Hi all,
I'm most of the way through building a working replica of a BB8 Droid. The electronics and mechanics are all complete, and I'm into the coding. Unfortunately for me this is where I rapidly ran out of talent and experience.
My droid is running two Arduino's, a Mega with a USB host shield and Bluetooth Dongle (to connect to a PS3 controller), and an Uno with a geeetech MP3 shield for the sounds.
Using a sketch written for an RC car I have so far successfully paired the controller and Mega/USB shield combo, and have edited the sketch to control three servos which my droid uses to control the head. That all works perfectly.
I also (up until tonight) managed to edit in some code which turned button pushes from the controller, into serial printed numbers, which (because the TX/RX pins of my two arduinos are connected, was triggering sounds from the MP3 shield, which has a simple MP3 player sketch running on it which plays tracks 1-9 from an SD card when it receives the numbers 1-9 via serial data.
I actually had this all working with about 4 different buttons on the remote triggering different sounds, and was trying to expand my button pushes by adding more, but for whatever reason, it stopped working. By stopped working, I mean the remote will still turn the head as before, but the button pushes no longer trigger any sounds.
I know the MP3 shield is still working, because when the controller pairs with the USB dongle, there is a serial command which I added which switches the shield to Mono output ('M') increases the volume to maximum (19 consecutive '+' symbols), and then plays track 3 on the SD card. This all still works when the controller is paired.
Note that the serial data for the 'circle' button push also raises the volume, as I found that the shield appeared to 'reset' itself after being initialized. I wanted one (lesser used) sound to also raise the volume, and when I use the droid, I'll just play that one first to set the volume at max.
I suspect the reason is down to my syntax and my simplistic addition of lines without really knowing what I'm doing.
Can anyone please possibly help get my sounds working again?
/*
Barrett Anderies
March 11, 2013
This is a modified version of the PS3BT.ino example sketch by Kristian Lauszus
For more information visit his blog: http://blog.tkjelectronics.dk/ or
send him an e-mail: kristianl@tkjelectronics.com
*/
#include <PS3BT.h> //Include the necessary libraries.
#include <Servo.h>
#include <SPI.h>
USB Usb;
BTD Btd(&Usb);
PS3BT PS3(&Btd);
Servo servo1; //Create instances of type Servo. servo1 is the dome rotate servo or steer and servo2 and servo3 is the head tilt.
Servo servo2;
Servo servo3;
int offset = 0; // put this with the other global variables (above the void setup() function).
int steer = 127; // put this with the other global variables (above the void setup() function).
void setup() {
Serial.begin(115200);
if (Usb.Init() == -1) {
Serial.print(F("\r\nOSC did not start"));
while(1); //halt
}
Serial.print(F("\r\nM++++++++++++++++++3"));
pinMode(3, OUTPUT);
pinMode(5, OUTPUT);
pinMode(4, OUTPUT);
servo1.attach(5); //Dome rotate servo on digital pin 5
servo2.attach(3); //head tilt right side on digital pin 3
servo3.attach(4); //head tilt left side on digital pin 4
}
void loop()
{
Usb.Task();
if(PS3.PS3Connected || PS3.PS3NavigationConnected) {
steer = PS3.getAnalogHat(RightHatX); // read right joystick
if(PS3.getButtonClick(RIGHT)) { // trim right
offset += 1;
}
if(PS3.getButtonClick(LEFT)) { // trim left
offset -= 1;
}
steer = steer + offset; // incorporate trim into steer command
if(steer > 255) steer = 255; // enforce upper limit
if(steer < 0) steer = 0; // enforce lower limit
servo1.write(map(steer, 0, 255, 180, 0)); // write steer command
servo2.write(map(PS3.getAnalogHat(RightHatY), 0, 255, 0, 135)); // write throttle command
servo3.write(map(PS3.getAnalogHat(RightHatY), 0, 255, 180, 45));
}
else
{
servo1.write(90);
servo2.write(90);
servo3.write(90);
}
if(PS3.getButtonClick(PS)) {
PS3.disconnect();
}
else
if(PS3.getButtonClick(CIRCLE)) {
Serial.print(F("\r\nM+++++++++++++++++++8"));
if(PS3.getButtonClick(R1))
Serial.print(F("\r\n1"));
if(PS3.getButtonClick(R3))
Serial.print(F("\r\n2"));
if(PS3.getButtonClick(L1))
Serial.print(F("\r\n3"));
if(PS3.getButtonClick(UP))
Serial.print(F("\r\n4"));
if(PS3.getButtonClick(DOWN))
Serial.print(F("\r\n5"));
}
}
