ESP32-S3 Touch AMOLED 1.75" - Wi-Fi / Bluetooth Development Board (No Battery) - Waveshare 33692

Description

The ESP32-S3 Touch AMOLED 1.75" is a compact, high-performance development board designed for projects that require an elegant user interface, touch control, audio processing, and wireless connectivity. The board is based on the dual-core ESP32-S3 microcontroller and is housed in a one-piece, CNC-machined anodized aluminum enclosure, ensuring durability and a premium appearance.

This standard version does not include a battery and is intended for operation using external power via the USB-C port or with a user-supplied 3.7 V Li-Ion / Li-Po battery, which can be connected via the onboard MX1.25 battery connector. The integrated AXP2101 power management IC supports battery charging and power control once a battery is connected.

The board features a 1.75" round AMOLED capacitive touch display, offering very high contrast, wide viewing angles, and excellent readability. Additionally, it includes a dual-microphone array, audio codec, onboard speaker, and a 6-axis IMU, enabling multimedia, interactive, gesture-based, and voice-controlled applications.

The board supports both ESP-IDF and Arduino environments, enabling fast prototyping and simplified application development.

1. ESP32-S3R8 - The SoC with WiFi and Bluetooth, up to 240MHz operating frequency, with onboard 8MB PSRAM
2. 32MB NOR Flash
3. QMI8658 - 6-axis IMU includes a 3-axis gyroscope and a 3-axis accelerometer 
4. Dual microphones with onboard echo cancellation circuit, enabling higher-quality audio capture
5. Onboard antenna - supports 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE)
6. Display interface
7. ES7210 echo cancellation algorithm chip - for reducing echo and enhancing audio capture accuracy
8. ES8311 audio codec chip
9. PWR power button - for system power supply ON/OFF, supports custom function 
10. BOOT button - for device startup and function debugging
11. AXP2101 - Highly integrated power management chip
12. Type-C port - ESP32-S3 USB port, for program burning and log printing
13. MX1.25 Lithium Batt header - MX1.25 2PIN connector, for 3.7V Lithium Batt, supports charging and discharging
14. Onboard speaker pads

Features

• Processor
  • ESP32-S3R8, 32-bit Xtensa LX7
  • Dual-core, up to 240 MHz
• Wireless Connectivity
  • Wi-Fi 2.4 GHz (802.11 b/g/n)
  • Bluetooth 5 LE
• Memory
  • 512 KB SRAM
  • 384 KB ROM
  • 8 MB PSRAM
  • 32 MB NOR Flash
• Display
  • Type: Round AMOLED
  • Size: 1.75"
  • Resolution: 466 × 466 px
  • Colors: 16.7 million
  • Brightness: up to 700 cd/m²
  • Contrast ratio: 100,000:1
  • Interface: QSPI
  • Driver IC: CO5300
• Touch Panel
  • Capacitive
  • Controller: CST9217 (I²C)
• Audio
  • Dual microphone array
  • ES8311 audio codec
  • ES7210 echo-cancellation chip
  • Onboard speaker
• Sensors
  • 6-axis IMU QMI8658
• Power
  • USB Type-C power supply
  • MX1.25 connector for 3.7 V Li-Ion / Li-Po battery (battery not included)
  • AXP2101 power management
• Enclosure
  • CNC-machined anodized aluminum
  • Lanyard mounting holes
• Supported Development Environments
  • ESP-IDF
  • Arduino
• Applications
  • HMI interfaces and touch panels
  • IoT devices with displays
  • Voice interaction and AI speech projects
  • Mini control and status panels
  • Portable device prototyping
  • Smart gadgets, wearables, portable electronics

Kit includes

• 1× ESP32-S3 Touch AMOLED 1.75" development board
• 1× silver polyester lanyard