The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328 microcontroller.
0
votes
2answers
14 views
Cheapest Arduino wireless solution for home automation
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
22 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
1answer
31 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
15 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
2answers
26 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
12 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
7 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
26 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
18 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
47 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
13 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
27 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
14 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
47 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
16 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
40 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
15 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
23 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
10 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:
...
2
votes
0answers
22 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
29 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 ...
0
votes
3answers
14 views
Only return button state once in X amount of time?
I want to detect if a button has been pressed, but what I don't want is for it to keep returning the "pressed" state more than once within a second or two.
For example, with this code:
void loop() {
...
0
votes
1answer
55 views
GPS Transmits False Data with SD card in; True data with SD card out
I've programmed my Arduino Ethernet to receive data from a Skytraq Venus GPS receiver and separate it using TinyGPS, then store it on an SD card. With the SD card inserted, everything else except the ...
0
votes
1answer
23 views
How do I connect an 8x8 LED RGB matrix to an Uno?
I have this 8x8 LED RGB matrix. How do I get it connected to an Arduino Uno?
It came with no other wires/modules/connectors and has a veritable crap-ton of pins to connect.
-4
votes
2answers
27 views
How can I control continues servo using potentiometer?
All I want in my project is that according to potentiometer output voltage I have to convert it into degree rotation in continuous servo.
0
votes
0answers
7 views
Which backpack to use with NHD-0440WH lcd?
I would like to use the NHD-0440 (Newhaven 4x40 display) with Arduino over I2C/TWI. But I cannot find any suitable/available backpack. The above display is in reality made from two 40x2 displays, and ...
0
votes
1answer
7 views
RF 433 Module with VirtualWire: transmit and receive using the same Arduino board
I was wondering if it was possible to work, in the same Arduino board, both Transmitter and Receiver RF 433 MHz modules. Is it feasible?
Here is the schematics I tried:
1) a pushbutton toggles a ...
0
votes
0answers
35 views
Sending data from Arduino UNO as a SOAP request
I have a servo motor on one end which can be turned ON and OFF with Web Service sending SOAP request. In the other end I have my Aurdino UNO with ESP8266.Currently, I can able to send HIGH or LOW ...
1
vote
1answer
23 views
2WD robot - logic error
I am making a basic 2WD robot using Arduino Uno with motor shield.
I am getting no compile errors - but something in my logic flow is not working as expected.
Expected Operation:
Ping sensor does ...
0
votes
3answers
21 views
Diagnosing crashed Arduino Uno
I have an Arduino Uno connected to a motor controller over I2C. The Arduino accepts commands from a Raspberry Pi via the USB serial line.
I'm trying to diagnose a problem where the Arduino will ...
0
votes
0answers
16 views
Arduino with Bluetooth
HI I am a newbie and need some suggestions
Is there a possibility to do this?? I am trying to send MIDI data through a button using Arduino and bluetooth module HM10. Can someone help me write the ...
1
vote
1answer
17 views
Arduino GPRS (GSM) shield (SIM900) no long pins
I have bought a SIM900 shield for an ordinary Arduino Uno board. The problem is that it doesn't have long pins on the bottom side, making it impossible to click on mu Arduino Uno.
The shield I have is ...
0
votes
2answers
23 views
Control 24V device with complex duty cycle (was Arduino programming)
Good day all, I am involved in a project which requires me to power on a device for a specified period of time then powering it off for another set period. This is then done 3 more times but using ...
0
votes
2answers
20 views
HC-05 to low cost AB shutter 3
I'm trying to connect a HC-05 to AB Shutter3 module. However, when I try to search AB Shutter3 address via AT commands (AT+INQ) I could not find AB Shutter3.
I want to integrate both, so that I can ...
0
votes
3answers
37 views
How can I exactly put my sensor at 4 Hz readings?
I'm using the grove GSR sensor: http://www.seeedstudio.com/wiki/Grove_-_GSR_Sensor with this code:
const int GSR=A0;
int threshold=0;
int sensorValue;
const long interval = 1000;
void setup(){
...
0
votes
1answer
14 views
Thermistor value correct on Uno backwards on Nano
EDIT: upon further investigation: I found out that if I wired it Thermistor > resistor > GND values go one direction. If I wired it Thermistor > Resistor > 5v, it goes the other direction. So my new ...
0
votes
1answer
58 views
How to make servo rotate for angle bigger than 180°
Connected servo motor (180°) to Arduino Uno R3.
Currently I am using a servo motor which have rotation angle specified as 180°, but I have a requirement to rotate to certain angles greater that 180°.
...
1
vote
1answer
55 views
Designing a robotic arm using Arduino Uno
We are making a robotic arm using Arduino Uno board in which we are not able to decide which kind of motor to use.
Which motor will be better if we want to lift weight up to 1kg using gripper at the ...
0
votes
0answers
20 views
How to get the name of the device connected to the bluetooth?
Recently, in the supermarket, I've seen a speaker that tells you the name of the device connected to ut via bluetooth.
Now, I want to a portable speaker powered by bluetooth with arduino, and I want ...
1
vote
1answer
18 views
Connect a USB slave into Arduino using FTDI
Probably I'm asking a nonsense question but I'm new at interfaces.
I want to connect an USB barcode scanner to an Arduino (Uno or Mega). I've read that I need a USB host shield to achieve this. But I ...
0
votes
1answer
41 views
Error 516: Broken Pipe Error using module HC-05
I am Controlling 3 Servo motors using bluetooth module hc-05 with a bluetooth app, but when I try to send the speed data to the motors it gives broken pipe error.
My COM port is set up right and so ...
0
votes
2answers
38 views
Power problems stacked Arduino shields
I have a weird problem. I am currently building a BB-8. Therefore, I am using an Arduino Uno. On top, I have stacked an Adafruit Motor Shield v2.3 and, again, on top of this, I have stacked the ...
2
votes
2answers
54 views
Can I use two sensors with different baud rate without problems on arduino?
One sensor has a baud rate of 115200, the other 9600. I think this will create problems in the serial because I can only choose one baud rate.
What do you think?
The first sensor is the pulse sensor, ...
4
votes
0answers
44 views
Why does pulse sensor shows gaps when I move it?
I modified the serial code in this way and I don't think the gap is produced by my edit even because it made it even before:
//////////
///////// All Serial Handling Code,
///////// It's ...
1
vote
0answers
42 views
How do I set my sampling rate?
I want to monitor the vibration from a motor running at 9.5Hz at 565rpm. I am using Arduino Uno and the ADXL345 as my condition monitoring equipment. How do I set the sampling frequency? I want to ...
3
votes
1answer
48 views
SD-Card-Module doesnt work with external power supply
Problem description
I am trying to build a datalogger with an Arduino UNO. I have connected a SD card module to the Arduino. I have planned to catch the measurement data from the analog input pins. ...
4
votes
1answer
55 views
QuadCopter PID using MPU6050
I am using Arduino Uno, with PID library and Jeff Rowberg library for MPU6050 i.e I2Cdev.h, MPU6050_6Axis_MotionApps20.h.
There is one PID for each axis i.e Pitch and Roll, I am getting output that ...
