Hi, I'm running a version of SpikenzieLab's DrumKitAI Sketch on an Arduino Duemilanove w/ATmega 328. The drum kit sketch is meant to be used with multiple piezo sensors that are mounted on separate pads/drums. However, for my project I am mounting all of my piezo sensors on a single piece of thin wood. I need to the sketch to only register one hit at a time so that there wont be any crosstalk between sensors. I was hoping someone could describe/show me how to change the sketch to only read the sensor with the highest vibration for each hit. Here is the code I am using:
// BY: MARK DEMERS Copywrite 2009
// April. 2009
// VERSION: 1.b
//
// DESCRIPTION:
// Arduino analog input used to sense piezo drum hits then sent serialy to processing.
//*******************************************************************************************************************
// User settable variables
//*******************************************************************************************************************
unsigned char PadNote[6] = {40,36,50,63,40,65}; // MIDI notes from 0 to 127 (Mid C = 60)
int PadCutOff[6] = {580,700,280,600,600,600}; // Minimum Analog value to cause a drum hit
int MaxPlayTime[6] = {90,120,70,90,90,90}; // Cycles before a 2nd hit is allowed
#define midichannel 0; // MIDI channel from 0 to 15 (+1 in "real world")
boolean VelocityFlag = true; // Velocity ON (true) or OFF (false)
//*******************************************************************************************************************
// Internal Use Variables
//*******************************************************************************************************************
boolean activePad[6] = {0,0,0,0,0,0}; // Array of flags of pad currently playing
int PinPlayTime[6] = {0,0,0,0,0,0}; // Counter since pad started to play
unsigned char status;
int pin = 0;
int hitavg = 0;
//*******************************************************************************************************************
// Setup
//*******************************************************************************************************************
void setup()
{
Serial.begin(57600); // connect to the serial port 115200
}
//*******************************************************************************************************************
// Main Program
//*******************************************************************************************************************
void loop()
{
for(int pin=0; pin < 6; pin++)
{
hitavg = analogRead(pin); // read the input pin
if((hitavg > PadCutOff[pin]))
{
if((activePad[pin] == false))
{
if(VelocityFlag == true)
{
// hitavg = 127 / ((1023 - PadCutOff[pin]) / (hitavg - PadCutOff[pin])); // With full range (Too sensitive ?)
hitavg = (hitavg / 8) -1 ; // Upper range
}
else
{
hitavg = 127;
}
MIDI_TX(144,PadNote[pin],hitavg);
PinPlayTime[pin] = 0;
activePad[pin] = true;
}
else
{
PinPlayTime[pin] = PinPlayTime[pin] + 1;
}
}
else if((activePad[pin] == true))
{
PinPlayTime[pin] = PinPlayTime[pin] + 1;
if(PinPlayTime[pin] > MaxPlayTime[pin])
{
activePad[pin] = false;
MIDI_TX(128,PadNote[pin],127);
}
}
}
}
//*******************************************************************************************************************
// Transmit MIDI Message
//*******************************************************************************************************************
void MIDI_TX(unsigned char MESSAGE, unsigned char PITCH, unsigned char VELOCITY)
{
status = MESSAGE + midichannel;
Serial.write(status);
Serial.write(PITCH);
Serial.write(VELOCITY);
}
[/size][/size][/size][/font]
/code]
Thank you for any help/suggestions![size=10pt][size=10pt][font=Verdana][size=10pt][/size][/font][/size][/size]