The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328 microcontroller.
0
votes
0answers
8 views
Getting NaN error in Processing when Xbee is used and trying to create a popup window.
I am trying to get data from D6T Omron thermal sensor. It works fine with both Arduino and Processing when I connect it to pc directly. However, it seems to always cannot read my last data in my data ...
0
votes
1answer
8 views
Funduino Uno with 5V 1A power supply?
Can I use a "Funduino Uno" arduino with power from a power bank with DC 5V 1A output?
0
votes
0answers
8 views
SM 130 RFID reader, with Arduino Uno. Trying to read RFID passive tags on Arduino version 1.6.7
I am trying to read passive tags using these two devices and an arduino uno, for a class project of trying to make my own doggy door. However, all the code I have been able to find is out of date, ...
0
votes
0answers
15 views
Sampling Rate of Arduino Uno
It might be a stupid question but, I am currently using Arduino Uno with the 16MHz processor, what is maximum sampling rate of data available to me if I want to read data of a sensors such as ...
0
votes
0answers
18 views
arduino quadcopter freezing while reading MPU6050/RC Receiver
I am trying to build an Arduino Flight controller. I have an MPU6050 (Gyroscope/Accelerometer) on board that is helping me configure my stabilization software. I also have my ESC's, and receiver ...
2
votes
2answers
81 views
SDA/SCL pins Arduino Uno
I am trying to figure if SDA and SCL pins from Arduino Uno is a TTL or a CMOS technology. I am not able to find this info anywhere but regarding it is a I2C protocol it does make sense to be a TTL ...
0
votes
1answer
21 views
What are some “must-have” sensors or shields for an Arduino robot or motor?
I am starting to learn Arduino and wanna make some projects.which components will I have to buy?please help me.
1
vote
1answer
16 views
What is the necessity of “Prototyping Shield” for an arduino UNO R3?
I just want to learn arduino and make some small projects.But in beginner starter kit there's a part named Prototyping Shield .Is it necessary or will it help me?
0
votes
1answer
11 views
NEO 6M GPS SPEED
I am doing a project using NEO 6M GPS with my arduino lilypad.
I programmed it already, and it's working well except of the speed. I get stuck on fixing this, I wonder why the value is never getting ...
0
votes
2answers
39 views
Project 2: Arduino controlled spaceship interface
The circuit diagram attached shows that the switch is open. Yet, the LED connected to pin 3 of the arduino board lights up.
I don't understand this - the circuit is open, so why should pin 3 light ...
-1
votes
1answer
16 views
Beat 1 LED light is always on - should turn off
/**************************************/
const int lowestPin = 1;//the lowest one attach to
const int speaker = 13;
int ts = 4;//how many beats you want
int count = 1;
const int keyPin = 11;
const int ...
0
votes
0answers
6 views
NEO GPS 6M connecting to Lilypad Arduino
I'm working on a project that has something to do with receiving gps data from the satellites. With this, I've used GPS NEO 6M with an arduino Lilypad for wearable purposes.
I've already tried using ...
1
vote
2answers
19 views
Using Arduino and Xbee at the same time
I have 2 Arduino Uno's, 2 Xbees and 2 Wireless Proto Shields. The first setup has a humidity/temperature sensor (SHT21P) and it writes data to serial and it works (i've tested it). Now I have the ...
0
votes
1answer
48 views
Why does this code show me a lot of space?
I want to make a 4hz reading of GSR and temperature, in the following format for every second:
697,20.8744
696,20.86521
695,20.8653
699,20.8777
The print, in python, would be print(GSR+","+Temp)
...
0
votes
0answers
6 views
Which tft works on both Arduino Uno and Raspberry pi
Ideally I'd like a 2.8 inch and it to be touch screen.
But most of all I'd rather it work on both boards without much hassle.
0
votes
1answer
14 views
radio wave generation using arduino
const byte ANTENNA = 9;
void setup()
{
// set up Timer 1
TCCR1A = bit (COM1A0); // toggle OC1A on Compare Match
TCCR1B = bit (WGM12) | bit (CS10); // CTC, no prescaler
OCR1A = 9; ...
1
vote
1answer
19 views
No sketches will upload to Arduino Uno board; says “access denied”
I'm using an Arduino Uno board with an HP computer running Windows 10 and IDE version 1.6.8. Arduino was working fine for me until a few days ago, when (and I suspect this is the root of the problem) ...
0
votes
1answer
10 views
Join Serial Data Seperated by Newlines?
I have two Arduinos connected through Bluetooth. One sends a string of data similar to 506:507:1\r\n. The data can vary similar to 0:1000:0\r\n. I already have functions to break that string down into ...
1
vote
3answers
49 views
Arduino UNO doesn't produce expected square waveform
I want to produce quick square waveform for testing purposes. If I will use this code:
void setup()
{
pinMode(2, OUTPUT);
}
void loop()
{
bitSet(PORTD, 2);
bitClear(PORTD, 2);
}
I will get ...
2
votes
3answers
48 views
Can I measure velocity from an accelerometer? How accurately?
I've bought this module
Kootek GY-521 MPU-6050 MPU6050 Module 3 Axis analog gyro sensors+ 3 Axis Accelerometer Module
My project will involve affixing this to a moving object, moving at velocities ...
0
votes
0answers
9 views
Want to setup a wireless communication using nrf24l01
I want to transmit a alphabet from one arduino to another using nrf24l01 trans-receiver and receive the same alphabet on the receiver nrf. I want to get a transmitter and receiver code with ...
1
vote
2answers
22 views
SMS Receiving problem - Arduino Uno and SIM900A GSM Module
My intention is to control an LED according to the content of the SMS received. For example, if the SMS is "ON", turn on the LED and if it is "OFF", turn it off. I referred many sites and got the ...
1
vote
2answers
45 views
Forensic security of Arduino (SRAM)
Pardon the double post, but I'm not getting much traction with this question over at arduino.cc so I'm looking for answers here now.
Original post: http://forum.arduino.cc/index.php?topic=391698.0
...
1
vote
3answers
44 views
Why does the arduino respond so slow to serial input
I have this really simple sketch where I blink a led light.
If I send another value threw the serial monitor then first there is always a brief second where the light doesn't blink anymore. Why is ...
0
votes
1answer
14 views
Is it safe to power an MQ-7 gas sensor with a 9V D.C supply?
I'm looking for a portable power source for an MQ-7 gas sensor. According to my research - it needs 5V D.C power with at least 0.3A of current. I'm not really good with electronics so I need to know ...
3
votes
1answer
29 views
Arduino UNO + Jaguar Speed Controller + CIM Motor (12V DC)
I have connected a CIM motor to a Jaguar speed controller, powered by 12V battery. The jaguar is connected to an Arduino UNO via the signal and ground. Also, I have two switches connected to the ...
0
votes
2answers
36 views
Cheapest Arduino wireless solution for home automation [duplicate]
I am from programming background and newbie to this field.
Couple of days ago I brought Arduino Uno (5V). I want to control light bulb and fan from my Android. So I thought, I will buy relays and ...
0
votes
0answers
45 views
VS1003 MP3 module performance(?) problem
I'm trying to play sound on Arduino Uno with a VS1003 module, using schematics and most of the code from this project and I have almost succeeded, but I've got (I think) a performance problem and I ...
1
vote
2answers
61 views
Wire Library send/receive
I'm doing a project which includes Arduino Uno and a Custom Hardware made by me. Everything is working perfect independently and I'm trying to implement a way for them to work together (the arduino ...
0
votes
1answer
17 views
Connecting ethernet shield to computer
What configuration settings do I need to change on my computer to use the ethernet shield mounted on my Arduino UNO as I don't want to connect the ethernet shield to the router?
0
votes
4answers
66 views
Not enough pins on Uno?
I'm making touch-sensitive, light up tic-tac-toe board.
That means 9 LEDs + 9 capacitive sensors.
Each LED needs 1 pin and each sensor needs 2...meaning I'd need 27 pins to properly control each ...
0
votes
2answers
24 views
Signal pin of buzzer is connected with which Arduino uno pin
I bought a 3 pin buzzer. It has positive, negative and signal pin.
I don't understand how this signal pin should be connected with the Arduino.
Here is reported the description page of the buzzer.
...
0
votes
0answers
11 views
OV7670 non FIFO with AL440?
I am trying to build a low-cost Arduino-based camera image to SD card prototype and would like to know if it is feasible to connect a non-FIFO OV7670 camera to an AL440B video buffer to avoid the ...
-2
votes
1answer
29 views
Integrating arduino program with java
I am new to Arduino. I have a task to pass some data from a webpage to Arduino based code. I need to fetch the data from user from a web page and pass the input to the arduino program via java code.
...
0
votes
1answer
21 views
Arduino countdown timer preventing rest of program running
have a program that checks to see if an RFID tag has been read, if it has, it runs some code.
I also have a count down timer function (timer) that I'd like to run in the background. It displays the ...
0
votes
3answers
53 views
Is cheap away arduino trustworthy
I have recently decided to buy an arduino over a raspberri pi and have been shopping for a good deal and learning about which model I need and where to buy.
I have come across a few very cheap ...
0
votes
1answer
15 views
how to make arduino powered talking circuit?
I am trying to make arduino controlled circuit which can speak. And it should be easy and affordable. how can I make it?
-2
votes
3answers
33 views
how can we replace a 10k potentiometer with resistors?
I am using a lcd (16 2)with arduino uno r3, in for that I need a 10k POT but I don't have it now. How can I replace that?
I have resistors of many kinds and a 1k potentiometer.
0
votes
0answers
18 views
Arduino to Thingspeak using WiFly-RN171 (Firmware 4.0)
I am attempting to use an Arduino Uno+WiFly setup to send data to Thingspeak.
I have tried a few libraries by now. But nearly all of them don't have a working WebClient example (WebServer works ...
0
votes
1answer
13 views
User input for utility program
I am writing a utility program to test relay boards. I'd like to be able to accept a user input of the number of relays on the board. Is this doable via the serial monitor since when I'm testing ...
1
vote
1answer
60 views
(SOLVED) DB:NO RESP Using inet.httpPOST on loop()
I'm using SIM900 module + arduino uno + gsmlib.org library.
I'd like to send a string to endpoint on my API , and it worked correctly for the first time when I using inet.httpPOST function in ...
0
votes
2answers
20 views
Iterating an array of relays
Bear with me as I'm fairly adept at C# but I am having a problem understanding how to get an array iterated.
I am writing a program to test relay boards, it will eventually have an input mechanism to ...
0
votes
1answer
19 views
Multiple node communication using NRF24L01 [on hold]
Code for detecting data available at which pipe when using multiple pipe for communication??
0
votes
1answer
43 views
Powering servos with Arduino
I have an Arduino uno board, I want to build a pick & place bot and thus I need powering two servos, when I power them by computer they work as excepted but then I powered it with a battery, ...
0
votes
1answer
16 views
GSM SIM900A not sending phone call
We have used this code:
char phone_no[]=”+919062261355″;
void setup()
{
Serial.begin(9600);
delay(2000);
Serial.println(“AT”);
Serial.print(“ATD”);
Serial.print(phone_no);
Serial.println(“;”);
...
0
votes
1answer
25 views
Ultrasonic's Readings Affected by Strong Wind?
I am currently working on a project that turns a MUAV (AR Drone Parrot) to an obstacle avoiding drone. Obviously, I need to use a sensor and I chose HC-SR04, and I have placed the sensor in the front ...
0
votes
0answers
11 views
WebClientRepeating not printing response to Serial
I'm following the tutorial in WebClientRepeating and it says that "The content of the page is viewable through your Arduino's serial window." However the output in my Serial window is just saying ...
0
votes
0answers
15 views
How can I read also the temperature with this GSR sensor?
Considering the GSR is the inverse of the Resistance, if I know the resistance and how much it increases for every celsius degree, the game would be done.
Here's how my code looks like at the moment:
...
3
votes
0answers
32 views
Shield:FAIL problem in ESP8266-01 with Arduino UNO
I have been working on a Security System project wherein I should get an email if the PIR sensor detects any human presence.
I have used an Arduino UNO, ESP8266-01 WiFi module and a PIR sensor.
Power ...
0
votes
0answers
31 views
Problem related to Arduino ip address
Can anyone explain to me why my output ip is: 15.16.17.18?
I configured my addresses as follows:
Arduino :
gateway 192.168.1.1
ipaddress 192.168.1.8
subnet 255.255.255.0
My local network:
gateway ...
