESP32-S3-ePaper-1.54G, demonstrating e-paper initialization, clearing the screen, displaying images, drawing basic shapes, and rendering text.

Hardware Connection

• Connect the board to the computer using a USB cable

Operation Result

• The screen refreshes, clears, displays an image, and draws basic graphics and text.

This chapter contains the following sections. Please read as needed:

• ESP-IDF Getting Started
• Setting Up Development Environment
• Example

ESP-IDF Getting Started​

New to ESP32 ESP-IDF development and looking to get started quickly? We have prepared a general Getting Started Tutorial for you.

• Section 1: Environment Setup
• Section 2: Running Examples
• Section 3: Creating a Project
• Section 4: Using Components
• Section 5: Debugging
• Section 6: FreeRTOS
• Section 7: Peripherals
• Section 8: Wi-Fi Programming
• Section 9: BLE Programming

Please Note: This tutorial uses the ESP32-S3-Zero as a teaching example, and all hardware code is based on its pinout. Before you start, it is recommended that you check the pinout of your development board to ensure the pin configuration is correct.

Setting Up Development Environment​

Install the ESP-IDF Development Environment​

1. Download the installation manager from the ESP-IDF Installation Manager page. This is Espressif's latest cross-platform installer. The following steps demonstrate how to use its offline installation feature.

   Click the Offline Installer tab on the page, then select Windows as the operating system and the ESP-IDF version you need (the version shown in the screenshot is for reference only — choose the version that fits your actual needs).

   
   

   After confirming your selection, click the download button. The browser will automatically download two files: the ESP-IDF Offline Package (.zst) and the ESP-IDF Installer (.exe).

   
   

   Please wait for both files to finish downloading.

2. Once the download is complete, double-click to run the ESP-IDF Installer (eim-gui-windows-x64.exe).

   The installer will automatically detect if the offline package exists in the same directory. Click Install from archive.

   
   

   Next, select the installation path. We recommend using the default path. If you need to customize it, ensure the path does not contain Chinese characters or spaces. Click Start installation to proceed.

   
   

3. When you see the following screen, the ESP-IDF installation is successful.

   
   

4. We recommend installing the drivers as well. Click Finish installation, then select Install driver.

   
   

Install Visual Studio Code and the ESP-IDF Extension​

1. Download and install Visual Studio Code.

2. During installation, it is recommended to check Add "Open with Code" action to Windows Explorer file context menu to facilitate opening project folders quickly.

3. In VS Code, click the Extensions icon  in the Activity Bar on the side (or use the shortcut Ctrl + Shift + X) to open the Extensions view.

4. Enter ESP-IDF in the search box, locate the ESP-IDF extension, and click Install.

   
   

5. For ESP-IDF extension versions ≥ 2.0, the extension will automatically detect and recognize the ESP-IDF environment installed in the previous steps, requiring no manual configuration.

Example​

The ESP-IDF examples are located in the ESP-IDF directory of the example package.

01_ADC_Test​

Example Description

• The analog voltage connected through the GPIO is converted to digital by the ADC, and then the actual lithium battery voltage is calculated and printed to the terminal.

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• Adc_PortInit(void): Initializes ADC1, including creating an ADC one-time trigger unit and configuring channel 3 for ADC1
• float Adc_GetBatteryVoltage(int *data): Reads the value from ADC1 channel 3 and returns the actual voltage value.
• uint8_t Adc_GetBatteryLevel(void): Returns the battery percentage.
• void Adc_LoopTask(void *arg): Creates an ADC task that reads the ADC value and prints it to the serial port every second.

Operation Result

• After the program is compiled and downloaded, you can view the printed ADC values and voltage output by opening the Serial Monitor, as shown in the following image:

  
  

02_I2C_PCF85063​

Example Description

• Through the I2C protocol, initialize the PCF85063 chip, set the time, and then periodically read the time and print it to the terminal

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• void i2c_rtc_loop_task(void *arg): Creates an RTC task to implement the RTC function, reading the clock of the RTC chip every second and outputting it to the terminal.

Operation Result

• After the program is compiled and downloaded, open the serial port monitoring to see the RTC time of the printout, as shown in the following figure:
  

  
  

03_I2C_STHC3​

Example Description

• Uses the I2C protocol to initialize and configure the SHTC3 chip, then reads and prints temperature and humidity information to the terminal every second.

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• void i2c_SHTC3_loop_task(void *arg): Creates a task for the SHTC3 sensor to periodically obtain temperature and humidity data.

Operation Result

• Open the serial port monitor, you can see the printed temperature and humidity data, as shown in the figure below:

  
  

04_SD_Card​

Example Description

• Drive the TF card through SDMMC, and print the TF card information to the terminal after successfully mounting.

Hardware Connection

• Install a FatFs-formatted TF card into the board before powering on

Code Analysis

• sdcard_init(void): Initializes the TF card using 1-line SDMMC mode.
• sdcard_loop_task(void *arg): A task to test TF card read/write functionality. You need to uncomment the #define sdcard_write_Test macro definition.

Operation Result

• Click to open the Serial Monitor device. You can see the output TF card information; practical_size indicates the actual capacity of the TF card, as shown below:

  
  

05_WIFI_AP​

Example Description

• This example can set the development board as a hotspot, allowing phones or other devices in STA mode to connect to the development board.

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• In the 05_WIFI_AP.ino file, locate the ssid and password. Phones or other STA mode devices can then connect to the development board using this SSID and password.

  #define EXAMPLE_ESP_WIFI_SSID      "waveshare_esp32"
  #define EXAMPLE_ESP_WIFI_PASSWORD      "wav123456"
  

Operation Result

• After flashing the program, open the serial terminal, if the device is successfully connected to the hotspot, the MAC address and IP address of the device will be output, as shown in the figure:

  
  

06_WIFI_STA​

Example Description

• This example configures the development board as a STA device to connect to a router, thereby accessing the system network.

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• In the file esp_wifi_bsp.c, find ssid and password, then modify them to the SSID and Password of an available router in your current environment.

  wifi_config_t wifi_config = {
    .sta = {
      .ssid = "PDCN",
      .password = "1234567890",
    },
  };
  

Operation Result

• After flashing the program, open the Serial Terminal. If the device successfully connects to the hotspot, the obtained IP address will be output, as shown in the figure:

  
  

07_Audio_Test​

Example Description

• This example demonstrates how to acquire microphone data and then play it back through the speaker.

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• i2c_master_Init(): Initializes the I2C bus.
• user_ui_init(): Initializes the global UI.
• user_button_init(): Initializes the audio interface.

Operation Result

• After the program is flashed, the screen shows nothing.

  TIP

  1. Press and hold the BOOT button to enter recording mode. Speak into the MIC, then release the BOOT button to play back the recording.
  2. Double-click the PWR button to play a piece of music
  3. Click the PWR button to interrupt music playback

08_BATT_PWR_Test​

Example Description

• Demonstrates how to control the system power via the PWR button when powered by the lithium battery.

Hardware Connection

• Connect the board to the computer using a USB cable

Code Analysis

• user_button_init(): Initializes the buttons and their trigger events.
• example_button_pwr_task(void* parmeter): Task that waits for button event triggers.

Operation Result

• After the program is flashed, disconnect USB power and connect a lithium battery. Press and hold the PWR button to power on. The screen shows nothing.

  TIP

  1. Press and hold the PWR button. Wait for the green LED to light up, indicating successful startup, then release the button.
  2. Press and hold the PWR button again, then release. The green LED turns off, indicating successful power-off.

09_E_paper_test​

Example Description

• This example is a native IDF example for the ESP32-S3-ePaper-1.54G, demonstrating e-paper initialization, clearing the screen, displaying images, drawing basic shapes, and rendering text.

Hardware Connection

• Connect the board to the computer using a USB cable

Operation Result

• The screen refreshes, clears, displays an image, and draws basic graphics and text.

1. Hardware Resources​

Development Board Design Files

• Schematic Diagram

2. Technical Manuals​

• ESP32-S3 Chip Official Manuals

  • Datasheet
  • Technical Reference Manual

• Datasheets

  • PCF85063 Datasheet
  • SHTC3 Datasheet
  • ePaper_1.54G Datasheet

3. Example​

• ESP32-S3-ePaper-1.54G Example (Github)

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