BPI-Bit STEAM 教育开发板

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Revision as of 18:35, 14 October 2018 by Sinovoip (talk | contribs) (MPU9250 9轴传感器)
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BPI:bit介绍

Overview: BPI:bit
BPI-UNO32 with ESP32 design
Overview: BPI:bit
Overview: BPI:bit for Webduino

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

A BPI-Bit.jpg

BPI:bit 主要功能介绍

Webduino web ch 1.png

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
  • 光敏传感器: GPIO36 (Analog A0, upper left), GPIO39 (Analog A3, upper right)
  • 按键控制 : GPIO35 (Botton A), GPIO27 (Botton B)
  • 温度传感器: GPIO34 (Analog A6)
  • 蜂鸣器: GPIO25
  • MPU-9250 九轴传感器: 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

Bpi bit 接口图.JPG

GPIO PIN针定义

BPI:bit金手指GPIO定义与micro:bit兼容. 可以使用micro:bit的GPIO扩展板配件。

BPI:bit 金手指接口定义
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 有25颗全彩LEDs灯, 并且能用单GPIO控制.

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

BPI:bit集成了九轴传感器:MPU-9250, 使用I2C 接口控制,控制地址为:0x69 .

MPU-9250 9轴是3个独立的三轴传感器的组合。有关此芯片的更详细信息请下载规格书MPU 9250 规格书

BPI-BIT MPU9250 代码及使用手册 : 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:

BPI bit map wiki.png

Webduino 软件支持

What is Webduino

Webduino = WebComponents + Arduino

Webduino.png

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

测试例程

MicroPyhton 开发

Mircopython.png

Scratch 支持与开发

资料与资源

Github 源代码

参考链接