Save Arduino Sensor Data to MYsql Using Processing

About: Dreamer...

Honestly its hard to store Arduino data to MySQL directly so that in addiction to Arduino IDE i used Processing IDE that is similar to Arduino IDE but with lot of different usage and you can able to code it in java.

Note:don't run Arduino serial monitor while running processing code because port conflict will occur as both have to use the same port

You Need:

  1. Arduino Uno/Mega or clone
  2. Wamp server
  3. Processing IDE 2.2.1 (don't use greater than that)
  4. BezierSQLib-0.2.0 library for processing (Download link below)
  5. sensor (I used LDR and LM35 to measure light and temperature)

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Step 1: ​Setting Arduino

Burn the below simple demo code to arduino that will act as a sender.,

void setup()
{ Serial.begin(9600); }

void loop() { int i=0,j=0; i=analogRead(A0); j=analogRead(A1); Serial.print(i); Serial.print(","); Serial.println(i); }

Step 2: ​Setting Up the MySQL

  1. Install Wamp server for MySQL and configure it to store data
  2. Run wamp server
  3. open MySQL console
  4. select database
  5. Then create the table for your data
create table data(sno int(4) primary key auto_increment,LDR int(4),TEMP int(4));

use desc your_table_name to display table details

desc data;

That's all for DB now we can move to processing...

Step 3: Setting Up Processing IDE

  1. Download and Install the Processing IDE 2.2.1
  2. Extract the above given ZIP to MyDocuments/Processing/Libraries
  3. Now open processing IDE and check the library is installed correctly or not as in the above image
  4. Then Copy the below code to processing and name it of your own

ARDUINO TO MYSQL THROUGH PROCESSING Read Serial messages from Arduino then write it in MySQL. Author : J.V.JohnsonSelva September 2016 */

import*; //import the MySQL library import processing.serial.*; //import the Serial library

MySQL msql; //Create MySQL Object String[] a; int end = 10; // the number 10 is ASCII for linefeed (end of serial.println), later we will look for this to break up individual messages String serial; // declare a new string called 'serial' . A string is a sequence of characters (data type know as "char") Serial port; // The serial port, this is a new instance of the Serial class (an Object)

void setup() { String user = "root"; String pass = ""; String database = "iot_database"; msql = new MySQL( this, "localhost", database, user, pass ); port = new Serial(this, Serial.list()[0], 9600); // initializing the object by assigning a port and baud rate (must match that of Arduino) port.clear(); // function from serial library that throws out the first reading, in case we started reading in the middle of a string from Arduino serial = port.readStringUntil(end); // function that reads the string from serial port until a println and then assigns string to our string variable (called 'serial') serial = null; // initially, the string will be null (empty) }

void draw() { while (port.available() > 0) { //as long as there is data coming from serial port, read it and store it serial = port.readStringUntil(end); } if (serial != null) { //if the string is not empty, print the following //Note: the split function used below is not necessary if sending only a single variable. However, it is useful for parsing (separating) messages when //reading from multiple inputs in Arduino. Below is example code for an Arduino sketch a = split(serial, ','); //a new array (called 'a') that stores values into separate cells (separated by commas specified in your Arduino program) println(a[0]); //print LDR value println(a[1]); //print LM35 value function(); } }

void function() { if ( msql.connect() ) { msql.query( "insert into data(LDR,Temp)values("+a[0]+","+a[1]+")" ); } else { // connection failed ! } msql.close(); //Must close MySQL connection after Execution }

Step 4: Executing the Program.

Run the program by clicking the run button don't close the popup window closing will stop execution and below query to view stored data in MySQL...

select * from data;

To view number of data inserted use the below query..

select count(*) from data;

Step 5: Conclusion

I would like to thank you for reading my tutorial. I would appreciate if you found it useful and drop a like (favorite) or ask me anything as it keeps me motivated to do these instructables. feel free to ask any questions that you need to know...

Happy Coding Arduino...

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    23 Discussions

    Aleena J

    Question 3 months ago on Step 5

    How to extract data from a sensor to raspberry pi and make MySQL database using Node-RED?


    Question 4 months ago on Step 6

    Using driver com.mysql.jdbc.Driver 3.1
    SQL.query(): java.sql.SQLException.
    insert into data(LDR,TEMP)values(HuHumidity: 99.90 %, Temp: 30.60 Celsius
    java.sql.SQLException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ': 99.90 %, Temp: 30.60 Celsius
    )' at line 1
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(
    at com.mysql.jdbc.MysqlIO.sendCommand(
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(
    at com.mysql.jdbc.Connection.execSQL(
    at com.mysql.jdbc.Connection.execSQL(
    at com.mysql.jdbc.Statement.execute(
    at Source)
    at Source)
    at sketch_190603a.function(
    at sketch_190603a.draw(
    at processing.core.PApplet.handleDraw(
    at processing.core.PGraphicsJava2D.requestDraw(
    at Source)

    I am having this error and i tried to tweak the code but nothing happens.
    What am i suppose to do? Any help will be appreciated :)

    1 answer

    try this SQL Query
    insert into data (LDR,TEMP) values (99.90 %,30.60)

    if your Temp value is declared as Varchar instead of int you can also use
    insert into data(LDR,TEMP)values(99.90 %,30.60 Celsius)


    1 year ago

    No library found for
    Libraries must be installed in a folder named 'libraries' inside the 'sketchbook' folder. Received fatal alert: protocol_version
    at Source)
    at Source)
    at Source)
    at Source)
    at Source)
    at Source)
    at Source)
    at Source)
    at Source)
    at Source)
    at Source)

    what is wrong am try to install lib

    1 reply

    9 months ago

    Hi thanks for the instruction.... Can you help me give some steps for me to create a potrait remediation with sensor detact using processing and arduino ?

    1 reply
    Johnson SelvaJosephJ107

    Answer 1 year ago

    sure it will but you need some changes in the code about remote configuration as same as your normal java program.


    1 year ago

    Thank you so much, your instruction helped so much. I spent 8 hours looking for something that works. Stumbled on your post, and it worked perfectly. Thank you so much, you helped me find the answer. THANK YOU :)

    1 reply
    Johnson SelvaMinhT67

    Reply 1 year ago

    Glad you are here dude. thanks for your valuable comment.


    Question 1 year ago on Step 5

    i'm getting the following error:-

    This version of Processing only supports libraries and JAR files compiled for Java 1.6 or earlier. A library used by this sketch was compiled for Java 1.7 or later, and needs to be recompiled to be compatible with Java 1.6.

    I'm using the older version, i.e. processing IDE 2.2.1. What to do?

    1 answer
    Johnson Selvaanjali27

    Answer 1 year ago

    Sorry for the late response anjali . i have a solution for that if you are still facing the same problem let me know i will help you for sure... for that you need to tricking the IDE. will add the tutorial soon today..


    Question 1 year ago on Step 5

    I am using three sensors and mysql console window returns an empty set when I use the command mysql> select * from data;

    mysql> Empty set (0.00 sec).

    Can you please help me with this?

    Thank you in advance

    Screenshot (52).png
    1 answer

    Question 1 year ago on Step 4

    This version of Processing only supports libraries and JAR files compiled for Java 1.6 or earlier. A library used by this sketch was compiled for Java 1.7 or later, and needs to be recompiled to be compatible with Java 1.6.

    how to resolve this error

    1 answer

    Question 1 year ago on Step 5

    i followed the instructions above.i have an problem.the data read at the arduino is getting transmitted to processing ide.but the field and values are not stored in the to rectify it?

    2 answers