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  • NodeMCU ESP8266 12e With GPS & OLED Display

    When I use tinygps library i am getting this in my serial monitor please do helpI have surfed net and done many things but i could not correct it ets Jan 8 2013,rst cause:4, boot mode:(1,7)wdt reset

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  • How to Wire MAX30100 Heart Rate Monitor With Arduino Microcontroller

    I have a doubt....my max30100 is not responding to the I2C scanner codeI have checked my code with other I2C devices the cord works fine but with max30100 it is not workingwhat problem do I have?? please help thanks in advanceMy I2C code,// --------------------------------------// 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...11...

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    I have a doubt....my max30100 is not responding to the I2C scanner codeI have checked my code with other I2C devices the cord works fine but with max30100 it is not workingwhat problem do I have?? please help thanks in advanceMy I2C code,// --------------------------------------// 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.// #include void setup(){ Wire.begin(); Serial.begin(9600); while (!Serial); // Leonardo: wait for serial monitor Serial.println("\nI2C Scanner");} void loop(){ byte error, address; int nDevices; Serial.println("Scanning..."); nDevices = 0; for(address = 1; 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 Serial.print("0"); Serial.print(address,HEX); Serial.println(" !"); nDevices++; } else if (error==4) { Serial.print("Unknown error at address 0x"); if (address 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}

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