ESP32-S3-Touch-AMOLED-1.75

ESP32-S3-Touch-AMOLED-1.75 is a high-performance MCU board designed by Waveshare. Despite its compact size, it features a 1.75inch capacitive touch AMOLED screen, power management chip, 6-axis IMU sensor (3-axis accelerometer and 3-axis gyroscope), RTC, TF slot, microphone, speaker and various other peripherals on board for easy development and embedding into the product.

SKU	Product
31261	ESP32-S3-Touch-AMOLED-1.75
31262	ESP32-S3-Touch-AMOLED-1.75-B
31264	ESP32-S3-Touch-AMOLED-1.75-G

Features

• Equipped with a high-performance Xtensa® 32-bit LX7 dual-core processor clocked at up to 240 MHz
• Supports 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth® 5 (LE) with an onboard antenna
• Built-in 512KB SRAM and 384KB ROM, with stacked 8MB PSRAM and external 16MB Flash
• Onboard 1.75inch capacitive touch AMOLED screen, 466×466 resolution, 16.7M colors, capable of displaying color images clearly

Hardware Description

• Onboard 1.75inch capacitive touch high‑definition AMOLED screen, 466×466 resolution, 16.7M colors, capable of displaying color images clearly
• Built-in CO5300 driver chip and CST9217 capacitive touch controller chip, communicating via QSPI and I2C interfaces respectively, minimizing the use of I/O pins
• Onboard QMI8658 6-axis IMU (3-axis accelerometer, 3-axis gyroscope) for motion posture detection, step counting, etc.
• Onboard PCF85063 RTC chip powered by AXP2101 with battery connection for uninterrupted power supply
• Onboard PWR and BOOT side buttons, configurable for custom function development
• Onboard 3.7V MX1.25 lithium battery charge/discharge interface
• Onboard 8Pin header, providing 3 GPIOs and 1 UART for external device connection and debugging, allowing flexible peripheral configuration
• Onboard TF card slot for storage expansion, fast data transfer, and flexibility, suitable for data logging and media playback, simplifying circuit design
• Benefits of using AXP2101 include efficient power management, support for multiple output voltages, charging and battery management functions, and optimized battery life
• The AMOLED screen offers higher contrast, wide viewing angles, rich colors, fast response time, thin design, low power consumption, and flexibility

Onboard Resources

1. ESP32-S3R8 Wi-Fi and Bluetooth SoC 240MHz operating frequency, stacked 8MB PSRAM
2. Onboard Chip Antenna Supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE)
3. IPEX 1 Antenna Connector Can be switched to an external antenna by changing the resistors
4. PWR Power Button Controls power on/off and supports custom functions
5. BOOT Button Used for device startup and functional debugging
6. MX1.25 2P Speaker Interface MX1.25 2P connector, can be used to connect a speaker
7. TCA9554 I/O expander chip
8. PCF85063 RTC clock chip
9. QMI8658 6-axis IMU includes a 3-axis gyroscope and a 3-axis accelerometer
10. AXP2101 Highly integrated power management chip
11. 2.54mm Pitch 8PIN Header Convenient for external debugging or connecting sensors
12. Dual-microphone Design Combined with echo cancellation circuitry for higher quality audio capture
13. IPEX Gen 1 GPS antenna holder GPS version has an onboard LC76G module and requires an external GPS ceramic antenna
14. Type-C Interface ESP32-S3 USB interface for program flashing and serial logging
15. ES7210 Echo cancellation algorithm chip, for reducing echo and enhancing audio capture accuracy
16. MX1.25 Lithium Battery Header MX1.25 2P connector for connecting a 3.7V lithium battery, supports charging and discharging

Dimensions

Development Methods

The ESP32-S3-Touch-AMOLED-1.75 supports two development frameworks: Arduino IDE and ESP-IDF, providing flexibility for developers to choose the tool that best fits their project requirements and personal preference.

Both development methods have their own advantages. Developers can choose based on their needs and skill levels. Arduino is simple to learn and quick to start, suitable for beginners and non-professionals. ESP-IDF provides more advanced development tools and stronger control capabilities, suitable for developers with professional backgrounds or higher performance requirements, and is more appropriate for complex project development.

• Arduino IDE is a convenient, flexible, and easy-to-use open-source electronics prototyping platform. It requires minimal foundational knowledge, allowing for rapid development after a short learning period. Arduino has a huge global user community, providing a vast amount of open-source code, project examples, and tutorials, as well as a rich library ecosystem that encapsulates complex functions, enabling developers to implement various features rapidly. You can refer to the Working with Arduino to complete the initial setup, and the tutorial also provides related demos for reference.

• ESP-IDF, short for Espressif IoT Development Framework, is a professional development framework launched by Espressif Systems for its ESP series of chips. It is based on C language development and includes compilers, debuggers, flashing tools, etc. It supports development via command line or integrated development environments (such as Visual Studio Code with the Espressif IDF plugin), which provides features like code navigation, project management, and debugging. We recommend using VS Code for development. For the specific configuration process, please refer to the Working with ESP-IDF. The tutorial also provides relevant demos for reference.