BPI-Bit STEAM 教育开发板

BPI:bit介绍

Overview: BPI:bit

BPI-UNO32 with ESP32 design

Overview: BPI:bit

Overview: BPI:bit for Webduino

BPI-bit acrylic shell compatible LEGO bricks

BPI:bit gpio expansion board

BPI:bit gpio expansion board

BPI bit (又可以叫BPI-bit和bpi:bit). 支持Webduino, Arduino, MicroPython ,和Scratch X 编程环境 ，专注在STEAM教育领域

BPI:bit 主要功能介绍

bpi:bit 开发板仅有5厘米X5厘米大小，重12克左右。并有20个金手指定义与Micro:bit完全兼容。集成了25颗全彩LED灯，两上光敏传感器，两个可编程按键，温度传感器，蜂鸣器，MPU-9250 九轴传感器（三轴加速度三轴陀螺仪和三轴磁盘）。GPIO控制定义如下

• 25 LED全彩灯: GPIO4
• Photosen: GPIO36 (Analog A0, upper left), GPIO39 (Analog A3, upper right)
• Button switch : GPIO3sitive sensor5 (Botton A), GPIO27 (Botton B)
• Temperature sensor: GPIO34 (Analog A6)
• Buzzer: GPIO25
• MPU-9250 9-axis sensor: GPIO0, GPIO21(SDA), GPIO22(SCL)

硬件

硬件简介

BPI:bit采用ESP32作为主控模块，ESP32是集成2.4G WiFi和蓝牙双模的单芯片方案，采用超低功耗的40纳米工艺，拥有最佳的功耗性能、射频性能、稳定性、通用性和可靠性，适用于各种应用和不同功耗需求。ESP32采用 Xtensa 32bit LX6单/双核处理器，运算能力高达600DMIPS，内置448KB ROM和520 KB SRAM。

BPI:bit提供丰富的板载资源，支持光敏传感器，数字三轴传感器，数字罗盘，温度传感器接口，金手指接口与micro:bit完全兼容。特别是5X5智能控制LED光源，控制电路和RGB芯片集成在5050个组件的包中。级联端口传输信号单线。三种原色的每个像素都可以实现256亮度显示，完成16777216彩色全彩色显示，扫描频率不低于400Hz/s。配合webduino平台，可以实现炫酷的展示效果。

硬件接口

GPIO PIN针定义

The edge interface is much compatible with those of micro:bit. so you may able to use micro:bit accessories on bpi:bit

HardWare PIN define of BPI:bit
Pin Name	Analog Function1	Analog Function2	Function1	Function2	Power
P3	ADC2_CH4		GPIO13
P0	ADC2_CH8	DAC_1	GPIO25
P4	ADC2_CH3		GPIO16
P5	ADC1_CH7		GPIO35
P6	ADC2_CH5		GPIO12
P7	ADC2_CH6		GPIO14
P1	ADC1_CH4		GPIO32
P8			GPIO16
P9			GPIO17
P10	ADC2_CH9	DAC_2	GPIO26
P11	ADC2_CH7		GPIO27
P12	ADC2_CH2		GPIO02
P2	ADC1_CH5		GPIO33
P13			GPIO18	SPI_SS
P14			GPIO19	SPI_SCK
P15			GPIO23	SPI_MISO
P16			GPIO05	SPI_MOSI
3V3					POWER:3V3
3V3					POWER:3V3
3V3					POWER:3V3
P19			GPIO22	I2C_SCL
P20			GPIO21	I2C_SDA
GND					GROUND
GND					GROUND
GND					GROUND

5*5 25全彩LED灯

BPI:bit have 25 LEDs on board, it can be controlled with a single GPIO.

25 5*5 LED list of BPI:bit
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

MPU9250 9轴传感器

The 9-axis sensor, MPU9250, is placed on the BPI:bit board. and MPU9250 uses I2C 0x69 address.

The 9-axis is the combination of 3 separate triple axis sensors. For more detailed information of this chip, click here MPU 9250 datasheet to view the datasheet.\

BPI-BIT MPU9250 Library and how to : https://github.com/BPI-STEAM/MPU9250

BPI:bit 供电

When you use BPI:bit, you need to supply the board first, and the bit supports three power supply modes

• 1.micro USB port:USB cable power supply, the design of BPI:bit board has Micro USB interface, which is quite common in daily life and is quite convenient to use.
• 2.Battery port:Through 2 pin battery power supply socket, can through the lithium battery, battery pack to power supply board, interface fool proof design, don't worry about the power supply through the 2 pin battery power supply socket, can through the lithium battery, battery pack to power supply board, interface fool proof design, don't have to worry about power supply meet the problem.
• 3.Goldfinger ：Power is supplied through the gold finger, and the gold finger at the bottom of the board contains the power interface. Meanwhile, it has both input and output functions and has high compatibility.

BPI:bit 与 micro:bit 比较表

bpi:bit VS micro:bit
Module	bpi:bit	micro:bit
CPU	Dual-core 32bit Xtensa LX6, up to 240MHz	NXP KL26Z 32bit ARM Cortex M0, up to 16MHz
RAM	520 KB	16 KB
ROM	448 KB	Unkown
Flash	4096 KB	256 KB
Bluetooth	BT4.2 BR/EDR and BLE	BLE only
WIFI	802.11 b/g/n/e/i	N/A
Buzzer	1x Buzzer	N/A
5*5 LEDS	25 intelligent-control full-color (16777216 color) LEDs, Cascading all LEDs by a single line.	25 red LEDs
photosensitive sensor	2 light sensors	Basic light detection function on LEDs
temperature sensor	Stand along temperature sensor	On CPU chip temperature sensor
Motion sensor	MPU-9250 9-axis Motion Tracking : 3-axis accelerometer, 3-axis magnetometer, 3-axis gyroscope	3-axis Accelerometer; 3-axis magnetometer; no gyroscope, no motion processor
IO interface	edge interface (compatible with most micro:bit I/O features)	edge interface
Button	2 programmable buttons	2 programmable buttons
micro USB	1x micro USB(UART)	1 x micro USB(Mass Storage Device)
Software	Webduino, Arduino, MicroPython, Scratch X	Microsoft MakeCode, MicroPython, Scratch X
Size	5*5 cm	5*4 cm

软件

BPI:bit 软件开发规划表与支持应用:

Webduino 软件支持

What is Webduino

Webduino = WebComponents + Arduino

• Webduino introduce (Public)-en.pdf
• Webduino 介绍(公开)-中文.pdf

BPI:bit Webduino 开发

如何使用 :Use BPI:bit with webduino

webduino 参考教程

• BPI:bit Through the photosensitive resistors built into Webduino Bit on the left and right sides, it is easy to determine which side the gesture comes from

code link：https://bit.ly/2lFNeYL

demo : https://www.facebook.com/oxxo.studio/videos/10216710024566280/?t=9

• Using Webduino Bit nine shaft sensor "attitude Angle" + full color dot matrix, simple implementation ~ ^_^ interesting effects

code link: https://bit.ly/2MAhHTF

demo : https://www.facebook.com/oxxo.studio/videos/10216709482752735/?t=20

Arduino 开发

• Arduino IDE & PlatformIO

测试例程

• MPU9250 sample code

MicroPyhton 开发

• Github Wiki Chinese

Scratch 支持与开发

• Base MicroPyhton Scratch

资料与资源

• BPI:bit Webduino Easy How-To's Episode 1: Initial Setup : https://www.youtube.com/watch?v=23_a27N3_7k
• How to Program Esp32 with Arduino IDE with C++ : https://technicalustad.com/program-esp32-with-arduino-ide-with-c/

Github 源代码

• Webduino github

• bpi:bit open soruce github

参考链接

• BPI:bit schematic diagram
• BPI:bit user manual
• BPI:bit dxf file
• ESP32 datasheet
• ESP32 Arduino Tutorial Overview
• Espressif ESP32 Resources
• Espressif ESP-IDF Programming Guide
• MPU9250 datasheet
• More others
• Webduino official website
• Webduino website in China
• Easy to buy bpi:bit sample form aliexpress
• Facebook group
• Maker Pro