The Arduino Uno is the most common of the Arduino boards. It is based on the ATmega328 microcontroller.
-1
votes
1answer
10 views
How can we connect Arduino with matlab for displaying the value detected through the Arduino Uno [on hold]
i need the codes as well as the steps from the starting.
a = arduino('COM5');
and then do stuff like:
av = readVoltage(a,5);
writeDigitalPin(a,13,1);
delete(a)
or if you have an Adafruit motor ...
0
votes
1answer
15 views
Sending Data between two boards using SoftwareSerial
I'm attempting to connect two Arduino boards to eachother using SotwareSerial as the title suggests!
The two boards are 1) Arduino UNO and 2)MultiWii Controller (MWC) FLIP 1.5 (Uses ATMega328 chip).
...
0
votes
1answer
17 views
Transient and reverse current
Does anyone know (1) how much transient current can be output from a pin and (2) how much (and how long) reverse current an output pin can take? For instance, consider the following circuit (driven ...
0
votes
1answer
20 views
Will the Uno bootloader work in the Duemilanove?
I had an old duemilanove lying around (Which was not working because i accidentially busted the atmega) and I recently bought some atmegas pre-flashed with the UNO bootloader. So I tried to put one of ...
1
vote
1answer
27 views
Tone() working on all digital pins?
Looking at my Arduino Uno board, it appears the digital PWM pins are #11, #10, #9, #6, #5 and #3.
When playing around with the Theremin, it seems that the Tone() message works on all pins regardless ...
0
votes
1answer
23 views
Arduino Uno not Detecting on Laptop
I have an Arduino Uno. The story is I installed Arduino IDE and Drivers before even buying an Arduino Board. I used it a little and when I bought and connected an arduino board, I was unable to make ...
2
votes
0answers
26 views
Is SMS format depends on the sender mobile?
I want to read the SMS using Arduino and GSM module, I want to perform conditional programming based on the received SMS.
What I found really interesting is SMS format is different if I send message ...
0
votes
1answer
16 views
Toggle Button For LED Strip not executing properly
I have been using a library to control a LED Strip with buttons. My current code does not execute properly. It skips the if statement and just runs the code in a loop with no regard to the button and ...
0
votes
1answer
39 views
NODEMCU vs AT for esp8266
I have recently started working on esp8266 wifi module and arduino uno.
I am a little confused.
I have created a small Web page with esp8266 AT commands.
Now I want use it for receiving data such as ...
0
votes
1answer
50 views
Why my sensors not working (the reaction time is so slow)
//testing the light sensor;
int sensor=A0; // setting as input is by default;
int sensorval;
int pin=13;
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
...
0
votes
0answers
15 views
'AttachPinChangeInterrupt' was not declared in this scope
I am a beginner trying to upload the SimpleExample328.ino sketch on my Arduino uno. When I verify my sketch however,i run into the error "'AttachPinChangeInterrupt' was not declared in this scope." I ...
1
vote
0answers
11 views
CC3000 Wifi: Enable Debug
I am using the Adafruit_CC3000_Library. I've followed the WebClient.ino example sketch. I'm able to make 300-400 HTTP requests, but eventually the connection will hang. Thus, I'd like to debug.
...
1
vote
1answer
53 views
Ethernet shield not have MAC address sticker [duplicate]
Hi everyone I recently bought an Arduino Mega and Arduino Ethernet Shield. There are lots of forum posts that say the shield should have a MAC address that is written on the back side of shield, but I ...
0
votes
0answers
13 views
Possibility of interfacing accelerometer, Arduino Uno, and GSM module together
I want to connect:
An accelerometer (ADXL335/337);
An analogue to digital convertor (ADC0804);
An Arduino Uno, and;
A GSM module (SIM900a).
I want the GSM module to function only when a certain ...
1
vote
1answer
23 views
Can a shift register be used to extend the Arduino pins when an ethernet shield is mounted on the Arduino?
I am currently working on a wireless home automation system. The system is connected to a wireless network in the home via the ethernet cable connected the ethernet shield and router. Hence, I need ...
1
vote
1answer
38 views
How to measure output of the ultrasonic transducer?
I have found a test circuit for the ultrasonic transducer. How do I measure the output distance sensed by the ultrasonic transducer using my Arduino Uno R3? Please help.
I have attached the test ...
0
votes
1answer
29 views
Arduino User Input
Is it possible to accept input from an end user via terminal, or some other application?
I want to create a prototype for a friend, but he'd need to enter his wireless network and password to ...
0
votes
1answer
17 views
Sim900a keeps restarting
I have a SIM900a module which I'm using with an Arduino Uno. I managed to connect to it and send commands at first, using Arduino 5V as supply. But after a while, whenever I try connecting, it blinks ...
0
votes
1answer
28 views
Arduino not detected On El Capitan Public Beta 3
Since I updated to El Capitan Public Beta, my Arduino Uno doesn't show up in the serial devices list.
The System Information utility shows an Arduino connected on the USB port (as 'Communication ...
1
vote
1answer
15 views
Will it work ? MPU6050 Gyro etc. etc. module
Will this code read the values properly ?
Using MPU6050.h.
#include <MPU6050.h>
#include <Wire.h>
void setup() {
Serial.begin(115200);
Wire.begin();
MPU6050.initialize();
}
void ...
0
votes
0answers
39 views
Arduino Software serial not showing the received data
I get the data from a sensor which is in RS485. I am using RS485-RS232 Converter. Then its given to uart usb converter and I get the data in TTL. I am able to receive the data in uart ...
0
votes
3answers
42 views
Heads Up Display Helmet With arduino
I want to make a HUD Helmet similar to the one shown in Ironman movies. Please suggest me some links and parts needed for this type of project
0
votes
1answer
38 views
Interrupt variable not getting called while executing another part
volatile byte _incomingFlag = 0;
void onIncoming () {
_incomingFlag = 1;
Serial.println(F("You got an interrupt"));
mySerial.println("ATH0");
}
void setup () {
/* First Start the ...
0
votes
0answers
51 views
Issues in interfacing the Relay with Arduino
I want to control AC bulb with Arduino, 5v-relay.
My connections are
My code is
#define RELAY1 7
void setup()
{
pinMode(RELAY1, OUTPUT);
Serial.begin(9600);
}
void loop()
{
...
0
votes
1answer
26 views
Controlling Protoneer CNC shield without PC
I'm building an small CNC using Protoneer CNC shield, GRBL and Arduino UNO.
With this I need to connect the board to PC and send G-Code from there.
My question is, is it possible to use the arduino ...
0
votes
1answer
26 views
is there any possibility of connecting ACCELEROMETER + ARDUINO UNO + GSM module together?
I am lakshman a mechanical engineer,i have a question that is there any possibility of connecting ACCELEROMETER + ARDUINO UNO + GSM module together???
so that i can take the output value from ...
0
votes
1answer
50 views
Arduino Uno & Simulink - high frequency pulses
I'm trying to control a large stepper motor with high frequency pulses (eventually around 4kHz), but what I get out of the simulink scope is super different from what the Arduino is putting out. I'm ...
0
votes
2answers
44 views
2,5m cable too long for LCD connected to Arduino UNO?
So i got that 2,5m cable wired with the LCD and the arduino, but i keep getting those weird characters showing up on the LCD. Clearly there is a signal loss between the components but there has to be ...
0
votes
1answer
29 views
Arduino Control over the internet [on hold]
I want web access to a hardware, through arduino uno, instead of having a pc slave, the thing is just use arduino as a bridge
0
votes
1answer
41 views
MCP23017: 16x2 LCD showing black boxes
I've researched a lot but I couldn't find a solution to my problem, which is that after properly following all steps from this Website: ...
0
votes
2answers
44 views
What is the Vin Pin for?
I always asumed it was a different option to power the board, but it seems to act more like a 5V supply. What then is the difference between this pin and the 5V pin?
0
votes
2answers
37 views
Can I supply the board's 3.3V directly to the AREF pin?
Short dumb question: can I connect the 3.3V pin and the analog reference pin (AREF) directly?
I've heard mentions of a 32K internal resistor but I'm not willing to risk a short circuit without ...
1
vote
1answer
23 views
What requirements should components have to work with Arduino (UNO in particular)
I am fairly new to the whole concept of Arduino and electronic engineering in general.
Recently I bought myself an Arduino UNO and I'm wondering what "non off the shelf" components will work when I ...
1
vote
1answer
19 views
Programming “Arduino” code to AT90S8515?
I found (from a previous life) an STK500 and a couple AT90S8515's in the recesses of my basement.. that I would like to put to use.
Is there a way in which I can write "arduino code" for the 8515? ...
0
votes
2answers
27 views
Arduino car on bluetooth remote appears to crash when motors started
I built a Arduino robot car which accepts instructions via bluetooth. The instructions are pretty simple, they tell the car to stop, go forward, reverse, turn left or turn right.
When I have the car ...
1
vote
1answer
45 views
Sending “Blink” to pin 12 is causing on-board led to blink?
I recently picked up an Uno clone and noticed that if pin 12 is set to an output and I run the Blink sketch on it, the built in led (supposedly connected to pin 13) blinks. It's not as bright as it is ...
0
votes
0answers
31 views
Turn on light (bulb) with Arduino UNO and PIR Sensor [on hold]
I'm trying to turn on the light (bulb) with my arduino UNO and one module with 4 relays. I can do it with one LED but with an bulb i can't. I have connected the wires like in the photo:
I need a 1k ...
1
vote
2answers
47 views
I would like to control 16 motors with a servo shield
I'm using an Adafruit servo shield.
I can make my servo move. However, I want to stop it at 90 degrees without it returning to 0 degrees each time.
What am I missing?
The code I've used is as ...
0
votes
0answers
41 views
DHCP Failing on Arduino Uno
I have an Arduino Uno with and Ethernet shield. There was a project which had it connecting to the network. It no longer does. Through debugging, it seems that Ethernet.begin(mac) == 0 never returns, ...
0
votes
1answer
26 views
Bluetooth connection and RX ,TX
I have connected a RN-42 bluetooth (TX-D0, RX-D1, VCC-5V, GND_GND) to arduino.The problem is that when I run this code ,nothing happens it just upload to infinite or it doesn't. I am checking with ...
0
votes
1answer
29 views
Building a digital camera?
Does anyone know of a way to DIY a digital camera by buying a sensor and lens and processing the image using an Arduino?
0
votes
1answer
38 views
Why I could not read the other sms's except the first SMS?
I have to read the incoming SMS on my GSM module SIM900, and I want to print the sender number and message to the serial monitor.
I first configure the GSM module with AT commands and Response() ...
0
votes
1answer
20 views
Strange comportment of stepper motor while connected to internet
Problem moving a stepper motor after reading a value from a webpage....
I have a project to move a stepper motor from an angle after reading a number from internet; I have a typical 28BYJ-48 stepper ...
0
votes
2answers
44 views
Uploading a simple sketch takes forever
I am trying to upload this simple sketch into my arduino with a shield I made. It takes forever (note I have the right COM port on)
int sensorValue = 0;
void setup(){
Serial.begin(9600);
...
0
votes
1answer
30 views
nRF24L01 module using Mirf library was working and then stopped
I have two nRF24L01 modules, they are both attached to a sensor shield that has special ports for this type of module, on Arduino Unos.
I have this code on the Arduino that is sending the signal:
...
0
votes
1answer
52 views
Want to add an LCD display screen for the output motor
I want add an LCD display screen at output motor. When the motor runs the LCD display show like "motor 1 run forward" and "motor 1 run reverse". I want it display for all motor but I don't know how ...
1
vote
1answer
55 views
Arduino UNO not working?
Recently I assembled my Shapeoko machine, we used Grbl shield with an Uno for the same.
For 1-2 weeks everything worked perfectly then once when I tried to work the machine, the serial communication ...
0
votes
1answer
19 views
nRF2401 communication (extended vs normal)
Communicating to the antenna-less version from an extended range nRF2401 seems to produce some strange results...
At a distance, the receiver seems to receive a number of values instead of one. For ...
0
votes
3answers
36 views
Self-diagnose components in the circuit
How can I tackle self-diagnosis problem within my Arduino project?
For example, I have a temperature sensor and humidity sensor. How can I know if they work or not on Arduino start or inside the ...
0
votes
1answer
57 views
that no matter what the inputs are Motor1 always moves
int motor_forward1 = 7;
int motor_reverse1 = 6;
int motor_forward2 = 5;
int motor_reverse2 = 4;
int motor_forward3 = 3;
int motor_reverse3 = 2;
int sensor1 = A0;
int sensor2 = A1;
void setup()
{
...
