The Arduino Uno is the most common and one of the newest Arduino boards. It is based on the ATmega328 microcontroller.
4
votes
1answer
47 views
RTClib library dependency on Wire library
I downloaded the RTClib library from https://github.com/adafruit/RTClib. In every provided example, #include <Wire.h> is written immediately above #include "RTClib.h" at the top of the sketch. ...
0
votes
0answers
10 views
Unable to read the IC Card UID
I have a RFID module using NXP RC522 chipset.
I have no idea that is it correct the module using 27.120 mHz
And I have 4 IC card,
A) 0005302176, (Blue color tag, come with the RFID module)
B) ...
0
votes
2answers
39 views
Tile NeoPixel NeoMatrix 8x8
As a programmer I am new and lack some knowledge in electronic and I will appreciate the help.
I wish to connect 3 Adafruit NeoPixel NeoMatrix 8x8 - 64 RGB LED Pixel Matrix ...
0
votes
1answer
16 views
Adafruit CC3000 jumper pads
if I solder the jumper pads on the adafruit cc3000 for use with the Arduino Mega will it still work fine with the Uno?
0
votes
3answers
46 views
Can't program Arduino via Bluetooth (HC-06) with a Mac
I bought a HC-06 Module for my Arduino Uno the other day, yesterday it arrived and I'm having trouble using it with the Arduino IDE.
I set it up, connecting 5V, GND and RX/TX crossed. After a bit of ...
2
votes
2answers
62 views
Can I program AVR Microcontrollers using Arduino Development board with AVR Studio?
I know and I can program any AVR microcontroller with Arduino IDE and Arduino Uno board. Can I use Arduino board with AVR Studio? Or I have to buy an AVR Development board?
-1
votes
0answers
9 views
Modbus communication
I am using Arduino modbus library for measuring string current using hall sensor.Here library downloaded .I have sensor data in floating value & the library store the value in integer format.
...
2
votes
2answers
88 views
Is it wise to use analog input pins to read digital buttons?
I am thinking about building a circuit that is literally going to take 11 of the 14 digital pins of an UNO to communicate with an SD card and an external EEPROM chip (EEPROM programmer).
Using 4 ...
0
votes
1answer
28 views
uBlox Neo 6M GPS module Not responding
I started recently working with a uBlox Neo 6M GPS module, (data sheet http://www.u-blox.com/images/downloads/Product_Docs/NEO-6_DataSheet_%28GPS.G6-HW-09005%29.pdf). I connected it to an Arduino Uno ...
0
votes
0answers
16 views
Sparkfun Red board and CC3000 shield not allowing multiple HTTP_GET requests.
I have a SparkFun Red board (Arduino Uno R3) with a SparkFun CC3000 shield attached. I am trying to post data to the "data.sparkfun.com" service in order to test a basic Wifi data logger. I am using ...
0
votes
1answer
59 views
W5100 module hookup help - Not a shield
I recently purchased a W5100 based ethernet shield for my arduino Uno, and looks like this. I had been following the guide here, and connected the pins accordingly - 5V to 5V, GND to GND, MOSI to 11, ...
0
votes
3answers
75 views
Arduino Uno + Wifi Shield + PS2 Keyboard + LCD Display
I'm new in the Arduino Community and I'm facing a problem when I try to use a PS2 Keyboard and an LCD Display (16x2) on an Arduino Uno with a Wifi shield.
I would like to write something with the ...
0
votes
1answer
32 views
Works on Uno but not on Yun
I found some code that works to transmit the required signal to an RX-2B RC receiver, the code works great from my Uno but when I tried to run it from my Yún nothing happens.
The code has definitely ...
0
votes
1answer
36 views
Proxy and Authentication in Arduino Uno
I am using the Ethernet Shield on top of the Arduino Uno. I want to use this setup to access webpages. But I am unable to access because the ethernet connection is present in a University which ...
0
votes
0answers
16 views
Serial outputting an error string of x and o characters (Adafruit Wave Shield, Arduino Uno, Charlie's RFID bear from Makezine)
I'm currently trying to implement an edited version of the CharlieBearV2.pde sketch from the Charlie's RFID Bear project on Makezine. Beforehand, I tested the RFID reader (I'm using an ID12 from ...
0
votes
3answers
45 views
Arduino Uno + Ethernet shield stability question
i have a climate control software which reports data back through the web browser. Everything seems to be working however I am running into an issue where
1 - after a bit it seems the page doesnt ...
0
votes
0answers
15 views
How to read keyboard's input from Arduino Uno to see this input in the Serial Monitor with Keyes USB Host Shield?
I have Arduino UNO, Keyes USB host shield, Logitech K220 wireless Mouse and Keyboard all with me. I want to see the Logitech keyboard's key inputs on my Arduino IDE's Serial Monitor. I have already ...
0
votes
0answers
44 views
RN-52 - Bluetooth Audio Module two way communication with Android
Im planning a project that involves sending data from a door phone to an android phone and vice versa using the RN-52 chip from sparkfun. Because of the nature of the project it is necessary to be ...
0
votes
1answer
39 views
How do I replace a burnt atmega328 with a new atmega328(bootloaded) in arduino? [duplicate]
I have an arduino UNO with atmega 328 whose microcontroller got burnt. I bought a new atmega328. I have another working arduino with atmega8. I followed the instructions in ...
0
votes
2answers
68 views
How do I replace a burnt atmega328 with a new atmega328(bootloaded) in arduino?
I have an arduino UNO with atmega 328 whose microcontroller got burnt. I bought a new atmega328. I have another working arduino with atmega8. I followed the instructions in ...
0
votes
1answer
91 views
How can I speed up reading of an SD card?
I am working on a project using an Arduino as a web server.
Code:
webFile = SD.open("index.htm");
if (webFile) {
while(webFile.available()) {
client.write(webFile.read());
}
webFile.close();
...
2
votes
1answer
57 views
Random(min,max) Function only giving ~50 range no matter what the values?
I can't get the min,max range to function properly. Monitoring the serial, only gives out ~50 difference from the min. I then added truerandom.ino to try to fix, but no help.
const int ledPin = 13; ...
0
votes
1answer
24 views
Interfacing Hex keypad with arduino
I was trying to interface my hex keypad with Arduino. I declared rows as input and columns as output. When I initialize three of the four columns as HIGH and one as LOW, and detect the button pressed ...
0
votes
3answers
65 views
Sending a command to Arduino in a Home network
How can communication to Arduino (Arduino Uno) be made through a PC connected in the same network?
Do I need a server running?
My hardware:
Arduino Uno
Adafruit cc3000 breakout board
Can ...
2
votes
1answer
63 views
Increasing payload size above 32 bytes using nRF24L01+
I tried to modify the example in the following page, by replacing the given string with a 56 bytes one after making all the suitable changes to read(), write() and max_payload_size(increased to 64 ...
0
votes
3answers
76 views
Arduino Uno R3 not recognized by computer, TX and RX not blinking, neither are lit. Is it dead?
I was trying to make my arduino uno r3 to work on my Linux machine (including the IDE), but it wouldn't. At first I thought it was a software problem. Added myself to different groups and did ...
0
votes
0answers
33 views
Send one bit out per clock pulse received using direct port manipulation?
I want to send one bit of a byte out per 'rising edge' received to an Arduino digital input. I am addressing the outputs using direct port manipulation (to achieve maximum speed), and I would like to ...
0
votes
0answers
44 views
connection issues with 3 arduinos any suggestions?
I have 3 arduinos that I want to program on, all of them with their own cable and I have tried to connect them to my laptop on several different usb ports, my usb ports work with mouses so that's ...
0
votes
1answer
33 views
Arduino PWM Frequency - Pros and Cons of Modifying
I am interested in using an Arduino Uno to produce an analog signal by running PWM through an RC low-pass filter.
I'll be controlling a highly dynamic object and need a clean voltage signal to ...
0
votes
0answers
23 views
Arduino ECG sputtering out totally random values
Hello StackExchange community,
I have encountered a problem in my ECG/EKG design. I am trying to create the ECG using Arduino as a microcontroller to send/retrieve heart rate measurements via ...
0
votes
0answers
39 views
Throughput and BER test with nRF24L01+ radio and Teensy microcontroller
I am trying to modify the example given in the this page to a basic throughput and BER test with two nRF24L01+ and Teensy 3.0 modules.
I want to modify the nrf24l01_send_string example in a way that ...
0
votes
1answer
41 views
Can't store temperature in variable ( for further processing)
I am trying to store temperature data in a variable, so that I can use it for making a JSON object, but the problem is, that when I try to store the temperature in a variable, it prints out the wrong ...
0
votes
0answers
28 views
himidity sensor with more probes
could you advice how to amend such schema in order to measure humidity on more probes?
http://emesystems.com/images/smx/SMX555sc.gif
My idea is to have one NE555 and some sort of switch with every x ...
1
vote
1answer
44 views
how to know which pin is being used, change pin?
i am having an issue where i am unsure how my device knows what pins its using. Version #1 is a timeclock which is simply declared with no pin numbers. Version #2 is a simple loop with a device on pin ...
-1
votes
3answers
58 views
Connect Arduino to Galaxy S2 using USB OTG
I want to connect an Android Galaxy S2 phone to my UNO Arduino using USB OTG functionality.
I can upgrade/root the android to any version I want. My goal is to be able to communicate between the ...
1
vote
1answer
83 views
Arduino Uno synthesizer - Line Level (audio) output to mixer/amplifier
Is using PWM tones from Arduino amplified by a HiFi amplifier safe? Can I damage the amplifier or speakers because the PWM signal is not a "real" audio signal? Taken in consideration that I do not ...
0
votes
0answers
41 views
Problem with LCD keypad shield and Arduino Uno R3
I have a problem with powering my LCD Keypad Shield from a DC cable (4 AA batteries or 9V battery). Everything looks good, but the LCD screen doesn't display anything. When I used a USB cable, the ...
2
votes
1answer
188 views
What do these pins on the Uno do?
I've been wondering for a long time what these pins, labeled ICSP and blank, do.
I can't seem to find a diagram that explains them, so I've been wondering:
What are they for?
Are they GPIO, or do ...
0
votes
0answers
7 views
node.js script fails - TypeError: Object 0 has no method 'on' - Mac to Arduino UNO [migrated]
when I attempt to run this uvsensor.js script from this plot.ly tutorial I encounter this error message. What is the best way to resolve it?
uv-sensor-tutorial $ node uvsensor.js
1421612122362 ...
0
votes
1answer
29 views
data type error on sensor data to ethernet client
I'm having a hard time debugging this piece of code, and i'm hoping someone can point out where i am making the mistake.
My serial output is:
connected
GetData()
got data...
next stage...
I've ...
0
votes
0answers
36 views
SD card change txt file into array [duplicate]
I have been trying to convert numbers in lines of a txt file into usable integers. I have a file filled with numbers, and I have narrowed the problem down to the fact that the file isn't successfully ...
0
votes
0answers
18 views
Arduino Uno not responding when uploading RFID reader program; avrdude not in sync
I've been working on a project with the Adafruit Waveshield, ID-12 RFID reader, and a speaker connected to my Arduino Uno. Unfortunately, as I try to upload an RFID reader program, I'm consistently ...
0
votes
0answers
32 views
TCS 230 colour sensor using arduino
i m working on a robot that can sense different colours and then follow a particular path accordingly.previously i was using "pulseIn" function to read the out frequency but the results are not very ...
0
votes
1answer
73 views
Possible arduino burned (5V shorted to Vin), explanations and suggestions
Please apologize my english.
I am working in a project using an original arduino uno, one generic servo (no factory marks) and one HC-SR04 sensor.
I make a circuit like the one here: ...
-1
votes
2answers
93 views
Emergency! INO file disappeared on computer. Still on Arduino!
For some reason, my Arduino program has disappeared from my computer, and it was a really long, complex program. It is currently still on my arduino, and I HAVE to get it back. Please, someone help ...
0
votes
1answer
30 views
Freeze with VCNL 4000 Proximity Sensor
I've the VCNL 4000 Proximity Sensor I use some sample code and at the very beginning
the following code hangs (never finishes)
readVCNLByte(0x81); is called
Can this problem be caused because ...
-1
votes
0answers
153 views
Why does this make the LED flash green?
I connected an arduino to an RGB LED, but it isn't working.
This is the circuit:
I have double-checked everything to make sure that the ports were correct, but it still flashes green when I make ...
0
votes
1answer
48 views
Cannot control servo with button.
I am unable to get a button on my arduino board to control a servo. I'd like the servo to rotate 90 degrees on button push, but it is unresponsive.
Is there a flaw in my code or is it wiring?
...
0
votes
1answer
18 views
Arduino Uno with SD, Cardinfo sketch how to list only visible files
There are two files (that can be seen on my computer) on my sd card, 6.bmp and example.txt (the latter written from my arduino). I have them connected to my arduino via LCSTUDIO breakout board (which ...
0
votes
0answers
48 views
Self balancing robot advanced
I am in the last 2 weeks trying to build a self balancing robot using arduino + lego parts. I am using PID with MPU6050 to create data fusion and my robot can balance itself well with small pushes. ...
