Questions tagged as 'arduino'

Tagged questions
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Bluetooth communication between Ionic and arduino

I am trying to understand the operation of the serial bluetooth plugin in a simple application with Ionic 3 that communicates with an arduino nano connected to an HC-05.It seems that the plugin sends and receives the data in an ArrayBuffer, or a...
asked by 02.08.2018 / 16:38
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App closes on Activ. 3 when pressing one of the buttons and does not send the data to Arduino. You could help me, I'm new to Android Studio, thanks!

Activity 1 (This is where the list of linked devices is made) package com.example.artur.micasav3; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.content.Intent; import android.support.v7....
asked by 26.07.2018 / 07:11
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would like to know how to turn on a led when the if condition is met (compareArray (ActualUID, User1))

//RST D9 //SDA(SS) D10 //MOSI D11 //MISO D12 //SCK D13 #include <SPI.h> #include <MFRC522.h> int salida = 7; #define RST_PIN 9 //Pin 9 para el reset del RC522 #define SS_PIN 10 //Pin 1...
asked by 18.07.2018 / 03:52
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error 'MIFARE_Key' in 'class MFRC522' does not name a type

//RST D9 //SDA(SS) D10 //MOSI D11 //MISO D12 //SCK D13 #include <SPI.h> #include <MFRC522.h> const int RST_PIN = 9; const int SS_PIN = 10; //Declaracion de cadena de caracteres unsigned char...
asked by 16.07.2018 / 15:16
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problems in compilation jfreechart and netbeans

I have a program made by using RXTX library (or jSerialComm, I'm not sure because it seems that it takes any of the 2 same code) the data sent by arduino sensors. Then I graph them using the JFreeChart library. Everything works like a charm whil...
asked by 07.06.2018 / 19:29
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Of 9 sensors that I have assets circulating in the arduino, 3 give problems. Help!

I said sensors, but they are 8 sensors and 1 external clock module. That title would have been very long! I am creating a module that is detecting the different components of my garden (temperature, oxygen, etc). The values are sent by the se...
asked by 07.06.2018 / 02:42
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Problem with reading GPS data with SIM808 module

It's been trying for a long time to run my SIM808 module, I have problems when reading the data, execute the power-on and parameterization functions correctly, the problem is when reading the data, since it does not return anything and the progr...
asked by 06.06.2018 / 16:27
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Using the Arduino Ethernet Shield

As I understand the Arduino Ethernet Shield when used with the Ethernet and SPI libraries, due to the latter uses the ICSP pins of the Arduino to communicate the latter with the W5100 chip and micro SD card. I am using the Mega2560 R3, therefore...
asked by 04.06.2018 / 10:22
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Problem with cart in arduino, direct to a point following line

I am new to arduino and I have some problems to make my robot advance through a web application. I describe what my robot does: I am using 2 sensors (IR1 and IR2, see code) in the front of my robot cart, if you read WHITE / WHITE, the cart mo...
asked by 29.05.2018 / 01:09
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Voltage Light Sensor Assembler

I'm doing a home automation project with an UNO arduino and I have to use a light sensor, however since in assembly there is no analogRead function () I have to program it, I already read the documentation of avr and atmel about the ADC, the MUX...
asked by 25.05.2018 / 06:47