ESP32-S3-LCD-1.28
ESP32-S3-LCD-1.28 is a low-cost, high-performance MCU board designed by Waveshare. It features an onboard 1.28inch LCD screen, lithium battery charging chip, six-axis sensor (three-axis accelerometer and three-axis gyroscope), and other peripherals. The ESP32-S3R2 used is a system-on-chip (SoC) integrating low-power Wi-Fi and BLE 5.0, and it also has external 16MB Flash and 2MB PSRAM. The SoC's internal hardware encryption accelerator, RNG, HMAC, and digital signature modules can meet IoT security requirements. Its multiple low-power operating states meet the power consumption requirements of application scenarios such as the Internet of Things (IoT), mobile devices, wearable electronics, and smart homes.
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| SKU | Product |
|---|---|
| 26541 | ESP32-S3-LCD-1.28 |
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 2MB PSRAM and external 16MB Flash
- Features a Type-C interface for easy plug-and-play (no orientation concerns)
- Onboard 1.28inch LCD display, round IPS panel, 240×240 resolution, 65K colors
- Onboard QMI8658 6-axis IMU (3-axis accelerometer, 3-axis gyroscope) for detecting motion gesture
- Onboard 3.7V lithium battery charge/discharge header and breakout for most GPIOs
- Supports precise control features like flexible clocking and independent module power supply settings, enabling low-power modes for multiple scenarios
- Integrated with USB serial port full-speed controller, GPIO pins allow flexibly configuring various peripheral functions
Onboard Resources
- ESP32-S3R2 Wi-Fi Bluetooth SoC, 240MHz operating frequency, packaged with 2MB PSRAM
- W25Q128JVSIQ 16MB NOR-Flash
- QMI8658 6-axis inertial measurement unit (IMU), including a 3-axis gyroscope and a 3-axis accelerometer
- ME6217C33M5G 800mA output, low dropout, high PSRR
- CH343P USB-to-UART chip
- ETA6096 High-efficiency lithium battery charging chip
- 1.27mm pitch header Breaks out most GPIOs
- BOOT button Press and hold while resetting to enter download mode
- RESET button Reset button
- MX1.25 battery connector MX1.25 2P connector for connecting a 3.7V lithium battery, supports charging and discharging
- USB Type-C interface USB-to-serial port for program flashing and logging
- 2.4GHz ceramic antenna
Interface Introduction
- Type-C interface: The development board uses the CH343P chip for USB-to-UART, connecting to the ESP32-S3's UART_TXD (GPIO43) and UART_RXD (GPIO44), used for firmware flashing and log printing. With the auto-download circuit, you can directly download firmware after connecting a Type-C cable.
- 1.27mm pitch header: The development board breaks out most GPIOs for external connections. GPIOs can be configured for peripheral functions such as I2C and SPI. VSYS can directly input 5V to power the development board.
- LCD interface: The development board has an onboard 1.28inch screen with 4-wire SPI communication. The SPI rate can be increased to 80MHz (the development board uses GPIO40 to control backlight brightness; for details, please refer to the schematic).
- I2C interface: The ESP32-S3 provides multiple hardware I2C channels. Currently, GPIO6 (SDA) and GPIO7 (SCL) pins are used as the I2C bus. The onboard QMI8658 6-axis IMU is mounted on it. For details, please refer to the Schematic.
- MX1.25 connector: GPIO1 of the development board is used to measure the battery voltage pin. The battery voltage is divided by 200K and 100K resistors in series and connected to GPIO1. The ESP32-S3 series has 2 channels of 12-bit SAR ADC measurement units.
Pin Connections
| ESP32-S3R2 | LCD | MX1.25 | QMI8658 | other |
|---|---|---|---|---|
| GPIO0 | BOOT0 | |||
| GPIO1 | ADC | |||
| GPIO6 | SDA | |||
| GPIO7 | SCL | |||
| GPIO8 | LCD_DC | |||
| GPIO9 | LCD_CS | |||
| GPIO10 | LCD_CLK | |||
| GPIO11 | LCD_MOSI | |||
| GPIO12 | LCD_RST | |||
| GPIO40 | LCD_BL | |||
| GPIO47 | INT1 | |||
| GPIO48 | INT2 |
Dimensions
Specifications
LCD Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Display Chip | GC9A01A | Display Interface | SPI |
| Resolution | 240(H)RGB x 240(V) | Display Size | Φ32.4mm |
| Display Panel | IPS | Pixel Size | 0.135 (H) x 0.135 (V) mm |
IMU Specifications
| Parameter | Specification |
|---|---|
| Sensor | QMI8658 |
| Accelerometer Features | Resolution: 16-bit; Range (selectable): ±2, ±4, ±8, ±16g |
| Gyroscope Features | Resolution: 16-bit; Range (selectable): ±16, ±32, ±64, ±128, ±256, ±512, ±1024, ±2048°/sec |