No, the second method is to avoid (but even then not always) confusion about the name.
Using the module name has never failed for me.
1 Like
my module name BT04-A and works with sliders sketch
my module name BT04-A and works with sliders sketch even with terminal worked both send receive
So using this name as the device_name works with the code above?
i did not try your last code yet but it works with other sketch you gave me for the sliders
but sure i change the name of module from HC-05 to BT04-A inside the sketch
i well try this and back to you with the result
and great thanks for you
Don’t put spaces between the quotations!
1 Like
Which one? I’ve posted so many.
this works and control arduino
import ketai.net.bluetooth.*;
import controlP5.*;
import android.os.Bundle;
ControlP5 cP5a;
ControlP5 cP5b;
String device_name = "BT04-A";
//String device_mac = "40:45:DA:00:25:05";
KetaiBluetooth bt;
void setup() {
cP5a = new ControlP5(this);
cP5a.addSlider("CYCLE_TIME", 999, 1999,999, 10, 10, 255, 35);
cP5b = new ControlP5(this);
cP5b.addSlider("PULSE", 55, 455, 55, 10, 55, 255, 35);
bt.getPairedDeviceNames();
bt.start();
//bt.connectDevice("40:45:DA:00:25:05");
bt.connectToDeviceByName(device_name);
}
void draw() {
}
void controlEvent(ControlEvent theEvent) {
if (theEvent.isController()) {
print("control event from : "+theEvent.getController().getName());
println(", value : "+theEvent.getController().getValue());
if (theEvent.getController().getName()=="CYCLE_TIME") {
int val1 = int(theEvent.getController().getValue());
send("a" + val1+"\n");
}
if (theEvent.getController().getName()=="PULSE") {
int val2 = int(theEvent.getController().getValue());
send("b" + val2+"\n");
}
}
}
void send(String str) {
byte[] data = str.getBytes();
//bt.write(device_mac, data);
bt.writeToDeviceName(device_name, data);
//OscMessage m = new OscMessage(str);
//bt.broadcast(m.getBytes());
}
void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
bt = new KetaiBluetooth(this);
}
Really?
The integer val1 is converted to a string how?
send("b" + val1 +"\n");
void send(String str) {
byte[] data = str.getBytes();
bt.writeToDeviceName(device_name, data);
}
1 Like
this is the arduino code`
void bob() {
if (Serial.available() >= 2)
{
int value2;
char command = Serial.read();
switch (command)
{
case 'a': value2 = Serial.parseInt();
CYCLE_TIME = value2;
{
break;
case 'b': value2 = Serial.parseInt();
TX_PULSE = value2;
break;
}
hi
this sketch keeps stop
if i remove this lines it compile with blue screen but without action
import ketai.net.bluetooth.*;
import android.os.Bundle;
String device_name = "BT04-A";
String Str;
KetaiBluetooth bt;
void setup() {
fullScreen();
orientation(PORTRAIT);
bt.getPairedDeviceNames();
bt.connectToDeviceByName(device_name);
bt.start();
textSize(60); /// this line
textAlign(CENTER); //// this line
}
void draw() {
background(0, 0, 200);
text(Str, width/2, height/2);/// this line
}
void onBluetoothDataEvent(String who, byte[] data) {
Str = new String(data);
println(Str);
}
void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
bt = new KetaiBluetooth(this);
}
But did it println(); a string to the console?
1 Like
i just link the bluetooth module with out data still prepare the arduino
I don’t understand this.
1 Like
i am not sure if it println(); a string to the console i well try again and see
Nice!..
1 Like
this is simple arduino code reading from potentiometer
void setup() {
// initialize the serial communication:
Serial.begin(9600);
}
void loop() {
// send the value of analog input 0:
Serial.println(analogRead(A0));
// wait a bit for the analog-to-digital converter to stabilize after the last
// reading:
delay(2);
}
and this is the processing sketch its working with serial i need to send it with bluetooth how to do it ??
import processing.serial.*;
Serial myPort; // The serial port
int xPos = 1; // horizontal position of the graph
float inByte = 0;
void setup () {
// set the window size:
size(400, 300);
// List all the available serial ports
// if using Processing 2.1 or later, use Serial.printArray()
println(Serial.list());
// I know that the first port in the serial list on my Mac is always my
// Arduino, so I open Serial.list()[0].
// Open whatever port is the one you're using.
myPort = new Serial(this, Serial.list()[0], 9600);
// don't generate a serialEvent() unless you get a newline character:
myPort.bufferUntil('\n');
// set initial background:
background(0);
}
void draw () {
// draw the line:
stroke(127, 34, 255);
line(xPos, height, xPos, height - inByte);
// at the edge of the screen, go back to the beginning:
if (xPos >= width) {
xPos = 0;
background(0);
} else {
// increment the horizontal position:
xPos++;
}
}
void serialEvent (Serial myPort) {
// get the ASCII string:
String inString = myPort.readStringUntil('\n');
if (inString != null) {
// trim off any whitespace:
inString = trim(inString);
// convert to an int and map to the screen height:
inByte = float(inString);
println(inByte);
inByte = map(inByte, 0, 1023, 0, height);
}
}
i try many times but could not make it