BPI-Bit Lite

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About BPI:bit Lite

BPI-Bit Lite with ESP32-S2
BPI-Bit with ESP32
BPI-Leaf-S3 with ESP32-S3
BPI-AI Kendryte K210 RISC-V
BPI-UNO32 with ESP32 design

BPI-Bit V2 banner.jpg

BPI:Bit Lite development board is a successor to BPI:Bit, inheriting most of the core hardware functions.

Support Webduino, Arduino, MicroPython programming environment suitable for STEAM education.

key features

  • ESP32-S2
  • 5x5 RGB LED matrix
  • 1 buzzer
  • 1 thermosensitive sensor
  • 2 photosensitive sensors
  • 2 buttons on the front, 1 reset button and 1 boot button on the back
  • Type-C USB interface
  • Size 5x5cm
  • The Goldfinger Edge Connector definition is fully compatible with Micro: Bit

Hardware upgrade and function comparison

BPI:Bit VS BPI:Bit Lite
Module BPI:Bit BPI:Bit Lite
SoC control chip ESP32 ESP32-S2
ROM 448 KB 128 KB
RAM 520 KB 320 KB
FlASH ROM 4096 KB 4096 KB
PSRAM None 2048 KB
Wireless Capability WIFI,Bluetooth WIFI
all-color LED 25 WS2812-5050 Lamp beads 25 WS2812-3535 Lamp beads
Key 2 programmable keys,1 RST key 2 programmable keys,1 BOOT key,1 RST key
buzzer 5.3x5.3mm buzzer 8.5x8.5mm buzzer
USB interface Micro USB Type-C USB
USB to TTL support None
battery interface support None
IO 19 pin Goldfinger IO(Compatible with Micro :bit accessories ) 19 pin Goldfinger IO(Compatible with Micro :bit accessories )
Nine-axis sensor support None
photosensitive sensor 2 2
thermosensitive sensor 1 1

Hardware interface

Bpi bit v2 interface en.jpg

BPI:Bit Lite specification
SoC ESP32-S2FN4R2,Xtensa® 32 bit LX7 Single-Core Processer
frequency 240MHz MAX
operating temperature -40℃~+85℃
ROM 128 KB
SRAM 320 KB
FLASH ROM 4 MB
PSRAM 2 MB
WIFI IEEE 802.11 b/g/n ,2.4Ghz
GPIO 19 available GPIO pins have been introduced and peripheral functions are available:ADC,TOUCH,PWM,SPI,I2C,I2S,Pulse counter, RMT,TWAI® Controller,SD/MMC,LCD_CAMERA
external crystal 40Mhz
Buzzer 8.5x8.5mm buzzer
LED 25 Series full color LED lamp, single line GPIO control; 1 monochrome LED, CONTROLLED by GPIO
photosensitive sensor 2 photosensitive sensor
thermosensitive sensor 1 thermosensitive sensor
IO 19pins 19 pin Goldfinger IO(Compatible with Micro :bit accessories ),Crocodile clip bayonet with 19 pin contacts on the back
Key 2 Programmable buttons,1 BOOT botton,1 reset key
USB USB Type-C interface,full speed USB OTG,USB-ACM
operating voltage 3.3V
Power USB Type-C input 5V,or Goldfinger IO input 3.3V power supply
size 5 * 5 cm

On-board peripherals

Peripheral GPIO allocation and signal type
photosensitive sensor(L) GPIO 12 Analog Input
photosensitive sensor(R) GPIO 13 Analog Input
Key A GPIO 38 Digital Input
Key B GPIO 33 Digital Input
Key BOOT GPIO 0 Digital Input
thermosensitive sensor GPIO 14 Analog Input
buzzer GPIO 17 PWM(Digital Output)
RGB_LED GPIO 18 Digital Output

5*5 Full color LED lights

BPI:Bit V2 have 25 Full color LED lights , single GPIO ontrol.The three primary color pixels of each LED can achieve 8bit 256 level brightness display, and achieve 16777216 color full color display, scanning frequency is not less than 400Hz/s.

5*5 LEDs list of BPI:Bit V2
20 15 10 5 0
21 16 11 6 1
22 17 12 7 2
23 18 13 8 3
24 19 14 9 4

Goldfinger GPIO define

BPI:Bit Lite Gold finger GPIO is defined to be compatible with Micro :Bit. GPIO expansion board accessories can be used with Micro: Bit.

Bpi bit v2 goldfinger.jpg

SPI,I2C
Function Pin Name GPIO Num
SPI_SCK P13 GPIO36
SPI_MISO P14 GPIO37
SPI_MOSI P15 GPIO35
SPI_CS P16 GPIO34
I2C_SCL P19 GPIO16
I2C_SDA P20 GPIO15

Power

BPI:Bit Lite supports two power supply modes

1. Type-C USB:Use USB cable power supply, connect USB interface of computer or other 5V USB charger to power the development board.

2. Gold finger: At the bottom of the development board, the gold finger contains a power interface with both input and output functions. It uses 3.3V power supply, positive terminal is connected to 3V3, and negative terminal is connected to GND.

Software

Webduino

Webduino logo 1200x350.jpg

webduino在线积木编程平台

webduino积木编程平台 Windows安装版

webduino在线教学手册

Arduino

Arduino logo 1200x350.png

Arduino 是一个开源嵌入式软硬件开发平台,用来供用户制作可交互式的嵌入式项目。

Preparing...

MicroPython

Mircopython.png

MicroPython实现了大部分Python 3 特性和语法,易学易上手,验证程序效果无需编译直接下载进芯片运行。

无论是否有编程基础,MicroPython的上手难度绝对远低于其他编程语言,其代码易读性高,且开源社区有多年积累的丰富资源,就如同Python一样拥有极强的生命力与应用价值。

Preparing...

Documents

BPI-Bit Lite schematic