BPI-Centi-S3

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Introduction

BPI-Centi-S3 with ESP32-S3 front
BPI-Centi-S3 with ESP32-S3 back
BPI-PicoW-S3 with ESP32-S3
BPI-Leaf-S3 with ESP32-S3
BPI-Smart with ESP8266
BPI-Bit with ESP32
BPI-AI Kendryte K210 RISC-V
BPI-UNO32 with ESP32 design

BPI-Centi-S3 is a small-sized ESP32-S3 development board with a 1.9-inch LCD onboard, suitable for the development of comprehensive Internet of Things application projects such as color display, interactive control, wireless communication, and sensor data acquisition.

Using the Espressif ESP32-S3 chip, it supports 2.4 GHz Wi-Fi and Bluetooth® Low Energy (Bluetooth® LE) dual-mode wireless communication.

In a compact space, it still provides an incremental rotary encoder, a buzzer, a WS2812 color LED, and all other available pins to meet diverse needs.

Support USB and external 3.7V lithium battery power supply, can realize automatic switching power supply function under dual power supply, and support USB charging mode, equipped with battery voltage detection circuit, convenient for power management.

Key Features

  • ESP32-S3, Xtensa® 32 bit LX7
  • 2M PSRAM, 8M FLASH
  • 2.4G WIFI, Bluetooth 5, Bluetooth mesh
  • GPIO, PWM, I2C, SPI, RMT, I2S, UART, USB, JTAG
  • 1 * ST7789 TFT LCD, 1.9-inch, 170*320 resolution, 8bit 8080 parallel port
  • 1 * Rotary Encoder
  • 1 * Buzzer
  • 1 * Neopixel LED
  • 1 * SH 1mm 4-Pin I2C connector
  • 2 * SH 1mm 6-Pin
  • 1 * USB Type-C
  • 1 * MX 1.25mm 2-Pin battery slot, support charging
  • 2 * M3 Screw Holes

Getting Start

hardware

Schematic Diagram of Hardware Interface

BPI-Centi-S3-V0.2-IO-1920-white.png

BPI-Centi-S3 1.9-inch LCD display:

BPI-Centi-S3 5.jpg

Hardware Specifications

BPI-Centi-S3 Spec
SoC ESP32-S3, Xtensa® 32-bit LX7 dual-core processor
Clock Frequency 240MHz MAX
Internal ROM 384 KB
Internal SRAM 320 KB
Onboard FLASH ROM 8MB
On-chip PSRAM 2MB
WIFI IEEE 802.11 b/g/n, 2.4Ghz frequency band, 150Mbps
bluetooth Bluetooth 5, Bluetooth mesh
External crystal oscillator 40Mhz
RTC and Low­Power Management Power Management Unit (PMU) + Ultra-­Low-­Power Coprocessor(ULP)
GPIO 9 available GPIOs have been exported to the SH 1mm socket
Support Peripherals I2C, SPI, PWM, UART, RMT, I2S, SD
JST SH 1mm socket 1 * 4Pin, 2 * 6Pin
USB 1 * Full Speed USB 2.0 OTG, Type-C Female
USB Serial/JTAG Controller 1, USB full speed standard, CDC-ACM, JTAG
TFT LCD size 1.9 inches
TFT LCD resolution 170 * 320 RGB
TFT LCD control chip ST7789V3
TFT LCD interface 8bit 8080 parallel port
Encoder 1 * Incremental Rotary Encoder, support pressing function
Buzzer 1
Color LED 1 * WS2812 2020 LED
Button RST Button, BOOT Button
Screw Holes 2 * M3 Screw Holes
Machine working temperature -20℃ ~ +60℃
Working voltage 3.3V
USB input voltage 3.3V~5.5V
Maximum discharge current [email protected] DC/DC
Battery connector MX 1.25mm 2-Pin
USB charging Support
Maximum charging current 500mA

Hardware Dimensions

BPI-Centi-S3-V0.2 Dimensions.jpg

LCD Wiring Definition

BPI-Centi-S3 LCD Wiring
ESP_LCD_BLK GPIO2
ESP_LCD_RES GPIO3
ESP_LCD_CS GPIO4
ESP_LCD_D/C GPIO5
ESP_LCD_WR GPIO6
ESP_LCD_RD GPIO7
ESP_LCD_D0 GPIO8
ESP_LCD_D1 GPIO9
ESP_LCD_D2 GPIO10
ESP_LCD_D3 GPIO11
ESP_LCD_D4 GPIO12
ESP_LCD_D5 GPIO13
ESP_LCD_D6 GPIO14
ESP_LCD_D7 GPIO15
ESP_TP_RESET GPIO16
II2C_SCL GPIO17
II2C_SDA GPIO18
ESP_TP_INT GPIO21

Peripheral Wiring Definition

BPI-Centi-S3 peripheral wiring
RST button RST(CHIP_PU)
BOOT button GPIO0
BAT_ADC battery voltage detection GPIO1
Buzzer GPIO36
EC_KEY Rotary Encoder GPIO35
EC_A Rotary Encoder GPIO37
EC_B Rotary Encoder GPIO47
WS2812B-2020 GPIO48

Resources

BPI-Steam: Code with MicroPython

BPI-Steam: Code with Arduino

Code on GitHub

Schematic on GitHub

Reference Video

Easy to buy sample

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