Questions tagged as 'arduino'

Tagged questions
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I need to graph the data of a sensor in python and when the figure is opened it does not respond. Is there a problem in the code?

I need to graph in real time the values I read from a sensor connected to a mega arduino. This is the arduino code: void setup() { Serial.begin(19200); } void loop() { int num = analogRead(A0); Serial.println(num); delay(50); } and the co...
asked by 18.02.2018 / 02:53
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Error in http client

I am trying to make a code that every time the arduino card is rebooted (Arduino Ethernet connected to Arduino UNO), values of an http request are collected. The problem is that sometimes I get the result of that request which is the following:...
asked by 12.01.2018 / 00:11
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Framework for Arduino [closed]

Good Colleagues, I have a strange question, I want to use a Firmdata for arduino, to be more specific Jhonny Five or Cylon JS library, but my query is as follows, these signatures work only if the arduino is connected to the team or also also...
asked by 20.11.2017 / 15:02
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Help with project to connect Arduino and web server

I'm trying to do a project where I want to move servomotors from a web and I can not do it. The server is a Raspberry Pi and I want to move the servomotors with some sliders. The thing is that for the servomotors to move I have this code on the...
asked by 27.08.2017 / 23:32
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Error sending arduino data to my local server

I have a problem to send my sensor data to a local server, I had already tested it with a single sensor and it worked for me, it was the lm35, now that it adds another sensor I can not send the data, in arduino it tells me that everything is cor...
asked by 09.08.2017 / 10:18
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How can I send a string to Arduino using an NFC shield?

I am trying to open an electronic lock with Arduino, an NFC Shield and my mobile device. I have designed an app in Android Studio in which I must enter a combination of 5 digits and activate the NFC synchronization to send the data to the NFC Sh...
asked by 06.06.2017 / 02:45
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How can I operate a 24V electric lock with Arduino?

I have a circuit where I connect an Arduino to an NFC Shield and this one to a breadboard. My goal is to activate an electric lock that works with 10-24V AC and DC, for this I have placed a 2N2222 transistor and a resistance of 330 Ohms. The...
asked by 15.05.2017 / 23:07
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radio.write () always returns 0

#include <nRF24L01.h> #include <RF24.h> #include <RF24_config.h> #include <SPI.h> #define TAMMSJ 10 RF24 radio(9,10); const uint64_t pipe = 0xE8E8F0F0E1AA; char msj[TAMMSJ]; void setup() { Serial.begin(9600); r...
asked by 16.04.2017 / 01:47
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SpacebrewYun: undefined reference to 'Console'

I am trying to use the Arduino Yún board with one of the examples ( < em> spacebrewBoolean ) that has the same library, but in doing so I can not compile the code that comes in the example, what could it be? It returns the following errors:...
asked by 25.11.2016 / 17:45
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How to use the GSMshield2639 with mega arduino

I am using a plate of sparkfun called MG2639 is for GSM . The problem is that I can not run it with Arduino mega , and I need to run it in mega since my code will not share Arduino uno or Arduino Leonardo...
asked by 08.09.2016 / 01:55