arduino

问题 I am trying to get the micro-coap librarby (https://github.com/1248/microcoap) to work on my arduino. When I try to compile it in the Arduino IDE, it reports that <sys/socket.h> dependency in main-posix.c can not be found. Searches for the problem were not helpful, except for some general C++ answer that was hinting that there is no sys/socket.h on Windows. But this should not have anything to do with Arduino right? I looked at the ethernet library for arduino and there is a socket.h but it

问题 I have a Arduino Uno R3 and a Bluetooth Mate. When linking the Mate to the Arduino Hardware Serial (pin 0,1) I can send multiple characters at once from my connected device but when I try to make the same thing with Software Serial (using pin 4,2 for example) I only get the first character and the rest of the chars are messed up. My code: #include <SoftwareSerial.h> int bluetoothTx = 4; int bluetoothRx = 2; SoftwareSerial bluetooth(bluetoothTx, bluetoothRx); void setup() { Serial.begin(115200

问题 I've been trying to plot serial data from an arduino in real-time using matplotlib's animation function. The data comes from a ntc temperature sensor. The plot I was able to get displays a sigle line all the time, and the line is only translated up or down as the teperature changes. I'd like to know what can I do to view the curves representing the changes in the plot. Here´s the code: import serial from matplotlib import pyplot as plt from matplotlib import animation import numpy as np

问题 How to stop contiguous state change upon button hold? const int btn = 5; const int ledPin = 3; int ledValue = LOW; void setup(){ Serial.begin(9600); pinMode(btn, INPUT_PULLUP); pinMode(ledPin, OUTPUT); } void loop () { if (digitalRead(btn) == LOW) delay(100); { ledValue = !ledValue; delay(100); digitalWrite(ledPin, ledValue); delay(100); Serial.println(digitalRead(ledPin)); } } When I hold the button I receive contiguous state change. I want to press button and receive single state change,

问题 As title gives it away I am trying to just send Long integer values from arduino and receiving it from my C# application. My Arduino code is void setup() { Serial.begin(9600); } long n; byte b[4]; void loop() { n=500; for (int i=0; i<10; i++) { n = n+20; IntegerToBytes(n, b); for (int i=0; i<4; ++i) { Serial.write((int)b[i]); } delay(1000); } } void IntegerToBytes(long val, byte b[4]) { b[3] = (byte )((val >> 24) & 0xff); b[2] = (byte )((val >> 16) & 0xff); b[1] = (byte )((val >> 8) & 0xff);

问题 Basically I want to pause the live plot that I have setup here: import serial import numpy as np from matplotlib import pyplot as plt ser = serial.Serial('/dev/tty.usbmodemfa131', 9600) #Setting up the animated plot plt.ion() # set plot to animated fig = plt.figure() ydata = [0] * 100 ax1=plt.axes() # make plot line, = plt.plot(ydata) plt.ylim([24,29]) #Starting data collection while True: rawData = ser.readline().rstrip() x = len(rawData) #print(floatData) if len(rawData) <= 6: try: data =

问题 Hi i have been trying to send data from my arduino to my ASP.Net website and have been successful until i try to send a timestamp as a variable in the GET request. I have think it has somthing to do with the forward slash that separates the values but when i send a diffrent symbol like a "-" i get the same result (no data saved) EDIT: sorry its not the forward slash! it is because asp.net expects: 01/01/01 01:01:01 and am sending 1/1/1 1:1:1. so i need to figure out how send it with the zero

问题 This is problem #2 from this previous question: Inheritance in Arduino Code Building off of Steven's answer, I do need the array that holds the pointers to persist outside of its scope, which is resulting in some weird behavior. This is my "Board" class I have so far, that contains multiple child elements: Board.h: #ifndef Board_h #define Board_h #include <StandardCplusplus.h> #include <serstream> #include <string> #include <vector> #include <iterator> #include "Arduino.h" #include "Marble.h"

问题 As part of a simple Automation project, I was trying to control some LEDs through serial port. I cannot make the following code working int pin =0; int state = 0; void setup() { Serial.begin(9600); // opens serial port, sets data rate to 9600 bps } void loop() { // send data only when you receive data: if (Serial.available() > 0) { // read the incoming byte: if(Serial.read() == 'S' && Serial.read() == 'S') { // Command to set the pin pin = Serial.read() - 65; state = Serial.read() - '0';

问题 I am connecting CC3000 to a node.js server using socket.io. I have used the following library to create a websocket https://github.com/chadstachowicz/socket_io_arduino_cc3000 In SocketIOClient.cpp, it creates a TCP connection, gets a session-id(sid). It disconnects and creates another TCP connection and uses the sid to upgrade the connection to websocket. For this the client(here CC3000) sends the following header information: client.print(F("GET /socket.io/1/websocket/")); client.print(sid);