All Questions
0
votes
0answers
4 views
Arduino Nano - Verification error
I'm new to Arduino; and I'm trying to upload a VERY simple sketch to a new Arduino NANO
I tried a few sketches (blink / helloworld / empty one); and changing the USB PORT.
Windows find the correct ...
0
votes
0answers
3 views
Problem with oriented connection and XBee library
I have a question about the XBee library for Arduino.
My code sends fine a packet, but, in some cases, the receiver is busy rebooting or responding to another XBee. My code for sender XBee doesn't ...
1
vote
1answer
12 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
0answers
13 views
Trying to start a timer to change lights when a button is pressed
I am trying to setup a series of lights (traffic lights) that change based on a timer that begins when a button is pressed. The goal is to use the lights to track how long its been since you pressed ...
1
vote
1answer
12 views
Looking for a Mega 2650 drawing or picture that shows the components labeled
I am Looking for a Mega 2650 drawing or picture that shows the components labeled.
I've seen the schematics but didn't find a labeled assembly drawing yet. Should this exist?
Thanks
1
vote
1answer
11 views
Extracting a substring from original string
I am trying to extract a substring out of another string, but it doesn't seem to be working. I am new to programming in arduino and c++ in general. Here is my code:
void setup()
{
...
0
votes
0answers
23 views
What is a current consumption of arduino nano
What is a current consumtion in normal state and idle of Arduino Nano on 5V without using leds and suppling power by pins?
1
vote
1answer
15 views
How do I use SNAP protocol, correctly?
I've reviewed the documentation
I'm still a little lost when it comes to applying the functions. Each of the redundancy check methods take in an unsigned char and return an unsigned char.
Shouldn't ...
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 ...
1
vote
1answer
12 views
How to design and debug a custom I2C master-slave system?
How to proceed, when in need of a custom I2C master-slave system?
What are the design criteria to apply?
What are the debugging tools one can use to troubleshoot problems?
0
votes
0answers
3 views
Bluetooth and another sketch
I uploaded a bluetooth sketch from IDE (File->Examples->Firmata->Standard Firmata) to Arduino Duo.
Now if I have a sensor attached to this Arduino, I can use bluetooth from another device (Raspberry ...
0
votes
0answers
17 views
Arduino Due Serial garbage
I have made a custom board based on the Arduino Due but have some problems with the Serial communication with the 16u2 chip.
i have usb connection with the 16u2 chip and was able to load the ...
2
votes
0answers
18 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
0answers
8 views
Running script file/programe on Intel Galileo gen2
How do I run a script file/programs like C / python / shell script in an Arduino IDE like how We use System();
Commands like grep, cut, cat works fine but running System("python file.py"); doesn't.
...
1
vote
4answers
32 views
How do I connect a vibration motor to Arduino?
I'm trying to figure out how to connect a vibration motor to my Arduino. I've come across this resource and it seems pretty straightforward though for a while my eye glazed over at how complicated ...
3
votes
2answers
17 views
What would be the architecturally-right place to put custom -D defines?
What I am trying to accomplish is to include information about the state of my environment at build time in my code. For example, I may want the setup() code to print the git sha it was built against, ...
0
votes
0answers
5 views
Connecting Pulse Sensor to RFDuino Simblee
I am trying to make a heart rate sensor watch. I am trying to do this using a Simblee (www.simblee.com) and a Pulse Sensor (www.pulsesensor.com) however they will not work! The original code from ...
1
vote
3answers
26 views
LCD readout is odd
I want it to display the current temperature in the middle of the screen, fade out for two seconds, display new temperature, rinse repeat. This is current (see images)]2
/*
* File: ...
0
votes
1answer
12 views
Which GSM-shield is most efficient for GPRS communication?
I tried Google, I tried a bunch of forums and I searched here. This question needs a final answer:
Which GSM-shield is most efficient for GPRS communication?
Since Arduino is the amateurs best ...
0
votes
0answers
15 views
Arduino Pro Mini I2C Problem
I am trying to connect a distance sensor VL6180x to Arduino Pro Mini via I2C. Yesterday it was working without any problems, but today it refuses to work, even though I haven't changed anything. The ...
0
votes
2answers
34 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
1answer
12 views
IR remote unstable button numbers
Question
Is there a reason for unstable button numbers of an IR remote?
Desciption
I wrote a remote class where I identify the pressed number of the remote to set states. But however I get never ...
0
votes
0answers
15 views
GSM module does not work properly with arduino
I am using Arduino Mega 2560 and GSM module SIM900A. I have connected module with 12V adapter which can provide 2A. I have connecte RX and TX to pin 50 and 51. Gnd to Gnd of module. Some time its work ...
1
vote
0answers
21 views
MCP4725 not working
I tried using a MCP4725 DAC with an Arduino (M0 Pro, Duemilanove and Diecimila) and it is not outputing any voltage (just random noise).
I've been using the 2 tutorial codes fount here : ...
0
votes
0answers
33 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
50 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?
1
vote
2answers
63 views
Why is my pushbutton always reading LOW?
I know this is ridiculously simple task but I spent the last two hours trying to get this to work and it is not working. I don't have an Arduino but I have an ESP8266 Huzzah Feather which is ...
0
votes
0answers
18 views
Assembled redboard PTH kit, when I turn it on the led flashes increasingly fast and stops
I assembled the following sparkfun redboard: https://www.sparkfun.com/products/retired/10776
When I plug the board in it start to blink but increasingly fast until the LED stops.
I'm very new to ...
0
votes
3answers
48 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 ...
1
vote
1answer
27 views
ATTiny85 433Mhz with sleep
I would like to micromize my Arduino project and move it to ATTiny85. The first step was using sleep functions because I just want it to run once a day. Now I need to connect the 433Mhz stuff but I'm ...
2
votes
0answers
22 views
Flickering LCD backlight with fingerprint scanner
I have the following problem: for some *** reason, my LCD is flashing when my fingerprint scanner turns on. Here is a video of the behavior: ...
0
votes
2answers
20 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
9 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 ...
-1
votes
3answers
32 views
Is that correct that input and output pins are not supposed to have current through them?
Are input and output pins not supposed to have current through them and only either apply voltage or "measure" it?
0
votes
2answers
29 views
What minimal resistance should be between an input and output pin not to burn Arduino?
So, I'd like to put a button between input and output pins to read when button is pressed. What minimal resistance should I add to the scheme not to burn Arduino when the button is pressed? Does this ...
0
votes
1answer
12 views
Reading file from SD Card
How do I read file from SD card on Intel Galileo Gen 2 which has an inbuilt SD card?
I tried the programs from Examples but they aren't working.
I am not using any Ethernet Shield.
and communicating ...
1
vote
1answer
32 views
How do I use an AtTiny85 (or other AtTiny) with Arduino?
Please mind that this is an "example" question.
How to make a "tiny arduino"?
I've ordered a bunch of ATtiny85's off E-bay, they're like tiny Arduino's.
I've set up the latest Arduino IDE and would ...
-2
votes
1answer
27 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
50 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
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
32 views
How to control relay using SIM800 and Arduino Mega through SMS?
For my project I need to control relays through SMS and now I can send SMS from my SIM800 module which is connected to Arduino Mega R3. But I tried several shapes for AT commands to receive SMS and ...
0
votes
1answer
18 views
How do we connect 2 FSR sensors to an Arduino Mega?
One can connect an FSR sensor (a force-sensitive resistor) to an Arduino via 5V, Gnd, and A0 port (as below, according to an adafruit.com page), but how will it work for two of them instead of one?
...
0
votes
0answers
16 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
2answers
29 views
What are the consequences of different clock speeds on different boards?
I am a programming amateur, arduino noob, trying to decide which board will be better for my project. I need a small board. I am trying to decide between the Teensy 3.2 and the RFduino. I want to have ...
0
votes
1answer
8 views
Simulator for AD8232 Chip
How can I get AD8232 chip in Arduino simulator?
It is because I have my ciruit comprising AD8232 analogue chip but I dont get this chip? I want to make simulatoin of my ciruit.
If it is can not be ...
0
votes
2answers
46 views
While loop not breaking
I'm trying to build a circuit that buzzes until a button is pressed, or it buzzes 5 times:
void alarm()
{
int AlarmState = 0; //Just to get while loop going
int count = 1;
while(AlarmState==0)
...
0
votes
0answers
21 views
Compiling Error 3 Wire LCD
When this 3 wire LCD code is compiled the following message results:
NewLiquidCrystal-master\I2CIO.cpp:35:26: fatal error: ../Wire/Wire.h: No such file or directory
#include <../Wire/Wire.h> ...
