Help please?

Projects General Guidance
1

Hi i am building a laserharpjr, i am searching for some working sketch and i cannot find it anywhere i followed radioshacks design, built my own frame etc etc, now i need working code for my chip to work i am still refreshing my brain back to the old c++ so it's a bit tough for me, much easier to reverse engineer if you know what i mean, simply for learning purposes as i could never claim the laserharpjr as my own it is already claimed, this is all for learning purposes that is all, any help anyone to working sketch and a step by step path to putting it on the brain? 3/uno

2

Do you have a schematic? Hard to suggest code for an invisible project.

3

#include <Tone.h>

const boolean DEBUG = false;

const int CALIBRATION_PIN = A5;
const int SPEAKER_PIN = 8;
const int SENSOR_COUNT = 3;

typedef struct
{
int pin;
int note;
} sensor_type;

sensor_type sensor[SENSOR_COUNT];

Tone notePlayer;

void setup(void)
{
if (DEBUG) {
Serial.begin(9600);
}
sensor[0].pin = A0; // analog input 0, etc...
sensor[0].note = NOTE_G3;
sensor[1].pin = A1;
sensor[1].note = NOTE_D4;
sensor[2].pin = A2;
sensor[2].note = NOTE_A4;

notePlayer.begin(SPEAKER_PIN);
}

void loop(void)
{
int calibration = analogRead(CALIBRATION_PIN);
if (DEBUG) {
Serial.print("cal: ");
Serial.print(calibration);
}
int activeSensor = -1;
for (int p = 0 ; p < SENSOR_COUNT ; p++) {
int sensor_value = analogRead(sensor[p].pin);
if (DEBUG) {
Serial.print("\tsensor ");
Serial.print(p);
Serial.print(": ");
Serial.print(sensor_value);
}
if ( sensor_value < calibration ) {
activeSensor = p;
if (DEBUG) Serial.print("!"); // "!" indicates note being played
}
}
if (DEBUG) Serial.println();
if (activeSensor == -1) {
notePlayer.stop();
} else {
notePlayer.play(sensor[activeSensor].note);
}
if (DEBUG) delay(1000);
}

Found it on the forums but im stuck still

4

You've defined DEBUG as a const. Don't you want it to change to true sometimes?
Nowhere have you changed it to true, so none of your if(DEBUG) statements will ever run.

5

http://www.radioshack.com/graphics/uc/rsk/Support/ProductManuals/Laser_Harp_Online_Instructions.pdf

6

you have to spell it out for me... my brain works slow, but accurate

7

Relevant link:
http://forum.arduino.cc/index.php/topic,198662.0.html

Seems there are a number of steps the Radio Shack PDF glosses over.

8

ok ill follow that route till i hit another dead end, thanks brolaf i will stay in touch :slight_smile:

9

Awsome it came out in white text no errors your the man! im getting the hang of it its all comin back to me now :smiley: