ESP32-S3 1.75" AMOLED Round Touch Display Dev Board (466x466)

This is a 1.75" display development board based on the ESP32-S3, with a range of neat features, and three different hardware variants options! The board is controlled by an ESP32-S3R8 Xtensa 32-bit LX7 dual-core processor with up to 240MHz main frequency, supported by 512KB of SRAM and 384KB ROM, with onboard 8MB PSRAM and an external 16MB Flash memory. It supports 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE), with an onboard antenna. The display is a 1.75" AMOLED touchscreen panel with a 466x466 resolution, offering 16.7m colours. Compared to traditional LCDs, AMOLED offers better light control, with sharper detail and more vivid colours. The rear of the board also features a dual microphone array for audio algorithms such as noise reduction and echo cancellation, suitable for accurate speech recognition and near-field / far-field voice wake-up applications. An 8Ω 2W speaker is also included for the dedicated speaker header. There's also a 6-axis IMU (3-axis accelerometer and 3-axis gyroscope), onboard RTC and a slot for a microSD card. The board is powered and programmed via USB-C. Power can also be provided via the MX1.25/PicoBlade-compatible lithium battery recharge/discharge header (we sell compatible batteries in the store). IO is available via the onboard 8-pin header, providing 3x GPIO (16/17/18), UART (RX/TX) and power pins (VBUS/GND/3.3V). Variants available We offer this dev board in three different flavours:

* Standard version - Board + 8Ω 2W speaker

* Case version - Board + 8Ω 2W speaker + Case

* GPS version - Board + 8Ω 2W speaker + GNSS ceramic antenna

Features

* ESP32-S3R8 dual-core Xtensa LX7 processor running at up to 240MHz

* 2.4GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE) with onboard antenna

* 512KB SRAM and 384KB ROM, with onboard 8MB PSRAM and external 16MB Flash

* 1.75" AMOLED capacitive touchscreen, 466 × 466 resolution, 16.7M colours

* AMOLED panel with high contrast, wide viewing angles, fast response and low power consumption

* CO5300 display driver (QSPI) and CST9217 capacitive touch controller (I2C)

* Dual microphone array for noise reduction, echo cancellation and voice wake-up applications

* 8Ω 2W speaker output via dedicated speaker header

* QMI8658 6-axis IMU (3-axis accelerometer and 3-axis gyroscope)

* PCF85063 RTC with battery-backed operation via AXP2101 power management IC

* MicroSD slot for external storage and media playback

* USB-C port for power, programming and debugging

* MX1.25/PicoBlade-compatible 3.7V lithium battery charge/discharge header

* 8-pin 2.54mm header providing GPIO, UART and power connections, with additional expansion pads

* PWR and BOOT programmable buttons for custom function control

What's onboard?

* ESP32-S3R8

* SoC with Wi-Fi and Bluetooth, operating at up to 240 MHz, with onboard 8MB PSRAM

* Onboard antenna

* Supports 2.4 GHz Wi-Fi (802.11 b/g/n) and Bluetooth 5 (LE)

* IPEX1 connector

* Allows switching to an external antenna by re-soldering an onboard resistor

* PWR button

* System power ON/OFF control, supports custom functions

* BOOT button

* Used for device start-up and function debugging

* MX1.25 2-pin speaker header

* TCA9554

* GPIO expander chip

* PCF85063

* RTC chip

* QMI8658

* 6-axis IMU including a 3-axis gyroscope and 3-axis accelerometer

* AXP2101

* Highly integrated power management IC

* 2.54 mm 8-pin header

* For debugging and connecting peripherals

* Dual microphones

* With onboard echo cancellation circuitry for improved audio capture quality

* IPEX1 GPS connector

* For connecting a GPS antenna (GPS version only, with built-in LC76G module)

* USB-C port

* ESP32-S3 USB interface for firmware flashing and log output

* ES7210

* Echo cancellation algorithm chip for reducing echo and improving audio capture accuracy

* MX1.25 lithium battery header

* MX1.25 2-pin connector for a 3.7 V lithium battery, supports charging and discharging

* TF card slot

Resources

* Product wiki

* Arduino IDE guide

* ESP-IDF guide

* Schematic

* Dimensions

Datasheets

* ESP32-S3 Series Datasheet

* QMI8658 Datasheet

* PCF85063 Datasheet

* AXP2101 Datasheet

* ES8311 Datasheet

* ES8311 User Guide

Package contents Standard version:

* 1x ESP32-S3 1.75" AMOLED Round Touch Display Dev Board (466x466)

* 1x 8Ω 2W speaker

Case version:

* 1x ESP32-S3 1.75" AMOLED Round Touch Display Dev Board (466x466)

* 1x 8Ω 2W speaker

* 1x Protective Case

GPS version:

* 1x ESP32-S3 1.75" AMOLED Round Touch Display Dev Board (466x466)

* 1x 8Ω 2W speaker

* 1x GNSS ceramic antenna