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The Arduino Uno is a microcontroller board based on the ATmega328 and created by Massimo Banzi.

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Curve Fit on Arduino

It is possible to put this library and function on an Arduino? http://rosettacode.org/wiki/Polynomial_regression#C I need to curve fit 5 points. Has anyone done this before? This was the best I ...
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6 views

How to use Google Voice recognition API in your android app to send a Data string to arduino

Here is my code, i want to turn on LED using voice recognition But i am getting error on line 366 i am getting error at voice_output() method. package com.example.home_automationv2; import ...
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18 views

Arduino GSM(SIM900) tcp server

I start TCP server with arduino GSM SIM900 Here is SIM900 library http://www.gsmlib.org/download.html and this is my GMS modem: #include "SIM900.h" #include "SoftwareSerial.h" #include "inetGSM.h"; ...
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1answer
34 views

Identified amplitude in secret knock project

I'm doing project like this http://grathio.com/2013/11/new-old-project-secret-knock-drawer-lock/ The project only process time interval between knock, and I try to add amplitude as input, if I just ...
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1answer
23 views

Arduino Uno Code Creates Incorrect Time Values

Hello I have an Arduino Uno board that I got recently and I am trying to run a stopwatch function on the board. I have two momentary pushbuttons. When the first button is pressed it stores the amount ...
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24 views

Arduino not connecting to computer after working before

I bought my Arduino Uno R3 a few months ago. It's been working like a charm since then, but today, it stopped interfacing with my computer. Let me be more specific. I have a 2013 Macbook Pro Retina ...
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15 views

Trouble loading code to Arduino board from Mac OSX Mavericks

I have an Arduino Uno and code was loading fine yesterday but today I am consistently getting the following error (shown by setting the upload section to verbose) avrdude: Version 5.11, compiled on ...
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15 views

Connecting Arduino Uno with Ethernet shield to parse.com database

Hey I'm new to Arduino programming, I was wondering how i can connect my device to store data to parse.com. I know the REST API Key but not sure one what to do. Any help would be appreciated, and if ...
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1answer
24 views

Arduino programming modes, bootloader, Arduino as ISP

I am currently working on a project using an Arduino Uno (rev3) board. Eventually I might let it run independantly from Arduino and that got me thinking how the whole programming and bootloader stuff ...
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1answer
15 views

Arduino sound effects need assistance

Hello! I'm making a portable game with arduino and i need to play audio files. I have them ready in my computer but i want to know if there are any ways to put them inside arduino and play them in a ...
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0answers
15 views

mouseClicked in Processing is not recognized

I have 8 simple analog soil sensors hooked up to a 16-channel analog multiplexer for a garden project. The Sensors are read through an Arduino Uno. Also attached to the Arduino are a temperature and ...
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1answer
59 views

arduino error: expected ',' or '…' before numeric constant

I am new to arduino and C++ and am running into the above error. It seems pretty self-explanatory, however I can't find the missing comma within the code. The code worked fine before I added the ...
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45 views

Define Loud and Soft Volume of Sound

Analog_Read() in Arduino range from 0-1023. If I'm using a Piezo Buzzer, how I can define from range 0-1023 that the sound I read are Loud or Soft? I'm already testing it (basic Piezo Buzzer and ...
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1answer
18 views

parsing json response from serial window

Hi i'm trying to parse JSON resposne from webserver in my arduino in order to turn on and off a LED light. I'm using the wifi client repeating example to make a get request to my server: ...
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1answer
23 views

Json parsing with arduino uno

Hi I was wondering if there is a way to parse json response from a server. I'm using arduino uno with a wifi shield. Also is it advisable to process json? I read that the uno may have too little ...
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1answer
22 views

Android and BarTender Arduino 1.0.5-r2

I am creating drink using Android nexux5 and Arduino Board. When I send the data from android device to Arduino Board It giving me the output "Evt disconnected Advertising time out error" I am ...
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1answer
31 views

Why does it puts error: expected constructor, destructor, or type conversion before 'void' in arduino uno code?

This code is for opening four leds when the switch is opened, and depending on the temperature there are two more leds opened or closed, one red and one green. const int sensorPin = A0; type void ...
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27 views

Microcontroller resets in the middle of the program

I am using an Arduino UNO board with atmega 328 microcontroller in it. I have interfaced a SPI ASIC with it also i have interfaced a UART communication with GSM/GPRS module. My Programming is running ...
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10 views

arduino cannot connect to network

Hi I just bought a wifi shield and I cannot connect to my wireless network (WPA2). I used the sketch from the arduino site for connecting to WPA network and put my SSID and password on but it doesn't ...
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0answers
18 views

Arduino wifi shield cannot find IP address

Hi i'm trying to access my wifi shield's ip address on the browser but I keep getting Oops! Google Chrome could not connect to "IP ADDRESS". Things I've done: 1.)Updated firmware on wifi shield ...
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1answer
19 views

2 PIR motion sensors +Arduino

My project is to allow automatic lightening by detecting motion using PIR Sensors. THis is what I want to do : when the first motion sensor "inputpin" is HIGH which means a motion1 is detected , ...
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2answers
72 views

Can I Optimize this code with better array manipulation?

I have a byte array of a certain size. I would like to grab it's last four bytes and put them next to each other to form a four byte hexadecimal value, in a variable. This way I can compare a ...
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1answer
14 views

Arduino upgrading firmware

Hi I'm trying to upgrade firmware on my wifi shield by following the http://arduino.cc/en/Hacking/WiFiShieldFirmwareUpgrading instructions for mac. I was wondering what this means? "Connect a jumper ...
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29 views

Arduino Uno + Arduino Gsm sheild

**Dear All: i need a help for my project based on Gsm shield.. i want to switch ON and OFF any 4 appliance using SMS even with /DTMF call. Task 1: doing sms like "appliance 1 on" or ...
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1answer
74 views

Programming Arduino with ADXL345 to raise interrupt on inactivity

I need to use a sparkfun breakout board ADXL345 to detect when my motor system has stopped vibrating. I am also using a Sparkfun RedBoard (Arduino uno). Things I am doing to configure for this ...
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2answers
31 views

How do I make my speakers as an output on Arduino?

I want to use the readings off an LDR to dictate the sound. I know have to do this with a buzzer in my circuit and I know how to call my speakers in java, but I don't have any idea how to do this in ...
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21 views

Send Video from Arudino to Android

I need some help in transferring video stream from my Arduino using Arducam , to an application on my Android phone. Note that I'm using Bluetooth module for communication between Android and ...
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1answer
40 views

Wait for Input before continuing - Arduino Uno

I'm making a basic sports game scorer (Squash/Racketball) using an Arduino Uno. The aim is, 2 buttons, 1 player each has a button that they can increment the score with. That's simple enough, however ...
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1answer
30 views

Display my foursquare checkins on a LCD screen using Raspberry PI.Suggest which foursquare api should I use to fetch data about my check in's

Want to display my recent 5 check in on a LCD screen using raspberry pi. I am newbee in web development. Could any one please help me to know which foursquare restful service will be use full for this ...
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56 views

Plotting Moving axis of realtime signal from arduino

I am new to matlab and I am finding it difficult to define an argument to plot a moving axis especially x-axis with xlim. I am getting a real-time signal from arduino and want to plot it against time. ...
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28 views

chrome.serial with Arduino Uno

I'm storing information on Arduino Uno and then, when i plug the Arduino to the pc, I want google chrome to read incoming serial data(). I found Google's api http://developer.chrome.com/apps/serial, ...
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1answer
77 views

MG811 CO2 wiring help Arduino

I have a CO2 sensor with 4 pins. VCC, DOUT,AOUT, GND. Where does the VCC, AOUT, and DOUT wire to? I found no wiring manual when I purchased this sensor off of ebay. I have gone to this link where ...
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1answer
50 views

sending gps data using icomsat v1.1

I am doing my final year project that tracks the vehicle and displays the position on google maps,am using an arduino,GPS module and icomsat v1.1 GPRS module.Am trying to send the GPS data to a web ...
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1answer
67 views

Writing to Mifare Ultralight C with PN532 library for Arduino Uno

I imitate the sample code to read from MifareUltralight and write to MifareClassic, with the definition in .h file: #define PN532_RESPONSE_INDATAEXCHANGE (0x41) #define MIFARE_CMD_WRITE ...
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Can't Send data to arduino using java

I have been trying to send just a character to arduino using java gnu.io library.It can read data from the serial port sent by the arduino but cant send data to the serial port.Here is my code where I ...
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1answer
35 views

MCU/Arduino RESET

I have below setup. I found that My arduino Getting restarted again. I have Arduino board , lCD Display, SENSOR. The Sensor and LCD Display SHARE common ground and 5v supply from 7805 IC and Arduino ...