All Questions
3
votes
2answers
64 views
Difference between Arduino.cc and Arduino.org
Recently I have noticed that there are two arduino sites, arduino.cc and arduino.org. They both have the Arduino logo and both sell what seems to be official Arduino boards. Also, arduino.org came ...
0
votes
0answers
15 views
Can I change the USB device name of Arduino?
I have several Arduinos connected to my Windows PC, and they appear as follows:
COM7 (Arduino Uno)
COM11 (Arduino Uno)
COM13 (Arduino Uno)
So there's no way to tell which is which, and when ...
4
votes
2answers
24 views
Disturbed digital out at 4Mhz on Arduino NANO
I've written a simple program - it generates signals over Port D at 4 MHz:
#include <Arduino.h>
int main(void) {
DDRD = B11111111;
PORTD = B00000000;
while (true) {
PORTD ...
0
votes
1answer
20 views
How can I programming detect that a Bulb/LED is ON/OFF or a circuit is working as expected using Arduino?
I've created a circuit to turn on bulb using GSM module and Arduino. I want a mechanism(or programming) to know whether the bulb is on or off or fused. I've tried taking the input from the pins. But ...
0
votes
1answer
21 views
How to program thresholds?
Hello guys (and gals)!
I'm trying to figure out how to program thresholds using my arduino board.
Essentially, to make this as simple as possible, this is what I have going on.
I am sampling a ...
0
votes
4answers
48 views
Need help rewriting a program:
I can't use this program on my Arduino Uno since the max is 16 bits. I need my water pump to run for 5 min, then wait for 60 min.
int motorPin = A0;
int blinkPin = 13;
int watertime = 300000; // ...
0
votes
0answers
15 views
ATMega1284 and Relative Humidity libraries
I am trying to use some Relative Humidity sensors (DHT11 and DHT22) with the ATMega1284 processor on a breadboard. I use libraries from Arduino playground (dht.h), Adafruit (DHT.h) and others. Even ...
0
votes
0answers
20 views
Problem using ino build for 8 MHz
I want to use the Ino command line toolkit to build and upload my HEXes and it works well for the regular Arduino, however when I try to upload code to a Mini Pro 3.3V at 8 MHz the code has the timing ...
0
votes
1answer
35 views
This specific code just refuses to compile?
I've been working on some software to do REALLY basic composition of music.
Here's my code so far:
#include "notes_sharps.h"
int notes[] = ...
1
vote
1answer
15 views
What protocols and tools does Arduino Due use for flashing and debugging?
I am interested in writing a simple C program outside of the Arduino IDE and respective libraries, but deploying it directly to an Arduino Due (which uses a SAM3X8E ARM MCU). I am trying to figure out ...
2
votes
0answers
16 views
How to avoid pulling the RX0 pin to reset sketch
My project requires reading 5 serial devices (RFID readers) at the same time. I chose an Arduino Mega 2560 as it comes with 4 serial RX ports. For the fifth port I am using the SoftwareSerial library.
...
0
votes
1answer
21 views
Arduino-uno sending email with Hotmail
I want to get emails read from a Hotmail account using an Arduino Uno. Is there a way to do it with SSL or is there a way to disable SSL?
#include <SPI.h>
#include <Ethernet.h>
// Use ...
1
vote
1answer
36 views
How to make an RC mixer with the arduino
I want to make a RC mixer mixing two channels of a receiver.
What I have: a delta model plane, two servos, a receiver and a Arduino Nano.
So I'd like to mix the aileron (two channels) with the ...
0
votes
3answers
18 views
Sending serial data to Processing
I have a question about using the Arduino and Processing. I want to build a touch sensor using aluminum foil and connect it to an interface built in Processing. However i've come across a problem. I ...
0
votes
1answer
19 views
Do multiple ultrasonic sensors need an external power source?
So maybe it's a very low class form of question, but please bear with me. I'm working on a project with 7 HC-SR04 ultrasonic sensors connected to one Arduino. I tried to unify the trigger and echo ...
0
votes
1answer
19 views
Reading data from airspeed v3 eagle tree
I am trying to get values from this sensor Airspeed v3 from eagle tree but it seems my I2C is not working properly.
I bought a module in third party mode and followed these instructions from the ...
0
votes
1answer
14 views
Comparing orientation data obtained using gyroscope and accelerometer
Recently, I have been playing around with a gyroscope and accelerometer in the hopes of building a quadcopter. I have plotted some of the data the two sensors and I am noticing that the pitch from the ...
0
votes
0answers
12 views
How do I scroll through the LCD Vertically with joystick?
So I have a device im working on and the only issue im running into is I cant manage to figure out how to get my LCD display to move around vertically with the joystick I have attached to it. I have a ...
0
votes
1answer
24 views
Custom Bootloader on Atmega328p - PU - 28 pin DIP
I am experimenting with low-power wireless arduino modules. For that, I needed 3V powered arduino so that I can do away with voltage regulators which eat up a lot of battery juice.
I am using 28 pin ...
0
votes
1answer
21 views
Vibration sensor for arduino
I need vibration sensor for my project. I have found many sensors similar to this one. But it seems, that this sensor outputs only zeros for "non-hit" state and ones for "hit state". And I need ...
0
votes
0answers
14 views
How to fix Eclipse Android Error
How can i fix this Eclipse Arduino Plugin Error:
"The folder hardware does not contain any files."
I want to start on writing my Arduino App with the Eclipse PlugIn
but when I will create a new ...
1
vote
0answers
8 views
Venus GPS + Arduino. Kill 3.3V TX during sketch upload
I am playing around with the Sparkfun Venus GPS. I followed this tutorial to get started. In here the author states that you should
Upload the following sketch to your Arduino BEFORE making any
...
1
vote
0answers
24 views
How can I stop someone from hacking in to my Arduino via Bluetooth?
I am using an HC-05 bluetooth Module. How can I stop someone from pairing with my device by brute forcing the key? Failing that, and if someone does pair with my device, is there a way to authenticate ...
0
votes
1answer
8 views
Wifi REST API GET call - how to concatenate and pass URL parameters?
I'm not too familiar with the Arduino C++ language, but I would like to get this native code to work.
In curl this works:
curl ...
0
votes
1answer
31 views
Reading/writing to Arduino GPIO pins from raw C code
I'm interested in writing a C program without the Arduino IDE and related libraries and am trying to figure out how I can access the GPIO pins for read and write.
My assumption is that the GPIO pins ...
0
votes
0answers
17 views
arduino ethernet shield
I bought a ethernet shield for my Arduino Uno. I plug it my Arduino and PC with ethernet cable. There is all led is working on ethernet shield. But when i try to examples about ethernet which is in ...
0
votes
1answer
19 views
Arduino AD-converter tolerance
I created a quite simple Arduino sketch:
void setup() {
Serial.begin(9600);
}
void loop() {
int sensorValue = analogRead(A0);
Serial.println(sensorValue);
float voltage = sensorValue * (5 ...
0
votes
0answers
16 views
Uploading… forever
This is my code:
const int trigPin = 4;
const int echoPin = 2;
const int trigPin2 = 6;
int incomingByte;
int val, val2;
const int echoPin2 = 7;
void setup() {
// initialize serial communication:
...
-1
votes
1answer
28 views
Arduino Cross Correlation?
How can I write lightweight cross correlation code for arduino? I couldnt find any solution. The measurement system contains an ultrasonic sensor and a servo that turns from 45 to 135 degree and ...
5
votes
1answer
50 views
Arduino at 20 MHz?
I wonder why Arduino doesn't run at 20 MHz, the frequency the AVR is specified for. Now, running at 16 MHz, we're wasting 20% performance for nothing.
I don't think there are any implications when ...
0
votes
2answers
21 views
What is the function of the XBee / USB switch on an XBee shield?
I recently bought an XBee shield (this). The shield has a switch that seems to switch between USB/XBee. However, there is no USB port. What exactly is the switch supposed to do?
-1
votes
0answers
13 views
Arduino based Image Processing System that sends photos to Smartphone via Bluetooth
I would like to comprehensively understand the overall process of smartphone image processing: starting from the smartphone camera(lens and sensor), going through the hardware(CPU, specific image ...
0
votes
2answers
47 views
Interesting Problem with Arduino UNO Code(IGNORES VARIABLES SELECTIVELY)
This is the first code I wrote for my UNO R3 just to feel out the functions and I've already got some jankiness.(throughout this description I am referring the first two if statements one inside the ...
1
vote
0answers
20 views
Conflict between OneWire and I2C?
I have two Arduino boards and I want to make them communicate via I2C. The first board (slave) should read a temperature value from a DS18B20 sensor (OneWire) and send it to the second board (master) ...
2
votes
3answers
39 views
Sending sensor readings from Arduino to Raspberry Pi over 433 MHz
I'm building a garden monitor, so I got myself an Arduino Nano, a soil humidity sensor, an air humidity and temperature sensor as well as a luminosity sensor. Since I had not one but two Raspberry Pis ...
-1
votes
1answer
18 views
ardino gsm not working
I'm trying to get my arduino GSM shield working with the example "Send SMS" code provided. However, when I upload and compile the program, the serial monitor displays "SMS Messages Sender" and nothing ...
0
votes
2answers
36 views
DHT11 with Mysql
I need help to record databаse from dht11 sensor to mysql server.
this is my code:
#include <DHT.h>
#include <Ethernet.h>
#include <SPI.h>
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, ...
1
vote
1answer
31 views
Using Arduino command line on windows
I have an nmake file;
srcpath = ..\pilot
cmdline = "C:\Program Files (x86)\Arduino\arduino.exe"
cmdflags = --verify --board arduino:avr:uno --port com4 -v --preserve-temp-files
prefs = ...
-1
votes
0answers
26 views
How to upload an algorithm for the raspberry pi? [on hold]
In the Arduino I know to upload an algorithm simply delete the chip. But I do not understand whether it is possible to do the same in the raspberry pi. How to upload an algorithm for the raspberry pi?
...
1
vote
1answer
13 views
Serial device file no longer shows up in /dev/ after working fine for months
I am using an Arduino MEGA connected to my Linux workstation via USB. I have been using this setup for several months with no issues.
A few days ago, the usual serial device file (/dev/ttyACM0) ...
0
votes
1answer
16 views
Passing VAL(0-179) to OLED
I´m using Spark Fun Micro Pro board 5V: https://learn.sparkfun.com/tutorials/pro-micro--fio-v3-hookup-guide/hardware-overview-pro-micro
and to that i´ve hooked a true color OLED from digole: ...
0
votes
1answer
29 views
Arduino Start en Stop
Is there a way to set a time for instance 8.00 PM to make the arduino-uno start or stop at that time?
0
votes
1answer
14 views
connection between two ARDUINO with xbee
I have a setup where two XBEES modules are talking to each other, both using XBEE shields, one attached to an UNO ARDUINO and the other a MEGA ARDUINO. One XBEE sends the data and the other receives ...
-2
votes
1answer
44 views
aduino question [on hold]
Create a set of electronic dice. use the random function. It is important that you “seed” the random number generator properly to avoid showing the same numbers over and over. When you press a ...
1
vote
1answer
69 views
does data came on serial port store for some time?
I am using arduino uno and my question is when data is coming on Rx pin and at that time our program is not checking Serial.availabe() .Then after some time program will check Serial.availabe(). Can ...
0
votes
3answers
31 views
How to control 2 servos at same time in sync?
For overcoming torque issues, I have attached 2 identical servos on a certain part of my robot arm and because I saw someone do the same.
Now, while writing code I realize:
#include <Servo.h>
...
0
votes
3answers
43 views
Arduino clock needed to print the time a button is pressed while continuing to count the time?
I'm making a clock using an arduino uno and a compatible freetronics screen. So far it can count the time in a 24 hour loop after which it repeats and counts again. The screen had a number of buttons ...
0
votes
1answer
14 views
Can the Arduino Due be used as a serial to USB converter?
The Arduino due exclusively runs on 3.3V, so I am wondering if this can be used as a USB to serial converter just like the Arduino Uno could, or do you need to do level shifting?? Will I ruin the ...
0
votes
0answers
19 views
LCD display intensity. Mega2560
I've looked it on the forum and I haven't found it!.
I am trying to control an aquarium with an Arduino. But, when I connect everything, the LCD doesn't show correctly the data on the 2nd line. It is ...
2
votes
2answers
39 views
Why is SoftwareSerial causing arduino to reboot?
I'm trying to design an RC controller using an Arduino and an XBee Series 2 Pro. I have the hardware serial running for debug information and I want the XBee to be connected to a soft serial on pins 8 ...
