Hi,
Thanks for the feedback and I apologize for the confusion on my part, please ignore my first comment.
Basically, I will like to control two servo motors with a Wii Nunchuck controller, and I have a few questions regarding it:
-
Two sets of data will be sent constantly from the Wii Nunchuck Side to the Servo Motor Side, let's call them x & y respectively. The x & y values are sent in without delay so they are in pretty large quantity. On the servo side, I only know how to display ALL the data that are being received. However, what I want to know is how to assign value x to Servo1 and value y to Servo2, before commanding the servos to execute the assigned values.
-
While attempting to control one servo via the method mentioned above, the servo was just swinging back and forth randomly despite that the x values are being received on the servo side and executed properly. Hence I am not sure if the idea of using Bluetooth + SoftwareSerial along with Servo works and will like to clarify if the idea is viable as I have read somewhere that The SoftwareSerial and Servo libraries conflict with each other.
Wii Nunchuck Side Connections (Transmitter)
HC-12 > Arduino Nano
VCC > 5V
GND > GND
TX > D10
RX > D11
Wii Nunchuk Adapter > Arduino Nano
- (VCC) > VCC
d > A4
c > A5
Servo Motor Side (Receiver)
Servo 1 & 2 > Arduino Nano
VCC > VCC
GND > GND
Servo1 output > D9
Servo2 output > D10
**HC-12 > Arduino Nano **
VCC > 5V
GND > GND
TX > D2
RX > D3
Wii Nunchuck Side Code[/b]
```
**[u]#include <Wire.h>
#include <SoftwareSerial.h>
SoftwareSerial Wireless_Serial (10,11); //Rx | Tx
static uint8_t nunchuck_buf[6]; // array to store nunchuck data,
void setup()
{
Serial.begin(9600);
Wireless_Serial.begin(9600);
nunchuck_setpowerpins(); // use analog pins 2&3 as fake gnd & pwr
nunchuck_init(); // send the initilization handshake
Serial.print ("Finished setup\n");
}
void loop()
{
nunchuck_get_data();
// map nunchuk data to a servo data point
int x_axis = map(nunchuck_buf[0], 23, 222, 180, 0);
int y_axis = map(nunchuck_buf[1], 32, 231, 0, 180);
//move servo to desired position based on Wii nunchuk reading
Wireless_Serial.print(x_axis);
//Wireless_Serial.print(y_axis);
// un-comment next line to print data to serial monitor
// nunchuck_print_data();
if (Serial.available())
{
Wireless_Serial.write(Serial.read());
}
}
//
// Nunchuck functions
//
// Uses port C (analog in) pins as power & ground for Nunchuck
static void nunchuck_setpowerpins()
{
#define pwrpin PORTC3
#define gndpin PORTC2
DDRC |= _BV(pwrpin) | _BV(gndpin);
PORTC &=~ _BV(gndpin);
PORTC |= _BV(pwrpin);
delay(100); // wait for things to stabilize
}
// initialize the I2C system, join the I2C bus,
// and tell the nunchuck we're talking to it
void nunchuck_init()
{
Wire.begin(); // join i2c bus as master
Wire.beginTransmission(0x52); // transmit to device 0x52
Wire.write(0x40); // sends memory address
Wire.write(0x00); // sends sent a zero.
Wire.endTransmission(); // stop transmitting
}
// Send a request for data to the nunchuck
// was "send_zero()"
void nunchuck_send_request()
{
Wire.beginTransmission(0x52); // transmit to device 0x52
Wire.write(0x00); // sends one byte
Wire.endTransmission(); // stop transmitting
}
// Receive data back from the nunchuck,
int nunchuck_get_data()
{
int cnt=0;
Wire.requestFrom (0x52, 6); // request data from nunchuck
while (Wire.available ()) {
// receive byte as an integer
nunchuck_buf[cnt] = nunchuk_decode_byte(Wire.read());
cnt++;
}
nunchuck_send_request(); // send request for next data payload
// If we recieved the 6 bytes, then go print them
if (cnt >= 5) {
return 1; // success
}
return 0; //failure
}
// Print the input data we have recieved
// accel data is 10 bits long
// so we read 8 bits, then we have to add
// on the last 2 bits. That is why I
// multiply them by 2 * 2
void nunchuck_print_data()
{
static int i=0;
int joy_x_axis = nunchuck_buf[0];
int joy_y_axis = nunchuck_buf[1];
int accel_x_axis = nunchuck_buf[2]; // * 2 * 2;
int accel_y_axis = nunchuck_buf[3]; // * 2 * 2;
int accel_z_axis = nunchuck_buf[4]; // * 2 * 2;
int z_button = 0;
int c_button = 0;
// byte nunchuck_buf[5] contains bits for z and c buttons
// it also contains the least significant bits for the accelerometer data
// so we have to check each bit of byte outbuf[5]
if ((nunchuck_buf[5] >> 0) & 1)
z_button = 1;
if ((nunchuck_buf[5] >> 1) & 1)
c_button = 1;
if ((nunchuck_buf[5] >> 2) & 1)
accel_x_axis += 2;
if ((nunchuck_buf[5] >> 3) & 1)
accel_x_axis += 1;
if ((nunchuck_buf[5] >> 4) & 1)
accel_y_axis += 2;
if ((nunchuck_buf[5] >> 5) & 1)
accel_y_axis += 1;
if ((nunchuck_buf[5] >> 6) & 1)
accel_z_axis += 2;
if ((nunchuck_buf[5] >> 7) & 1)
accel_z_axis += 1;
Serial.print(i,DEC);
Serial.print("\t");
Serial.print("joy:");
Serial.print(joy_x_axis,DEC);
Serial.print(",");
Serial.print(joy_y_axis, DEC);
Serial.print(" \t");
Serial.print("acc:");
Serial.print(accel_x_axis, DEC);
Serial.print(",");
Serial.print(accel_y_axis, DEC);
Serial.print(",");
Serial.print(accel_z_axis, DEC);
Serial.print("\t");
Serial.print("but:");
Serial.print(z_button, DEC);
Serial.print(",");
Serial.print(c_button, DEC);
Serial.print("\r\n"); // newline
i++;
}
// Encode data to format that most wiimote drivers except
// only needed if you use one of the regular wiimote drivers
char nunchuk_decode_byte (char x)
{
x = (x ^ 0x17) + 0x17;
return x;
}[/u]**
[/u]** __[u]**[u]Servo Side Code[/b][/u]**[/u]__ __[u]**[u][/u]__
[u]**[u]//#include <Wire.h>
#include <Servo.h>
#include <SoftwareSerial.h>
Servo servoLeft; // Define left servo
//Servo servoRight; // Define right servo
SoftwareSerial Wireless_Serial (2,3); //Rx | Tx
//static uint8_t nunchuck_buf[6]; // array to store nunchuck data,
void setup()
{
Serial.begin(9600);
Wireless_Serial.begin(9600);
servoLeft.attach(10); // Set left servo to digital pin 10
//servoRight.attach(9); // Set right servo to digital pin 9
}
void loop()
{
if (Wireless_Serial.available())
{
Serial.write(Wireless_Serial.read());
int values = Wireless_Serial.read();
servoLeft.write(values);
}
}[/u][/u]
__[u]```**[/u]__
