ESP32-S3 Touch AMOLED 1.75" - Wi-Fi / Bluetooth Development Board with Battery - Waveshare 33691

Description

The ESP32-S3 Touch AMOLED 1.75" is a compact, high-performance development board designed for projects requiring an elegant user interface, touch input, audio processing, and wireless connectivity. It is powered by the dual-core ESP32-S3 microcontroller and housed in a one-piece anodized aluminum enclosure, ensuring durability and a premium appearance.

This battery-included version supports autonomous operation without constant external power. The onboard power management system handles charging and discharging of the 3.7 V Li-Ion battery and enables optimized low-power modes, making the board ideal for portable and wearable applications.

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

The board supports the ESP-IDF and Arduino environments, making rapid prototyping and application development easier.

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: AMOLED (round)
  • Size: 1.75"
  • Resolution: 466 × 466 px
  • Colors: 16.7M
  • Brightness: up to 700 cd/m²
  • Contrast ratio: 100,000:1
  • Interface: QSPI
  • Driver IC: CO5300
• Touch
  • Capacitive
  • Touch controller: CST9217 (I²C)
• Audio
  • Dual microphone array
  • ES8311 audio codec
  • ES7210 echo cancellation
  • Onboard speaker
• Sensors
  • QMI8658 6-axis IMU (accelerometer + gyroscope)
• Power
  • 3.7 V Li-Ion battery (included)
  • MX1.25 battery connector
  • AXP2101 power management IC
  • USB Type-C power and programming
• Mechanical & Features
  • CNC aluminum alloy enclosure
  • PWR and BOOT buttons
  • PCB antenna
  • Lanyard mounting holes
• Development Support
  • ESP-IDF
  • Arduino
• Applications
  • Portable HMI interfaces
  • Mini control and status panels
  • Touchscreen-based IoT devices
  • Voice interaction and AI speech applications
  • Smart gadgets and wearables
  • Rapid prototyping of user devices

Kit includes

• 1× ESP32-S3 Touch AMOLED 1.75" development board
• 1× 3.7 V Li-Ion battery
• 1× Silver polyester lanyard