The process of designing and writing source code as part of a program (or sketch) for Arduino. Do not use for uploading to an Arduino board.
0
votes
0answers
14 views
Open loop solar tracking system
I am trying to build open loop solar tracking using actuator . My algorithm gives degree of solar position 9AM as -45 degree and 4PM as +45 degree with actuator system .since i don't have any feedback ...
-2
votes
0answers
33 views
How to set alarm of RTC through my smart phone using bluetooth module with arduino [on hold]
I am facing problem in my next task of the project which is to set the alarm time of RTC through my smart phone here is the code for this task.
#include <Time.h>
#include <TimeAlarms.h>
...
2
votes
1answer
46 views
Why is my real time clock getting the wrong time from my PC?
I want my real-time clock to set its time as the time on my PC. However, when I run the following sketch, the real-time clock reports the time as being 32-33 seconds earlier than my PC says the time ...
0
votes
0answers
44 views
Leonardo based Tachometer?
I'm new here. I'm not a native speaker, so pardon me for my English .
Just received my Arduino Leonardo today. I tried some basic calculations and stuff like blinking and lcd interfacing.
Its ...
3
votes
1answer
73 views
What is causing my Uno to wake up?
NOTE: this code was working perfectly fine in another program.
I have a simple piece of code that puts the Arduino to sleep. When it is finished and intergrated into my project, it will only wake the ...
4
votes
1answer
33 views
Sending MIDI messages using PING ultrasonic sensor
I am working on a project that uses a potentiometer and an ultrasonic sensor to create MIDI signals. This is my first time working with an arduino. I took a class in C++, but am teaching myself some C ...
2
votes
2answers
266 views
How can I make my Arduino code work?
I am trying to make an automatic lock which stays open during different times and on different days. I want the door open Monday through Friday 8am to 5pm. On Saturdays and Sundays I want the door ...
1
vote
0answers
58 views
MCP7940 RTC Library
I am looking to implement a Microchip MCP7940 real time clock into my sensor data logging circuit that I have based on the Uno. Would the most logical solution be to attempt at changing an existing ...
2
votes
0answers
44 views
Bluetooth Master and Slave to track device's locations
I'm trying to create an app for my science fair that uses bluetooth to track people in a determined place.
I was thinking about one Arduino system to receive all the information and transmit through a ...
0
votes
1answer
49 views
Functions with string parameters
Inside my main loop there is this string:
String string1;
I have a function that will take string1 as parameter, and use it to send this string as SMS.
sendSMS(string1);
This is the sendSMS() ...
0
votes
1answer
31 views
Unexpected behavior of sprintf with i32/u32
I'm trying to build a string of characters from several elements given by the TinyGPS++ library with the use of sprintf().
This is my code making the string and printing it in the serial monitor.
...
1
vote
2answers
35 views
appending string to char and vice versa
Some days ago i started a thread.
concatenation of non constant character array with a sting
I have a different question but on the same nature (string and chars)
what i want is one variable (string ...
1
vote
2answers
50 views
concatenation of non constant character array with a sting
I have an arduino duemilanove.
I read this page on string concatenation. http://arduino.cc/en/Tutorial/StringAdditionOperator
Yet, it didnt include my case.
I have a non constant character array, ...
1
vote
1answer
59 views
Trouble with variable types and integrating DHT11 temperature sensor
I am trying to modify this sketch;
https://github.com/itsallvoodoo/home_automation/blob/master/Arduino_HVAC_Controller/HVAC_Controller/HVAC_Controller.ino
But I have a different temperature sensor, a ...
1
vote
0answers
25 views
Arduino Uno wiring and code with Parallax PMB-688
I'm new to Arudino GPS and am wondering if I could be pointed in the right direction regarding code and wiring when hooking up my Parallax PMB-688 to an Arduino Uno
2
votes
2answers
42 views
Code flow for precission applications
This is a question about programming. Mainly about the loop() function
As an example
Consider code where you get data from an accelerometer, and if the Gs are high enough you do something.
Consider ...
1
vote
2answers
50 views
No usb serial on Mac
I've been using my Arduino UNO without a hith for a few days now, but suddenly I can't program it anymore.
When I try to programm my Arduino on Mac, I get the following Error:
avrdude: ...
-1
votes
2answers
23 views
Keyboardmessage on Arduino UNO
Can an Arduino UNO and Arduino Leonardo do the same things?
Some of the examples in the Arduino software say to use Leonardo e.g. KeyboardMessage.
1
vote
4answers
91 views
How to integrate smoothing into project (HVAC thermostat / controller)
I am working on building a "simple" HVAC thermostat. This is my current sketch.
// include the libraries for gizmos
#include <LiquidCrystal.h>
#include <dht11.h>
dht11 DHT11; // ...
1
vote
0answers
62 views
RF missing characters
I've got two arduino nano devices connected via RF 433 MHz. The modules are MX-05V and MX-FS-03V. I'm using VirtualWire for sending and receiving. The speed is set to 1000 bps.
One has got a pir ...
0
votes
1answer
59 views
How does this code work?
I've found this code below, but I can't figure out how it works. Can someone explain to me the flow of the program?
#include <LiquidCrystal.h>
LiquidCrystal lcd(2, 3, 10, 7, 5, 4);
int mem=0;
...
0
votes
1answer
44 views
Unable to light up all the LEDS connected to Arduino using processing
I have 3 LEDs connected to my arduino which are controlled via laptop key presses with processing.
While the LEDs are able to light up when the respective buttons are pressed, i am unable to light up ...
1
vote
1answer
33 views
Reading text/strings via processing
I'm trying to control an led attached to my arduino via key presses on my laptop.When i hold down a key, the led should light up, and when i release the key, the led should turn off.
While my code ...
1
vote
0answers
22 views
jQuery Validation overriding PHP backup validation [closed]
I have a form that I have specific PHP validation, but took the easy route and used validate.jquery for real time validation. My php strips white spaces and doesn't allow certain characters, but when ...
4
votes
4answers
293 views
Reducing lag between the arduino and a processing sketch on my computer
I'm currently on project #14 of the arduino project book.
I'm trying to control a processing sketch on my laptop using my arduino.This is accomplished by using a potentiometer to control the ...
2
votes
2answers
206 views
Asynchronous function calls in Arduino sketch
In an Arduino sketch, is there a way to make asynchronous function calls within the loop? Like listening to requests through http server and process them in a non-blocking way.
1
vote
0answers
50 views
Can I port Arduino code to other chips? [closed]
How could I port Arduino code to other embedded boards? For instance, I am working on a project using openPicus. I want to port the Arduino code to openPicus. How could I do this?
-2
votes
1answer
36 views
timestramp in arduino
int sensorArray[32] ;
int selectPinZero = 8;
int selectPinOne = 9;
int selectPinTwo = 10;
int selectpinthree=11;
int Enablepin=7;
int inputPinOne = 0;
int inputPinTwo = 1;
int sensor1;
int ...
2
votes
4answers
114 views
How to loop over analog pins?
I want to do something along the lines of
for (int i = 0; i < 4; i++) {
analogRead(i);
}
Which appears to work, but the following does not:
for (int i = 0; i < 4; i++) {
pinMode(i, ...
0
votes
0answers
15 views
How to create time frame in arduino [duplicate]
Dear all.
This my circuit i build. Here i am using arduino UNO Board to read the values.
Question are
How to create time frame here. In arduino timer library available . Where function like ...
1
vote
1answer
84 views
Timer1 stops firing
I am trying to use interrupts to play notes on a speaker. Timer2 works fine, but after about 15 seconds, Timer1 stops firing for about 5 seconds, and then it comes back on. If I keep running the ...
1
vote
2answers
103 views
portd not writing on digital ports 5 and 7
I try to build a function generator (preferably a sine) with an R-2R ladder and a Arduino Leonardo by Borderless Electronics.
For performance reasons one should use portd instead of digitalWrite.
...
3
votes
2answers
47 views
Convert a Bitstring into an integer value
I have got a String filled up with 0 and 1 and would like to get an Integer out of it:
String bitString = "";
int Number;
int tmp;
bitString = "";
for (i=1;i<=10;i++)
{
tmp= analogRead ...
3
votes
2answers
108 views
Allocate object memory statically; intialize it dynamically?
I have an object whose constructor gets passed a parameter. If I know the parameter value at compile time, I can construct the object statically:
static FOOOBJ foo(3);
(I understand that it isn't ...
1
vote
4answers
491 views
Can I turn off a device using the 5V and analog pins?
Could I connect a device that requires minimum 5V 1A from the 5V Pin to the Ground and somehow turn it off inside a sketch?
edit: I'm using a Due based boad, the digix ...
0
votes
1answer
114 views
how does serial port communication work under the hood?
im just looking for how to send/ write date to pc over serial port from arduino..vice versa.
I have few Question to ask after taking so much time and couldn't figure it out myself. I hope you guys ...
0
votes
2answers
52 views
Processing Input
How to make an input from computer using processing (like a password form) and trigger pin in arduino?
If you let some link to read more that would be very helpful.
2
votes
1answer
82 views
Reverse turning of Stepper motor
I have a stepper motor connected to my Arduino like this using the ULN2003A Darlington Array:
(Ignore the potentiometer)
And I have programmed it with the following code:
#include ...
5
votes
2answers
122 views
How to write makefile-compatible sketches?
I'd like to write my sketches so that I can either build/upload them using the Arduino IDE, or optionally using GCC and a makefile.
I know about including the function declarations at the top, but is ...
0
votes
2answers
152 views
IR controlled light dimmer
I am doing a project on Arduino controlled light dimmer circuit...
I have a separate circuit for zero crossing detector and IR receiver but when I am combining both of them in arduino then my IR ...
0
votes
2answers
141 views
Default value of global variables not set
I am tracking a bug in the Marlin source code.
Background
Just for those who is not familiar with Reprap 3D printer and G-code. Marlin is a firmware that control a Reprap 3D printer. It receives ...
5
votes
2answers
284 views
Manchester Library Won't Compile for Attiny85
I am creating a wireless sensor using an Attiny85. I want to send the data to an arduino uno, so I purchased the 315mhz rf link kit from spark fun. Since the Attiny85 does not have a TX I decided to ...
3
votes
1answer
76 views
Check contents of buffer after serial read
I would like to test the contents of data received over a serial connection. In my loop() I store the data in bffr; and afterwards I would like to test to see if there are some predefined words in it.
...
3
votes
1answer
172 views
strange behaviour of dtostrf()
I'm trying to program a little bit in Arduino, but I'm stuck with probably something trivial.
This is what I have:
char ang[3], lat[9];
dtostrf(GPS.angle, 3, 0, ang);
dtostrf(GPS.latitude, 9,5, ...
4
votes
1answer
122 views
It is possible to run an entire script on the Linux side? If so, how, what and where to do that?
I am new to using Arduino Yun and I would like to know if it is possible to run an entire script on the Linux side. In my case the script should execute a HTTP request to a remote server, parse the ...
3
votes
1answer
83 views
It is possible to program Linino to send HTTP requests and then use the returned values in sketch?
I am new to using Arduino Yun and I would like to know if it is possible to run a command from the Arduino sketch in order to make (probably, through the Bridge Library) Linino to execute a HTTP ...
2
votes
2answers
386 views
How to program a CAN-BUS Arduino shield to control car windows?
My project is to control car windows using voice recognition. I have successfully controlled some LEDs using the EasyVR Arduino shield using and Arduino MEGA. Now I want to take control of the windows ...
2
votes
0answers
110 views
Response of Modbus Protocol
I have the below code. This code is successfully compiling and uploading, but I am not getting any response from Slave. What do I need to do?
Some time data being received from Slave (I get this ...
-1
votes
3answers
130 views
Pass variable in a url
Working on a code where I am able to manually enter the value in the url to let the php code save it in the database. But unsure how to it with a variable in a loop running. This is the URL:
...
0
votes
0answers
102 views
MODbus response for configure data
I am not able to receive data. I am able to send data from master but am not getting any response. This program uploaded successfully. I have below setup to monitor data from Modbus.
I have included ...
