Guys, I am using virtual wire for my project. I have connected the digital pins 11 and 12 (I read they are by default. So connected so crossly to 2 arduino nano's. I have loaded the virtual wire simple transmit & receive program to the nano's. But, I am not getting any response in the serial window of receiver nano. Can i directly connect the 12 & 11 pins crossly in the arduinos or do I have to use RF for sending ? Please someone reply as soon as possible. I cant continue the project as I am stuck here.
Hi, if you are just connecting them by wires at the moment, have you got the gnd of both arduino connected together?
A current return path will be required for direct connections.
Good to see you have started the project stage by stage, hope we can help.
Thanks guys.. it worked when i connected the grnds together.
But, i wish to do it wirelessly.
But, using virtual wire, I am getting (at random times) data at rxr nano only when i change the sensor positions. Else no data.
Also, I cant use virtual wire and servo header files together at reciever. Its generating error during compilation. So, I used software serial. Its also generating error..
My program is: (only partial. need to include servo write details)
#include <SoftwareServo.h>
//Connect the Receiver data pin to Arduino pin 11
#include <VirtualWire.h>
byte message[4]; // a buffer to hold the incoming messages
byte msgLength = 4; // the size of the message
byte accel_pitch;
byte accel_roll;
byte gyro_yaw;
byte gyro_pitch;
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
}
void loop()
{
if (vw_get_message(message, &msgLength)) // Non-blocking
{
for (int i = 0; i <msgLength; i++)
{
Serial.print(message*);* Serial.print("\t");
}* Serial.println();
}*
accel_pitch = message[0];*
accel_roll = message[1];*
gyro_yaw = message[2];*
gyro_pitch = message[3];*
} ---- On compiling: C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=105 -IC:\Program Files\Arduino\hardware\arduino\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\variants\eightanaloginputs -IF:\arduino libs\libraries\SoftwareServo -IF:\arduino libs\libraries\VirtualWire C:\Users\roy\AppData\Local\Temp\build8637042207630295898.tmp\sketch_jan06b.cpp -o C:\Users\roy\AppData\Local\Temp\build8637042207630295898.tmp\sketch_jan06b.cpp.o In file included from sketch_jan06b.ino:1: F:\arduino libs\libraries\SoftwareServo/SoftwareServo.h:4:22: warning: WProgram.h: No such file or directory C:\Program Files\Arduino\hardware\tools\avr\bin\avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=105 -IC:\Program Files\Arduino\hardware\arduino\cores\arduino -IC:\Program Files\Arduino\hardware\arduino\variants\eightanaloginputs -IF:\arduino libs\libraries\SoftwareServo -IF:\arduino libs\libraries\VirtualWire -IF:\arduino libs\libraries\SoftwareServo\utility F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp -o C:\Users\roy\AppData\Local\Temp\build8637042207630295898.tmp\SoftwareServo\SoftwareServo.cpp.o In file included from F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp:1: F:\arduino libs\libraries\SoftwareServo/SoftwareServo.h:4:22: warning: WProgram.h: No such file or directory F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp: In member function 'uint8_t SoftwareServo::attach(int)': F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp:27: error: 'digitalWrite' was not declared in this scope F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp:28: error: 'OUTPUT' was not declared in this scope F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp:28: error: 'pinMode' was not declared in this scope F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp: In member function 'void SoftwareServo::write(int)': F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp:51: error: 'clockCyclesPerMicrosecond' was not declared in this scope F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp: In static member function 'static void SoftwareServo::refresh()': F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp:73: error: 'millis' was not declared in this scope F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp:106: error: 'digitalWrite' was not declared in this scope F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp:108: error: 'TCNT0' was not declared in this scope F:\arduino libs\libraries\SoftwareServo\SoftwareServo.cpp:123: error: 'digitalWrite' was not declared in this scope
One of your error messages refers to WProgram.h not being defined. What you need to do is change the virtual wire library.
You a text editor like notepad or word, and change #include to #include <Arduino.h>.
Most of that looks like the libraries are not in the right place.
Then, I would make the code more like the example:
// receiver.pde
//
// Simple example of how to use VirtualWire to receive messages
// Implements a simplex (one-way) receiver with an Rx-B1 module
//
// See VirtualWire.h for detailed API docs
// Author: Mike McCauley (mikem@airspayce.com)
// Copyright (C) 2008 Mike McCauley
// $Id: receiver.pde,v 1.3 2009/03/30 00:07:24 mikem Exp $
#include <VirtualWire.h>
void setup(){
Serial.begin(9600);
// Debugging only
Serial.println("setup");
// Initialise the IO and ISR
vw_set_ptt_inverted(true); // Required for DR3100 - delete if your Tx has no PTT input
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver PLL running
}
void loop(){
uint8_t buf[VW_MAX_MESSAGE_LEN]; // <<<<<<<< this is different
uint8_t buflen = VW_MAX_MESSAGE_LEN; // <<<<<< this s different
if (vw_get_message(buf, &buflen)) // Non-blocking
{
int i;
digitalWrite(13, true); // Flash a light to show received good message
// Message with a good checksum received, dump it.
Serial.print("Got: ");
for (i = 0; i < buflen; i++)
{
Serial.print(buf[i], HEX);
Serial.print(" ");
}
Serial.println("");
digitalWrite(13, false);
}
}
