Questions tagged as 'arduino'

Tagged questions
3
answers

Doubts Arduino

Good evening guys, Well, I have some doubts about Arduino, but I'll give it a contextualized one. Well then, I'm going to use Arduino on a project of mine, and I've been looking for a lot of it to learn, but I find little material specifying...
asked by 22.07.2015 / 04:36
1
answer

Arduino + PHP + MySQL

I do not know about PHP, so I'm having some doubts ... I'm trying to implement a connection of the three systems mentioned in the title. The idea is to capture two sensor values and send them to php and then to mysql. But before that, I'm having...
asked by 09.09.2018 / 22:10
1
answer

How do I create a sum () function for arduino? W

Angles ang = {0.0,46,0,91,2,134,7,179.2} were measured, the unit is deg (steps). I have to implement code that initializes the values as a global array, and then sets the void function sumCum (float arr []) {} which calculates cumulative sums (S...
asked by 09.01.2018 / 19:08
1
answer

Arduino Ethernet Shield and PHP

Hello I am developing a code for arduino + ethernet that triggers GET (PHP) methods, and PHP sends the data received from arduino to MySQL. The code in php works fine, ethernet can connect to the server through port '8095' but can not trigger...
asked by 13.08.2017 / 05:02
1
answer

Value of char * is shown even where it was not called using Arduino

This is exactly what I'm using: #include <SPI.h> #include <Ethernet.h> byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; // Tentativa frustada, possui o mesmo problema: //uint32_t i; //uint8_t* TotalRequisicao; /////...
asked by 16.02.2017 / 04:49
1
answer

What ideal network protocol to communicate an Application with Arduino?

I've done creating an app through Android Studio. I have an Arduino Mega, Shild Ethernet and infrared sensors. I would like to communicate my arduino with my application over the internet. Ex: I was traveling, when the infrared sensor trig...
asked by 13.08.2016 / 00:47
1
answer

Receiving data through the connection between arduino and the internet (Ethernet shield)

I built an app to receive data from an arduino-connected sensor over the internet using an ethernet shield. For that I got the result of the page and separated only the measure of the sensor in android. I was able to get the result of the pag...
asked by 20.12.2015 / 13:05
1
answer

C ++ if select object

I'm doing a program for arduino written in C ++ to turn on and off leds when a button is pressed. I created a class Led and put the methods in it, now I wrote an if that checks when a button is pressed, however I want it when the if verify that...
asked by 03.08.2014 / 22:40
0
answers

Arduino LCD Display does not display message [closed]

I'musingthe simulator simulator. I can not make the test message appear on the display. When the call does not appear, only the display will turn on. What am I doing wrong? Do not mind the other components, just the test message to b...
asked by 01.01.2019 / 19:05
0
answers

Divergence in reading

I made a sketch for Arduino MEGA, where it receives data by Serial2 and displays in the Serial, the communication happens but the byte sent is not the same as received, for example: Send 0x01, receive 0x7F Send 0x99, receive 0x33 void s...
asked by 23.10.2018 / 21:54