Mind Over Melon - Revision history

Ccprek: /* Headset */

2012-08-31T00:26:43Z

Headset

← Older revision		Revision as of 20:26, 30 August 2012
Line 12:		Line 12:

	Brain library [https://github.com/kitschpatrol/Arduino-Brain-Library here].		Brain library [https://github.com/kitschpatrol/Arduino-Brain-Library here].

	SoftSerial library [http://arduiniana.org/libraries/NewSoftSerial/ here].		SoftSerial library [http://arduiniana.org/libraries/NewSoftSerial/ here].

Ccprek: /* Headset */

2012-08-31T00:26:32Z

Headset

← Older revision		Revision as of 20:26, 30 August 2012
Line 10:		Line 10:

	The Force Trainer headset was hacked using instructions from http://frontiernerds.com/brain-hack. An [http://arduino.cc/en/Main/ArduinoBoardFio Arduino Fio] ties into the headset through a SoftSerial connection. It reads only the attention level and relays the value over the Xbee back to the base station.		The Force Trainer headset was hacked using instructions from http://frontiernerds.com/brain-hack. An [http://arduino.cc/en/Main/ArduinoBoardFio Arduino Fio] ties into the headset through a SoftSerial connection. It reads only the attention level and relays the value over the Xbee back to the base station.

			Brain library [https://github.com/kitschpatrol/Arduino-Brain-Library here].
			SoftSerial library [http://arduiniana.org/libraries/NewSoftSerial/ here].

	<pre>		<pre>

Ccprek: /* Headset */

2012-08-31T00:24:56Z

Headset

← Older revision		Revision as of 20:24, 30 August 2012
Line 9:		Line 9:
	== Headset ==		== Headset ==

	The Force Trainer headset was hacked using instructions from http://frontiernerds.com/brain-hack. An [http://arduino.cc/en/Main/ArduinoBoardFio \| Arduino Fio] ties into the headset through a SoftSerial connection. It reads only the attention level and relays the value over the Xbee back to the base station.		The Force Trainer headset was hacked using instructions from http://frontiernerds.com/brain-hack. An [http://arduino.cc/en/Main/ArduinoBoardFio Arduino Fio] ties into the headset through a SoftSerial connection. It reads only the attention level and relays the value over the Xbee back to the base station.

	<pre>		<pre>

Ccprek: /* Headset */

2012-08-31T00:24:44Z

Headset

← Older revision		Revision as of 20:24, 30 August 2012
Line 9:		Line 9:
	== Headset ==		== Headset ==

	The Force Trainer headset was hacked using instructions from http://frontiernerds.com/brain-hack. An [http://arduino.cc/en/Main/ArduinoBoardFio\|Arduino Fio] ties into the headset through a SoftSerial connection. It reads only the attention level and relays the value over the Xbee back to the base station.		The Force Trainer headset was hacked using instructions from http://frontiernerds.com/brain-hack. An [http://arduino.cc/en/Main/ArduinoBoardFio \| Arduino Fio] ties into the headset through a SoftSerial connection. It reads only the attention level and relays the value over the Xbee back to the base station.

	<pre>		<pre>

Ccprek: /* Headset */

2012-08-31T00:24:30Z

Headset

← Older revision		Revision as of 20:24, 30 August 2012
Line 8:		Line 8:

	== Headset ==		== Headset ==

			The Force Trainer headset was hacked using instructions from http://frontiernerds.com/brain-hack. An [http://arduino.cc/en/Main/ArduinoBoardFio\|Arduino Fio] ties into the headset through a SoftSerial connection. It reads only the attention level and relays the value over the Xbee back to the base station.

	<pre>		<pre>

Ccprek at 00:16, 31 August 2012

2012-08-31T00:16:12Z

@@ Line 9: / Line 9: @@
 == Headset ==
-Chris, fill this in.
+<pre>
 == Base Station ==

Bluyster: Created page with "Mind Over Melon is a LVL1 project made by Chris and Brad. It's purpose is simple: Destroy watermelons with your mind. It uses a Star Wars Force Trainer toy attached to an Ardui..."

2012-08-30T23:09:13Z

Created page with "Mind Over Melon is a LVL1 project made by Chris and Brad. It's purpose is simple: Destroy watermelons with your mind. It uses a Star Wars Force Trainer toy attached to an Ardui..."

New page

Mind Over Melon is a LVL1 project made by Chris and Brad. It's purpose is simple: Destroy watermelons with your mind. It uses a Star Wars Force Trainer toy attached to an Arduino FIO with Xbee, paired to another Arduino + Xbee, attached to a 200psi Solenoid Valve. The solenoid valve dumps CO2 into the melon when brain activity reaches a certain threshold.

== Hardware ==

The melon fits over a 3/4" copper pipe full of holes. The pipe is fitted to 1/2" tubing, which connects to a solenoid valve. The solenoid valve is directly connected to a CO2 tank, regulated to 200 PSI.

We used this solenoid valve: http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=300615692386&ssPageName=ADME:L:OU:US:1123#ht_2096wt_872

== Headset ==

Chris, fill this in.

== Base Station ==

The base station consists of an Xbee, 10 LEDs, a relay, and a potentiometer. The relay triggers the solenoid when needed, as the solenoid draws 3A@12v.

The 10 LEDs are attached to D2 - D11 on the Arduino, and are used as an LED bar graph. The relay to fire the melon is on pin D12. The potentiometer acts as a difficulty setting, and is attached to A0. The headset delivers output values ranging from 0-100, so the difficulty knob adjusts the threshold from 0-100 in increments of 10.

Once the threshold is exceeded, the valve is held open for 1 second, then there is a cooldown period of 5 seconds, to allow us to remove the user's headset, so they don't set the machine off again.

The code is below:

<pre>

void lineGauge(int value);
void lineDDR();
void configureDifficulty();
void explode();

enum state { CONFIG, EXPLODE, DISABLE };

int previousDifficulty;
state melonState;

int brainDifficulty;

int difficultyTimeout;
#define TIMEOUTRESET 2500
#define DISABLEPERIOD 10000

// the setup routine runs once when you press reset:
void setup() {
// initialize the digital pin as an output.
pinMode(led, OUTPUT);
pinMode(12, OUTPUT);
lineDDR();
Serial.begin(9600);
previousDifficulty = analogRead(A0);
lineGauge(0);
}

// the loop routine runs over aand over again forever:
void loop() {
if(analogRead(A0) >= previousDifficulty + 10 || analogRead(A0) <= previousDifficulty - 10)
{
previousDifficulty = analogRead(A0);
melonState = CONFIG;
difficultyTimeout = TIMEOUTRESET;
}

switch(melonState)
{
case CONFIG:
configureDifficulty();
break;
case EXPLODE:
explode();
break;
case DISABLE:
delay(DISABLEPERIOD);
lineGauge(0);
melonState = EXPLODE;
while (Serial.read() >= 0);
break;
}
}

int lineOutput(int input)
{
int difficultyScale = map(input, 0, 100, 0, 255);
int test = map(min((difficultyScale * 10) / brainDifficulty, 255), 0, 255, 1, 10);
return test;
}

void configureDifficulty()
{
int out = map(analogRead(A0), 0, 1023, 0, 9);
lineGauge(1 << out);
difficultyTimeout--;
delay(1);
if(difficultyTimeout <= 0)
{
melonState = EXPLODE;
brainDifficulty = map(analogRead(A0), 0, 1023, 1, 10);
}

}

void explode()
{
int incomingByte;
if (Serial.available() > 0) {
// read the incoming byte:
incomingByte = Serial.read();
Serial.println((int)incomingByte);
int outfactor = lineOutput((int)incomingByte);
lineGauge(pow(2, outfactor));
if(outfactor == 10)
{
digitalWrite(12, HIGH);
delay(1000);
digitalWrite(12, LOW);
melonState = DISABLE;
}
}

}

void lineDDR()
{
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
pinMode(6, OUTPUT);
pinMode(7, OUTPUT);
pinMode(8, OUTPUT);
pinMode(9, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
}

void lineGauge(int value)
{
unsigned int extraValue = ~value;
byte toPortD = (extraValue & 0b00111111) << 2;
byte toPortB = (extraValue & 0b1111000000) >> 6;
PORTD = toPortD;
PORTB = toPortB;

}
</pre>