The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328 microcontroller.
0
votes
0answers
38 views
Can I operate a switch on/off automatically using Arduino?
I want to develop an Arduino controller which will send signals to transfer switch.
The inputs are from the utility source supply and generator source supply. If either of the source supply fails it ...
-1
votes
1answer
25 views
I need help purchasing materials for a arduino fpv quadcopter
I am an absolute noob in FPV quadcopters and quads in general. My aim is to create a simple quadcopter with a live video transmission. Based on my research I need:
4 rotors
4 Props
4 Electronic ...
1
vote
1answer
13 views
PN532 shield + RFM69 wiring issue
Given a standard Arduino Uno, I installed the PN532 shield and it worked fine reading tags as expected.
Then I soldered on a RFM69 onto the proto space of the shield and soldered up the wiring - the ...
1
vote
0answers
15 views
Send and Read packet xbee AT mode
I have a simple network created using Xbee series 2 devices.
My network is very simple, my end-device with Arduino UNO read a temperature and Lightning, display this value into LCD and send using Xbee ...
0
votes
4answers
48 views
How to control an Arduino connected device accross the Internet?
Actually i am trying to do IoT based work.
Until now the sensed data(temperature and humidity) has been made available to only for one user on the Internet using Apache tomcat. So far we have just ...
3
votes
3answers
45 views
Arduino not running the sketch with external power supply of 9v, but runs the program when connected to pc
Can anyone please help me figure out/ point the reason of this arduino problem? I uploaded a simple arduino sketch (blink an LED ) just to test if my real program was the reason of the "abnormality" ...
-6
votes
0answers
31 views
Need help to understand an error message
Arduino: 1.6.10 (Windows 10), Board: "Arduino/Genuino Uno"
Sketch uses 1,050 bytes (3%) of program storage space. Maximum is 32,256 bytes.
Global variables use 13 bytes (0%) of dynamic memory, ...
0
votes
1answer
21 views
Arduino ov5642 camera yuv422 output
Currently, I'm implementing arduino camera ov5642.
But especially, I can't understand the camera output at yuv422.
that spec wrote as yuv420 output sequence YYYY.../YUYV...
Actually, I don't ...
3
votes
2answers
46 views
Sound Recognition
I'm looking to recognize a particular sound using arduino uno.
I need to recognize a clap sequence to trigger a relay.
Having given it some thought i need it to be continuous listening mode with out ...
0
votes
1answer
22 views
L298N vs Motor Shield R3
I'm new to Arduino and need some clarification on motor drivers.
I was wondering if I can use a L298N instead of the Motor Shield R3, I hope not to be comapring apples to oranges, the doc of the ...
3
votes
3answers
55 views
Running quartz clock off an arduino
I am trying to run a clock off of an arduino following this site: http://www.cibomahto.com/2008/03/controlling-a-clock-with-an-arduino/comment-page-1/ and I tried to combine it with this to get it to ...
0
votes
0answers
21 views
Arduino IDE in conflict with pyserial for use of serial port in OSX Yosemite
I'm trying to communicate with an Arduino Uno via pyserial using a code that I wrote for Ubuntu. However, when I try to use the same code in OSX Yosemite after identifying the serial port for the case ...
1
vote
2answers
36 views
Making a current GPS code run once, and only once, after the code is 'activated'
I have a GPS code that I need to run only once, but every different try gives me errors, including placing the whole code in void setup(). Is there any way that this code can be run just once? As of ...
1
vote
1answer
22 views
not able to tick the checkbox of page generated by client object
I have green LED attached on Digital pin 2 which is by default set to LOW,
and I am trying to turn it on and off from a checkbox added on web page as shown in the code below, but I think something ...
0
votes
2answers
53 views
Powering 24 volt solenoid valve with Arduino uno
Today I received normally closed solenoid valve which I am going to use in automated pot watering system ,
I realised the valve takes 24 dc volt as input and Arduino has maximum of 5volt , using some ...
-2
votes
2answers
54 views
Lowering cost of using NRF24L01 radio module for communication between several Arduinos [on hold]
I have several Arduino Uno's if I am using several NRF24L01 modules to transmit a simple pulse (1 bit of information which can be high or low) between them-from one Arduino to the rest of them. Then I ...
0
votes
1answer
46 views
What can I do in this situation [duplicate]
I only currently have 2 arduinos and I find that any project I build I feel bad because I have to rip it apart to get the arduino because I want to build something else. Is there a way to get arduinos ...
0
votes
0answers
9 views
How to connect Omron D6T thermosensor with vibrating device?
I connected an Omron D6T Thermosensor to an arduino and used the code below:
How would I incorporate a vibrating device? I am new to using the arduino and also programming so I have no idea where to ...
0
votes
1answer
29 views
Arduino as analog to digital converter for temperature sensor
I have an ESP8266 module that must receive some data and send it to a server, my problem is that this data is given by a temperature sensore and a light sensor which must be connected to analog pins ...
0
votes
0answers
22 views
Trying to graphically display thermosensor output from Arduino to processor?
I have the code below:
But it has an issue with this line: 'font = loadFont("FZLTZHB--B51-0-48.vlw");'
It gives me the error: Could not load font. Make sure the font is in data folder.
But I am not ...
-3
votes
0answers
35 views
Asked about graduate research java web and arduino [on hold]
I am graduate doing a thesis about the problem data synchronization on IoT.
I want to build on environment Java Web(localhost) and Arduino.
Please show example, idea, topics research paper on such ...
-2
votes
2answers
30 views
IRRemote send and receive same Arduino
I am an Arduino (and C/C++) newbie so apologies if I am missing something obvious.
I am using IRremote (github link) as my IR library.
I can get the simple send and receive demos working ...
1
vote
1answer
22 views
Which sensor i can use to transmit some values from Arduino Uno to phone using bluetooth? [on hold]
I want to transmit some values from arduino uno to my phone using bluetooth.
Which sensor i can use?I want to see some options because i'm a little bit uncertain.Thanks to all which can give me an ...
-3
votes
0answers
25 views
Arduino micro + MPU6050 + Nrf24l01 >>>>>>>>>> Arduino uno + Nrf24l01
I have an MPU-6050 and an nRF24L01 attached to an Arduino micro.
The program for the MPU-6050 works and the Arduino micro works when I change the pins of SCL and SDA to pins 2 and 3. The nRF24L01 ...
1
vote
2answers
17 views
Debugging library - Error- expected unqualified id before '.' token
I'm writing a library for my project, which interfaces sensors used and structures them in different systems.
But I'm such a noob at C++. The compiler is throwing this error:
libraries/cec-core/cec-...
1
vote
0answers
20 views
Board.txt configuration change Atmega328p
Hi I am trying to configure an Atmega328p to run with an 8MHz oscillator in part to reduce power consumption and so I don't need to have level shifters all over my project.
I have changed the board....
1
vote
0answers
22 views
Problem with sending a POST request using the WiFiEsp library
I'm using an ESP8266 version 1 with the WiFiEsp library to connect to WiFi, and that works just fine.
I'm setting up the device using the same code as in the example WebClientRepeating.
I need to ...
0
votes
0answers
18 views
Arduino Uno Reading Fuses
I am trying to read the fuse values for the Arduino Uno, but keep getting the following results returned back to me:
enter code hereavrdude: Version 6.0.1, compiled on Dec 16 2013 at 17:26:24
...
1
vote
0answers
11 views
Having trouble connect nrf24l01 to arduino micro and arduino uno!
I'm trying to connect a nRF24L01 with my Arduino Micro and Arduino Uno. The Arduino Uno works fine, but it doesn't talk with the Arduino Micro. CE is on pin 7 and CSN on pin 8. I posted the code down ...
-1
votes
0answers
34 views
Error when uploading the sketch [on hold]
an error is displayed while i upload the sketch but the sketch passed the verify test successfully and also i have tried it uploading through all of my 3 usb ports while it always shows the message ...
-1
votes
1answer
22 views
2d 3*3 LED matrix code error
I have written a trivial code in Arduino IDE but while verifying its returning a error displaying "i was not declared in scope 12'
int pinMatrix[i][j]= {{2,3,4},{5,6,7},{7,8,9}};
void setup() {
...
-3
votes
0answers
9 views
Is it possible to make a boe bot person follower using a bluetooth module? [on hold]
I'm creating it for my project and I want the arduino powered boe bot to follow the person around while navigating objects.
-1
votes
0answers
29 views
Unable to send serial data to XBee connected to Arduino Uno without a shield
So here are some pictures of the setup I have with an LED, 330 Ohm resistor, Arduino UNO, 2 XBee S1s, and many wires,
http://imgur.com/a/FpKob
For specifics, here is the wiring,
XBee Pin 1 (VCC) ...
1
vote
2answers
31 views
How to switch on and off an HD44780 LCD Display?
I have an LCD Display HD44780 model and I was reading his datasheets
I saw the it has the functionality to be switched on/off as stated:
Display on/off control: D = 0; Display off // C = 0; Cursor ...
3
votes
1answer
71 views
How to create a smooth change in voltage?
We are given two voltages A and B between 0 and 5V.
So how do I generate a smooth/continous analog change in
voltage from A to B in a predefined time? The current with that varying voltage is 1 ma or ...
1
vote
1answer
44 views
How to use ESP8266-12E with PCF8574 as an I/O extender [on hold]
I am using ESP8266-12E with a PCF8574 as an I/O Pins Extender.
There are videos on youtube to use the PCF8574 with an ESP8266-01, but my problem is that I'm unable to analyze the pin connections with ...
-1
votes
1answer
30 views
Having problems compiling this code for NRF24l01 on arduino uno and arduino micro
I have the library RF24 and everything in my arduino library but for some reason it's not compiling. I don't know why. I posted the code and also the error message that the arduin IDE keeps showing. ...
-6
votes
0answers
25 views
how to capture an image with ov7670 with arduino uno and send it to the pc [closed]
plz help me in taking a picture from ov7670 connected to arduino uno .How to send that to my pc.
-1
votes
0answers
70 views
Arduino Binary to Decimal on 5x7 dot matrix display
I need some help regarding binary to decimal conversion on arduino i wants to make a dot matrix moving display using 3 of 5x7 matrixs first matrix shows the Arrow sign which moves upside like if i ...
-1
votes
1answer
38 views
Host name is unvalid
I am trying to call a web service from a server but didn't get the correct response on Serial Monitor arduino, i get the error "hostname is invalid". Below is the code along with the result:
Thanks @...
3
votes
3answers
88 views
Unexpected Delay Between For Loops
I made some arduino code for leds that blink down a row and then back again, but when the program is run, there is an approximately 2 second delay in between the first for loop and the second. This is ...
1
vote
2answers
94 views
I need 70 or more input pins for the Arduino -how to do this?
I have some SN74HC165N, CD4021B chips. How many (minimally) such ICs would I need to get 70 inputs to an Arduino Uno? What is the exact circuit diagram and the code? Im not sure how the wring cascades ...
3
votes
1answer
27 views
What's the problem with baudrate?
I was trying to evaluate the speed of communication between pc and Arduino, using this code in Arduino:
void setup() {
Serial.begin(9600);
}
void loop() {
Serial.println("Ciao Arduino");
}
and ...
0
votes
2answers
44 views
How to turn a LED if ultranonic HC-SR04 reading is on defined range for some interval
My objective is if ultrasonic readings ranging between 1 to 10 cm and no distance change for 10 seconds or more, a LED will turn on. Here is my current code.
#define trigPin 7
#define echoPin 8
#...
1
vote
0answers
25 views
Slow response from ENC28J60
I am making a circuit which turns a LED on and off through internet. I am connecting an Arduino to a LED and to an Ethernet controller(ENC28J60), but when I make a GET request to the device, it takes ...
1
vote
1answer
19 views
Arduino SSCANF stop on comma delimiter
I have the following problem, the arduino is receiving a command like
LCD,Display line text one, Display line text two
I use an strcmp to match the beginning of the string that works but now I would ...
3
votes
2answers
42 views
Is my Arduino possibly broken?
We work in groups on a project at school. We had to build an electric sheme with an arduino to make a small car moving.
We got the parts from our school, except the Arduino (we had to buy it ourselves)...
1
vote
1answer
21 views
How to connect GPS Neo-6M module to GSM Shield SIM900 V2?
I'm doing my final year project, My project is based on "Arduino Real Time Gprs/Gsm & GPS Tracker". So Now I have purchased the hardware components such as:
Arduino UNO R3
GSM Shield SIM900 V2.0
...
3
votes
3answers
68 views
Multiple If Conditions Arduino
I have a project which requires me to read if the input is "HIGH".
I have 15 inputs (switches), and each input has its own output (LED). I am using a Shift Register to control its inputs and outputs.
...
1
vote
1answer
17 views
Making two arduinos/mkr1000 communicate
I am trying to create a project in my free time just for a bit of fun -
which consists of two mkr1000 (one acting as a webserver connected to one laptop, and the other acting as a web client ...
