Hey,
I've been working on a project of mine and after some advice from others, I have realized that I was using wrong voltage for the MPU9250 module. In every single video I've watched people were using 5V but I've learnt today that you are actually supposed to use 3.3V for the module. Somehow the 5V works aswell but apparently not for everyone, hence I am writing this right now. Anyways, I decided to try using 3.3V pin in my arduino UNO for I didn't want to spend more money on the project. Turns out that it didn't help, I've still ran into the same problem that I've ran inb4 (talked about it in my previous post, if anyone is interested to help/add some of their advice I'll be more than glad to receive it). The only thing I am worried about is that I may have somehow damaged the module by doing so. I used a code for finding I2C address and it did say that it found the adress at 0x68 as its supposed to be. I don't know if that means nothing has been damaged or whatnot, I am a complete rookie in the subject, robotics has been a passion of mine I didn't really indulge much time into due to school. If you could let me know if that means that the module is still working fine/there is a way to check if it's still working properly I'd highly appreciate that .
here's the code I've used to check the i2c address, together with the wiring.
// --------------------------------------
//http://playground.arduino.cc/Main/I2cScanner
// i2c_scanner
//
// Version 1
// This program (or code that looks like it)
// can be found in many places.
// For example on the Arduino.cc forum.
// The original author is not know.
// Version 2, Juni 2012, Using Arduino 1.0.1
// Adapted to be as simple as possible by Arduino.cc user Krodal
// Version 3, Feb 26 2013
// V3 by louarnold
// Version 4, March 3, 2013, Using Arduino 1.0.3
// by Arduino.cc user Krodal.
// Changes by louarnold removed.
// Scanning addresses changed from 0...127 to 1...119,
// according to the i2c scanner by Nick Gammon
// http://www.gammon.com.au/forum/?id=10896
// Version 5, March 28, 2013
// As version 4, but address scans now to 127.
// A sensor seems to use address 120.
// Version 6, November 27, 2015.
// Added waiting for the Leonardo serial communication.
//
//
// This sketch tests the standard 7-bit addresses
// Devices with higher bit address might not be seen properly.
// Watch Video explainign I2C address: https://www.youtube.com/watch?v=bqMMIbmYJS0
//
#include <Wire.h>
void setup()
{
Wire.begin();
Serial.begin(9600);
while (!Serial); // Leonardo: wait for serial monitor
Serial.println("I2C 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");
else
Serial.println("done");
delay(5000); // wait 5 seconds for next scan
}
wiring:
Much appreciate it and have a great day/night
3 posts - 2 participants