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Arduino Scanner Code to check I2C device
/*
CircuitMagic.com
*/
#include <Wire.h>
void setup()
{
Wire.begin();
Serial.begin(9600);
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("Unknow 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
}
Your code should say #include .
hi, great tutorial !
one bug i found:
in your I2C_scanner code above in line number 5 it says:
#include
but should be
#include
best
oliver
sorry for the mess 😉
the correction should include the Wire.h header after #include (enclosed in html tags, maybe that’s why it’s also missing in your script as they are reserved characters in html)
#include <Wire.h>
Nice video, I just wanted to let you know I ran into a couple bumps but worked through them. One the I2C scanner is very nice but I needed to add the ” after include to the above sketch. Also there was an additional library needed . Once I installed that it was all good. Thanks for this info it was very good.
I really appreciate the videos you are putting out. I noticed in your source code (at least in Chrome) the filename is missing likely due to the angled brackets being used? I didn’t check source but that’d be my first guess. Anyway thanks again for making great content, hope to see more!
iam getting an error in the code what should i do.Iam getting it as wire.begin(); was not declared in the scope
dont make full upload the proper code #incloude wire . h
#include is missing in the above code
#include “Wire.h”
#include “Wire.h”
Add Wire.h