Tips-BPI-BIT

BPI:BIT

micro:bit の WROOM32版

http://wiki.banana-pi.org/BPI-Bit

MPU9250 9-axis sensor

MPU9250 uses I2C 0x69 address

# Check I2C communication..
#include <Wire.h>
 
void setup()
{
 Wire.begin();

 Serial.begin(115200);       
 while (!Serial);             
 Serial.println("\nI2C Scanner");
} 

void loop()
{
 byte error, address;
 int nDevices;

 Serial.println("Scanning...");

 nDevices = 0;
 for(address = 1; address < 127; address++ ) 
 {
   // The i2c_scanner uses the return value of
   // the Write.endTransmisstion to see if
   // a device did acknowledge to the address.
   Wire.beginTransmission(address);
   error = Wire.endTransmission();

   if (error == 0)
   {
     Serial.print("I2C device found at address 0x");
     if (address<16) 
       Serial.print("0");
     Serial.print(address,HEX);
     Serial.println("  !");

     nDevices++;
   }
   else if (error==4) 
   {
     Serial.print("Unknown error at address 0x");
     if (address<16) 
       Serial.print("0");
     Serial.println(address,HEX);
   }    
 }
 if (nDevices == 0)
   Serial.println("No I2C devices found\n");
 else
   Serial.println("done\n");

 delay(5000);           // wait 5 seconds for next scan
}

https://qiita.com/naninunenoy/items/bf96f5ca34aacf347a9e

https://x-io.co.uk/open-source-imu-and-ahrs-algorithms/

KiCAD microbit-edie-conector

https://github.com/anthonykirby/kicad_microbit_connector

http://wiki.banana-pi.org/BPI-Bit

GPIO sensers

HardWare PIN define of BPI:bit