The Arduino Uno is the most common and one of the newest Arduino boards. It is based on the ATmega328 microcontroller.
0
votes
1answer
9 views
RF Remote Clone using NRF905
I have come across the various blogs which talks about cloning RF remote using cheap 434 MHz Tx/Rx and RCSwitch library.
I tried using RF 434 MHz ASK (https://www.sparkfun.com/products/10532) module ...
0
votes
1answer
20 views
Push Button Wireless Arduino Project [on hold]
The idea is to have a push button wirelessly transmit to the board, causing the board to switch on/off a servo. It would similarly work like a remote car starter. Th reason for this project is to try ...
0
votes
1answer
21 views
GSM arduino to webservice not working
I have setup a arduino with a SIM300 based GSM board. I have
Tx of Arduino connected to the Rx of GSM board
Rx of Arduino connected to the Tx of GSM board
Gn of Arduino connected to the ...
0
votes
0answers
12 views
Can I use the sensors on my smart phone to control my arduino bot? [on hold]
It seems easy to carry out in theory, but i want to do so without using any third party applications. I can easily attach a bluetooth module to my arduino and create an app that transmits data ...
2
votes
1answer
15 views
How to implement setSyncProvider and verify it is working with PC
I'm trying to retrieve / synchronize time from PC using this Time lib function:
setSyncProvider( requestSync); //set function to call when sync required
It sends ASCII BEL (07) character to PC, ...
1
vote
1answer
37 views
cannot drive dc motor with arduino pwm
I've programmed the arduino uno to generate pwm corresponding to the serial input values. And it works fine with led. I took the connection from pwm pin 3 (where I set the output) to the base of a ...
1
vote
1answer
17 views
Class TKPotentiometer has no member named 'read'
I am testing a set-up using the TinkerKit shield for Arduino Uno, and a few TinkerKit inputs and outputs. I have an issue with the code provided on the TinkerKit website for the potentiometer ...
-2
votes
0answers
49 views
hello progrmmer C [closed]
i am still a beginner in coding arduino am working on the project which is consist of two ultrasonic sensor and two vibe motor and servo motor and the code i need is to code thsi program as
first ...
-1
votes
0answers
17 views
Sending data on VB through arduino
I am trying to read data coming from Arduino.and display on VB.
Here it my arduino code
#include <MsTimer2.h>
int Analog_Pin=5;
int newaverage;
float Output_Current;
#define RELAY1 7
int ...
-2
votes
1answer
28 views
Relay activation
I am posting my simple code here, I wanted to print the Output_Current Inspite when delay function called.Below is my code.
#include <MsTimer2.h>
int Analog_Pin=5;
int newaverage;
float ...
1
vote
2answers
52 views
4-digit 7 Segment LED displaying numbers in the wrong order
I am a novice Arduino programmer and am currently having trouble with a SH5461AS 4-digit/7-segment LED when using it with an Arduino Uno. I have struggled to find an accurate datasheet/tutorial of any ...
0
votes
0answers
13 views
Receiver xbee receiving data while the Transmitter is powered off?
My receiver xbee is receiving data even if the transmitter is disconnected , so if i am sending the string hello world , the receiver will repeat this string .
void loop() {
...
0
votes
1answer
48 views
Arduino and visual basic Serial data
I am trying to send command serially through Vb.through serial monitor working fine . But Through VB it not detecting port
My arduino code:
int ledPin = 2; // the number of the LED pin
void setup() ...
0
votes
2answers
62 views
how to push data from an Arduino pin to Bluetooth module
I'm writing a software that can receive data from Arduino via Bluetooth. My software is pretty fine now, at least it can pair with my hardware but when I try to test whether it can receive data via ...
1
vote
1answer
36 views
Receiver xbee receiving data even if the Transmitter is not sending?
TX code:
#include <SoftwareSerial.h>
const int MAX_LENGTH = 2;
char buffer[MAX_LENGTH];
char lineFeed = 2;
SoftwareSerial Xbee(10, 11);
void setup() {
Serial.begin(9600);
...
0
votes
1answer
57 views
Arduino Uno R3 not working after shorting 5V to GND
While wiring up my new Arduino Uno R3 on a proto-board, I accidentally shorted the 5V pin directly to Ground. The LED's immediately turned off and connection was lost. It was powered by USB ...
0
votes
1answer
22 views
Blank Serial Print AdaFruit BTLE
I working on a prototype with an Arduino UNO and an AdaFruit Low Energy Blue tooth
I have an array of uint32_t that I am trying to send via blue tooth to a given device. I don't think i can send the ...
0
votes
0answers
20 views
Why did my MG995 servo motor stop working? Did I burn it out?
I'm working on a servo project. I connected 12 servos to a single Arduino servo shield and plugged in a 5V 10 amp switching power supply to the shield. Instantly, the motors became very hot and one of ...
0
votes
2answers
51 views
Serial data to arduino problem
I cant understand what is going on here , I was trying to find way to send through Serial a number for example 12 and then extract from it number 1 and 2 and store them in two different variables , ...
0
votes
0answers
34 views
Bluetooth HC-05 module returns encoded data
I have searched online, haven't found anyone hitting this issue but strangely my BlueTooth HC-05 is returning me encoded data. I have tried using different boards - Induino, Uno, Freeduino and I have ...
0
votes
0answers
31 views
My arduino board are short circuited how to fix it?
My arduino get damage by a Short circuit so i tried my board with a simple code it gives me wrong results so is there any way to reset or format it ?
0
votes
1answer
38 views
Connecting arduino to a PC
How would you send data wirelessly from arduino uno to a pc?
I know you can connect wifi shield / wifi breakout to arduino and use that, but what other ways are there and how practical would they be?
...
1
vote
1answer
116 views
How to power IR LEDs with arduino?
I need a circuit or something to power up IR leds as arduino only give 5v and IR leds needs 1.2V , IS there a way to make one arduino pin a power supply of 1.2 V code or something ?
0
votes
0answers
30 views
Sine Wave Inverter
I am working on building a pure sine wave inverter using an Arduino Uno to output two PWM signals for the top and bottom half of the wave. Currently I am outputting pre-calculated values with an ...
0
votes
1answer
36 views
Not able to send SMS to Mobile using GSM900A and Arduino Uno
I tried the code shown below (found here)
void setup()
{
Serial.begin(9600); //Baud rate of the GSM/GPRS Module
Serial.print("\r");
delay(1000);
...
1
vote
1answer
71 views
Problem connecting Arduino Uno with Wifi and NFC
I'm new here and also new to Arduino.
I've got a rather specific problem and I've posted to the official Forum
on arduino.cc two days ago (original Post)
Sadly, I've yet to recieve any help and ...
1
vote
3answers
71 views
Arduino starter kit servo is shaking
In the example of the arduino starter kit the point is to use a potenciometer to control a servo.
The code is
angle = map(potVal, 0, 1023, 0, 179);
The output in the serial
potVal: 1023, angle: ...
4
votes
1answer
43 views
Burning sketch with I2C
Not a pure Arduino question really. I'm actually using a standalone ATmega168. So far I've been using AVR-ISP programmer (working from AVR Studio) to program the chip. After everything is done, the ...
-1
votes
1answer
49 views
sample average of analog of current sensor
Here is my code. I have 2 problem in below code. This ACS712 sensor is too noisy so i am not getting count value properly .since i need approximate reading i consider curve is linear. and calculate ...
1
vote
1answer
41 views
How does serialEvent gets into main()?
Ok, serialEvent "runs after loop()" and it is not an interrupt.
AS far as I know main() has two functions - setup and "infinite" loop.
So where does serialEvent comes in?
And if I do not want ...
0
votes
2answers
86 views
Is it posible to make an Arduino send signals to an RC reciever?
I have found bunch of information about how to hack an RC car with PCB; and how to control an Arduino from a receiver. Also how to run a servo from an arduino, but im looking for a way to make an ...
2
votes
1answer
94 views
Salvaged Stepper Motor Blues
So recently my company threw away some rather large and reasonably old laser printers. One was a LaserJet 9050dn the other was a Epson printer/scanner combination. Being a little industrial I thought ...
-2
votes
0answers
57 views
How to interface GSM sim900A module to Arduino Uno Without using Shield?
Can anyone provide me a pin diagram of the connection between the GSM sim900A to Arduino Uno? and also a simple code to send an sms from the GSM module to a mobile number?.
0
votes
1answer
32 views
Sample code for using adafruit servo shield?
I would like to control 16 motors with a servo shield, however, I have found scant to nothing sample code online. The one I was able to find is...strange to say the least
...
0
votes
1answer
33 views
Keyboard Control Not Working As Intended
I'm trying to control a single motor.
If I press 'a', then motor 1 should turn to 0, if I press 's', then motor 1 should turn to 180
#include <Servo.h>
char key = 0;
const unsigned int ...
1
vote
1answer
79 views
Curious: What would happen if you connect 5V and GND port directly with a wire
Has anyone ever accidentally or inadvertently connected connected the supply port with the ground port with a wire?
Does Arduino provide internal safety to prevent the circuit board from shorting ...
0
votes
1answer
31 views
Why does my arduino seems to reboot every time that I open Serial Monitor? [duplicate]
Every time that I open the Serial Monitor, my arduino UNO, seems to go back to void setup(). Is it a normal thing?
1
vote
1answer
37 views
Arduino starter kit example LEDS modification
I just begun with the Arduino starter kit, and in the second example I would like to test some changes to learn more.
The point is to have a green LED shining, and when pressing the button the two ...
0
votes
0answers
22 views
ACS712 calibration
I am trying to measure current through load using ACS712 model. I need help in calibaring the current value. My setup uses 2 fans at present
the fan details as below.
FAN1 details fan 2 details
slno ...
0
votes
1answer
21 views
Is it possible to extend the reach of a pn532 NFC/RFID shield?
I am working off an Arduino UNO with an AdaFruit pn532 NFC/RFID shield. The goal is to have a shoe box, with a false bottom. Under that false bottom would be my prototype, which hopes to be able to ...
1
vote
4answers
149 views
Unable to terminate “void loop”
I have loaded an example sketch that came with the installation of the Arduino software onto my Uno.
void setup() {
Serial.begin(9600);
}
void loop() {
int sensorValue = analogRead(A0);
...
1
vote
1answer
51 views
Is it bad to leave my Arduino UNO on uninterruped? [duplicate]
I'm developing a project (Data logger) that requires that the Arduino remains on for several weeks.
Is it okay to leave it on for about 6 weeks? Do I need to frequently reset it?
0
votes
1answer
68 views
Arduino + simple DC motors? (4WD kit)
I am trying to connect 4 small DC motors to Arduino, like those in the following image:
The specification for each of them is:
Suggested Voltage: 3V DC;
No Load Speed: 65 ± 10rpm;
No Load ...
0
votes
1answer
45 views
Arduino not responding
I have been using my arduino uno for many months and it worked very well even till today morning but an hour ago I tried to upload a sketch and arduino IDE showed my this "avrdude: stk500_getsysc(): ...
-2
votes
2answers
66 views
Break statement terminating loop() [closed]
I am experiencing some very strange behavior with my arduino. I have a switch-case statement in the loop() method, and the break methods are not only breaking out of the case block, but also out of ...
0
votes
0answers
54 views
Can't connect arduino to wifi
I'm new to arduino so my question may sound stupid.
I bought a wifi shield which says that the chip is RN-171 I/RM.
I followed this tutorial: ...
0
votes
0answers
22 views
Xbee connection problem with PC
I'm trying to connect my arduino with PC with Xbees 1 series.
The configuration of my xbees are this:
xbee1:
ID: 3332
CHANNEL: C
DH: 13A200
DL: 40A8060E
SH: 13A200
SL: 40A805BF
AP: 2
Baud: 9600
...
1
vote
0answers
107 views
Arduino Hardware timer and interrupts issue
I recently started programming with Arduino and and currently I'm making a project to read RPM and Speed of my car using Arduino Uno. So far I got everything working but the speed value does not show ...
3
votes
2answers
220 views
Why does an Arduino UNO need two GND ports?
I have really bad eyesight, so whenever I plug in the power wire and the GND wire I always double check if I'm actually plugging in to the power port not two GND ports.
Why does an Arduino UNO have ...
1
vote
2answers
125 views
Can I power an Arduino with a computer's motherboard?
I was thinking of using my Arduino to turn on and off a computer remotely. I would like to know if the 5v header pin on a computer's motherboard (which I’m using instead of a USB because the 5v pin ...
