I want to insert a 9V battery into an arduino with a DC plug and run a compiled program.
I am making a program called MPU6050 with an accelerometer and SD module, and I want to write the accelerometer values that the MPU6050 expels to the SD card. However, I don't know how to compile and run the program when it is powered from the battery.
-Situation.
When powered from a PC, the data output and writing are working well. When the battery is connected and powered, I don't think it is connected to the PC, but how do I do the compilation etc.? The circuit diagram is as shown in the reference diagram.
(mpu6050) to (Arduino)
VCC to5V
GND to GND
SCL to A5
SDA to A4
(SD card adapter) to (Arduino)
CS to 4
SCK to 13
MOSI to 11
MISO to 12
VCC to 5V
GND to GND
The program is shown in the below. This program runs properly via a PC.
#include "I2Cdev.h"
#include <SPI.h>
#include <SD.h>
#include <stdio.h>
#include <Wire.h>
#include "MPU6050.h"
MPU6050 accelgyro;
//#include <time.h>
unsigned long time;
int16_t ax,ay,az,gx,gy,gz,temperature;
File myFile;
void setup() {
Serial.begin(9600);
Wire.setClock(400000);
Wire.begin();
Wire.beginTransmission(0x68);
Wire.write(0x6B);
Wire.write(0x00);
Wire.endTransmission();
Wire.beginTransmission(0x68);
Wire.write(0x1C);
Wire.write(0x10);
Wire.endTransmission();
Wire.beginTransmission(0x68);
Wire.write(0x1B);
Wire.write(0x08);
Wire.endTransmission();
Wire.beginTransmission(0x68);
Wire.write(0x1A);
Wire.write(0x05);
Wire.endTransmission();
// 初期化
accelgyro.initialize();
delay(10);
// 計測範囲を2000 deg/secに設定、16.4 LSB/deg/s
accelgyro.setFullScaleGyroRange(MPU6050_GYRO_FS_2000);
delay(10);
accelgyro.CalibrateGyro();
accelgyro.CalibrateAccel();
// Open serial communications and wait for port to open:
//. Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.print("Initializing SD card...");
if (!SD.begin(4)) {
Serial.println("initialization failed!");
while (1);
}
Serial.println("initialization done.");
// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.
myFile = SD.open("test.txt", FILE_WRITE);
// if the file opened okay, write to it:
if (myFile) {
Serial.print("Writing to test.txt...");
myFile.println("testing 1, 2, 3.");
// close the file:
myFile.close();
Serial.println("done.");
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
// re-open the file for reading:
myFile = SD.open("test.txt");
if (myFile) {
Serial.println("test.txt:");
// read from the file until there's nothing else in it:
while (myFile.available()) {
Serial.write(myFile.read());
}
// close the file:
myFile.close();
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.csv");
}
}
void loop() {
Wire.beginTransmission(0x68);
Wire.write(0x3B);
Wire.endTransmission();
Wire.requestFrom(0x68, 14);
while (Wire.available() < 14);
ax = Wire.read() << 8 | Wire.read();
ay = Wire.read() << 8 | Wire.read();
az = Wire.read() << 8 | Wire.read();
gx = Wire.read() << 8 | Wire.read();
gy = Wire.read() << 8 | Wire.read();
gz = Wire.read() << 8 | Wire.read();
temperature = Wire.read() << 8 | Wire.read();
time = millis();
//Serial.println(time);
File dataFile;
dataFile = SD.open("AcGy.csv", FILE_WRITE);
Serial.print(time);Serial.print(",");
Serial.print(ax/16384.0); Serial.print(",");
Serial.print(ay/16384.0); Serial.print(",");
Serial.print(az/16384.0); Serial.print(",");
Serial.print(gx/131.0); Serial.print(",");
Serial.print(gy/131.0); Serial.print(",");
Serial.println(gz/131.0);
dataFile.print(time); dataFile.print(",");
dataFile.print(ax/16384.0); dataFile.print(",");
dataFile.print(ay/16384.0); dataFile.print(",");
dataFile.print(az/16384.0); dataFile.print(",");
dataFile.print(gx/131.0); dataFile.print(",");
dataFile.print(gy/131.0); dataFile.print(",");
dataFile.println(gz/131.0);
delay(10);
dataFile.close();
//exit(0);
}
