The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328 microcontroller.
0
votes
1answer
20 views
String comparison
I have simple code written in arduino. I am sending serial command via comma separated values. I have string in format. if the first 2 comma separated value from PC matched then only Send New_String ...
-1
votes
0answers
6 views
Serial read and write function
I have simple serial parse code like below.
const byte numChars = 32;
char receivedChars[numChars];
char tempChars[numChars]; // temporary array for use when parsing
// variables to ...
1
vote
0answers
23 views
Arduino Morse decode Project suggestion and rectification required?
Ive been developing a project that takes the input fromt the users breathe in morse format and converts intro english sentences and interpret them as audio signals and play the whole sentence. Almost ...
0
votes
0answers
14 views
APA102 LEDs and WS2801B LEDs both acting weird with simple Arduino circuit
I just got an Arduino as well as some LEDs and a 1Sheeld to interface with my Android. I set up a pretty complex program before I got the LEDs and it wasn't acting the way I thought it would. So ...
0
votes
0answers
20 views
Trying to control stepper motor using 555 IC and Arduino
I have been searching for cicuit diagrams or something like that, that allows me to run a stepper motor using the 555 Timer IC. I cant order a L298 H-Bridge because its not available where I live. An ...
0
votes
0answers
18 views
Sensor yields random readings when powered with battery but works perfectly with USB
I have noticed this strange behavior , whenever i power the sensor with battery it throws some random readings but when powered with 5V Arduino Pin (when arduino is powered with USB or power ...
0
votes
0answers
11 views
Arduino not communicating with adafruit fona SIM808 module
i have uploaded my code to the SIM808 board but the serial monitor is displaying "couldnt find FONA"
#include "Adafruit_FONA.h"
#define FONA_RX 9
#define FONA_TX 8
#define ...
0
votes
1answer
7 views
Arduino IDE unable to see serial connection on OS X El Capitan
For some reason the Arduino IDE is unable to see my Arduino Uno even though it is connected. I have reinstalled the Arduino software, but no luck come of it. I connected the Arduino to my friends mac, ...
0
votes
1answer
11 views
Can this Motor shield support other arduino functions?
http://www.flipkart.com/grab-em-l293d-motor-driver-arduino-shield/p/itmehvzzpzj4wyby?pid=ETYEHVZZFFHRFMFG
I want to ask whether this shield will allow me to use the free pins of arduino for other ...
0
votes
0answers
13 views
Send and receive request from Serial communication
I have code as below. I need 2 alternation help in code
1)In existing code. I am serial request in loop function. I am expecting data when DeviceID, followed by particular length being ...
-1
votes
0answers
21 views
I want to know how to upload code wirelessly
How could I upload code wirelessly using Arduino and bluetooth hc-6.
And also send me a code for bluetooth and abstract avoiding car two wheels.
0
votes
1answer
11 views
Arduino uno, 2x parallax continous servos (BOE), wifi shield power draw
I am unable to properly connect those things together with batteries:
Arduino Uno
Parallax continuous servo
Arduino wifi shield
5xAA batteries are connected through power jack to arduino which I ...
-1
votes
1answer
32 views
Uploading codes
Can I upload code for line follower,sonar,bluetooth together on arduino uno r3? I want to fit all these parts together in one chessis.I will separate them using switch.
0
votes
1answer
18 views
Arduino + Wifi 101 Gerber Files
Is it possible to get the Gerber files for the Arduino Uno r3 and the WiFi 101? I've been teaching myself the SW side of this hobby (with much help from SE Arduino) and I'd like to better understand, ...
0
votes
1answer
27 views
Connecting Arduino to internet through HC-06 and then smartphone
Can I use HC-06 to connect the Arduino to a smartphone (which I am already doing) and thereafter take the data to the internet?
1
vote
1answer
30 views
Over voltage protection for Arduino
If an external voltage of 7 volts is applied to the external voltage input on the Arduino and the power from the USB port remains connected, is there a protective circuit that will protect the ...
0
votes
1answer
44 views
Possible Arduino Uno c++ compiler bug?
I recently gave the students in my Arduino-based programming class a project to write some simple unit tests and fix the bugs that they encountered as they did. The class in question mostly stores a ...
1
vote
1answer
44 views
EEPROM - Storing Static Data
I'm trying to store four items to EEPROM. I can do one item no problem, I just don't know how to make the jump to multiple items.
My code:
#include <EEPROM.h>
char sgrpID[31] = "acpilot's ...
0
votes
1answer
18 views
Mass Storage with Arduino Uno and LUFA
guys ! I want to implement the mass storage example from the LUFA Library to my Arduino Uno, but I do not know where to start. Has anybody done this successfully and could give me a few pieces of ...
0
votes
1answer
31 views
Delay function not working as intended
int j;
void setup()
{
for(j=2 ; j<=9 ; j++)
pinMode( j , OUTPUT );
digitalWrite( 2, HIGH );
}
void one()
{
digitalWrite( 3, HIGH );
digitalWrite( 4, HIGH );
}
void all_off()
{
...
0
votes
0answers
18 views
ESP8266-01 Standalone programming via Arduino uno clone?
For the past 2 days i have been trying to upload sketches to my esp module by using as a middleman this arduino uno clone .My goal is to program the esp to work alone as a microcontroller using the ...
0
votes
1answer
30 views
Purpose of extra holes for pins or Arduino clone
I bought this Arduino clone recently and it has lot of extra holes for pins, but some of them I don't know what they do. There was no instruction manual that came with it. Here's a picture of it, I ...
0
votes
0answers
9 views
How do I solve error 516 : Broken Pipe with HC-05 and arduino?
I am doing an LED project from howtomechatronics.com . It is to control and LED by pressing the on and off buttons on an arduino bluetooth terminal app. I am using the app made by the ...
0
votes
1answer
24 views
Can you send binary data to arduino AtMega328p?
I was wondering if its possible to send binary data to an Atmega328p. I don't want to send Arduino code or C code just binary. Is it possible to programme the ATmega328p using binary and how?
0
votes
1answer
33 views
Led blinking in the loop in condition
so I will explain what I want to get.
I am reading temperature from DS18B20 and showing it on the LCD.
I have one LED o pin 3 which is blinking when there is a temp reading and screen update. I have ...
-1
votes
0answers
12 views
is it possible to burn bootloader to atmega328( not atmega328P) using arduino UNO board? IF yes how?
is it possible to burn bootloader to atmega328( not atmega328P) using arduino UNO board as ISP? IF yes how? i have already tried changing names in board.txt and avrdude.conf..didn't work. I am using ...
0
votes
1answer
23 views
Detect if multiple variables are the same?
I'm setting a series of variables with: uint32_t currentLedColor[9]
What I'd like to check is if certain ones of those are the same.
Basically want to say if currentLedColor[0] and ...
0
votes
2answers
27 views
Digital Pin State - Some 1, Some 0
I'm running a sketch that looks for inputs to digital pins 3, 4, 5, 6, and 7. The gist of the sketch is that it's a digitalRead() from 3-7 with a Serial.println() to the monitor. The odd thing is ...
0
votes
2answers
25 views
How to store a function in a constant?
I'm trying to do something to this affect:
const string first_color = strip.Color(0, 60, 0, 0);
With the intended outcome being that I could use first_color wherever I'd have used strip.Color(0, 60, ...
0
votes
2answers
62 views
Simple memory chip for Arduino?
My basic question is: What is a good alternative to EEPROM chips for external memory on the Arduino Unor R3?
I know that there are EEPROM chips when one would like an external memory chip. It, in ...
0
votes
1answer
30 views
problem in integrating the slave code in attiny 84
I tried the whole process by using two arduino unos.It worked perfectly.
Though when i tried to replace the slave uno with attiny 84 uC it showed following errors in compiling.
Arduino: 1.6.7 ...
-3
votes
0answers
13 views
What are the different unique ideas you can give to make a unique arduino uno? [closed]
What all ideas you want to have in arduino uno board what all the needs you need in arduino uno board ?
0
votes
2answers
32 views
Using Blynk to control stepper motor is jerky
I am using Blynk to try and control a 28byj-48 stepper motor using the ULN2003 driver and an Arduino UNO from my iphone via USB withe the iOS Blynk App.
Without using Blynk, my stepper is smooth and ...
0
votes
1answer
24 views
Error on UNOr3--> avrdude: ser_open(): can't open device “/dev/ttyUSB0”: No such file or directory ioctl(“TIOCMGET”): Inappropriate ioctl for device
When I try to upload my program on the Arduino UNO chinese clone, It says -> avrdude: ser_open(): can't open device "/dev/ttyUSB0": No such file or directory
ioctl("TIOCMGET"): Inappropriate ioctl for ...
0
votes
1answer
25 views
Enabling keyboard feature on Arduino with CH340G
I've seen here that it is possible to enable keyboard feature on Arduino Uno so it can emulate a keyboard (send keystrokes to computer) like the Leonardo. They do it by updating ATmega16U2 firmware. ...
0
votes
1answer
23 views
Error saying an included library is not
The IDE tells me the included library isn't? I tried restarting the IDE and my computer but it doesn't work. The other libraries work fine it's only with Keyboard that it fails.
My code:
#include ...
0
votes
1answer
22 views
Getting RGB values from camera
I have a camera I'm planning on attaching to an arduino uno, that I want to take pictures and extract the average RGB value from each image.
This is the camera I have, but I've now realized that it ...
0
votes
1answer
28 views
How would I refactor this code, given how similar most of the lines are?
I have a set of buttons and a set of NeoPixel LEDs. There's lots of very similar constants (button1pin, button2pin, etc) so there's almost certainly a more efficient way of coding this.
Any ideas?
...
0
votes
1answer
15 views
How do I connect velostat to an arduino?
I have some velostat that I'd like to hook up to an Uno. At the risk of sounding dense...how do I do that?
Ultimately wanting to get readings of pressure from the velostat, just not sure how or what ...
0
votes
0answers
21 views
sending words in serial
I created a simple project to send commands from an android device to arduino via Bluetooth , using MIT App inventor ,
the issue is that when I send a word for example "BLUE"
in the serial it ...
-1
votes
0answers
40 views
Variable frequency RF Receiver and Transmitter
I'm looking to make gate controller duplicator, but the of the controls are different, one gate is 433mhz and another is 299mhz.
How i make a Variable frequency RF Receiver and Transmitter for ...
0
votes
1answer
14 views
Ethernet shield problem. The serial monitor for the webserver sketch shows that 'the server is at 0.0.0.0'. any suggestions how to debug it?
ethernet sheild problem. the serial monitor for the webserver sketch shows that 'the server is at 0.0.0.0'. any suggestions how to debug it?
-3
votes
0answers
15 views
Can't configure my Arduino Ethernet shield
I am stuck with the issue that I can't get to the server. The serial monitor shows:
server is at 0.0.0.0
I am using the Web Server example in Arduino but it is not responding. Can anyone help?
0
votes
0answers
59 views
How to calibrate a load cell?
I'm working with a load cell and HX711. There was no weight on the sensor but I kept getting strange values, I thought it was broken or something so I used my second load cell but the same thing ...
0
votes
1answer
12 views
Wifi101 ad-hoc network
I've reviewed the WiFi101 library but have found no way to make the 101 an ad-hoc network. Am I missing something? I'd like to be able to emulate the RedFly example:
...
0
votes
2answers
28 views
How to set float to variable with 7 digits after the decimal point in arduino?
Example:
float x = 3154681.124 / 100000; //x = 31.54;
I want x to be:
x = 31.5468112;
0
votes
1answer
60 views
My Arduino is unable to upload any program, nor is it resetting. Need help
Whenever my Arduino is connected to any Laptop, it keeps it's LED ON steadily. And, whenever I try to upload my program, the Arduino IDE says 'Problem uploading to board'.
I tried uploading programs ...
0
votes
0answers
19 views
How to use web data from GSM sim 900 to be used as input for Arduino?
I have GSM SIM 900 connected with Arduino UNO. I'm successfully able to use HTTP READ command to show any data from web on the serial monitor of Arduino. It is showing complete HTML from that URL on ...
0
votes
1answer
29 views
Multiplying Arrays
I have an issuing multiplying two one dimension arrays together. Each array is an unsigned long that is storing values of factorials. The last row is completely off. My code is below also with a ...
1
vote
1answer
33 views
TFT screen to change sketches
I have an Uno + WiFi 101 thermometer and I'd like to be able to take it places and easily change WiFi network SSIDs and passwords. Can I use a TFT screen to make these changes to a sktech or am I ...
