He has solar panel body and battery organs, charging by light. When he gets full charged, his poisonous tail emits light.
Charging speed depends on power of light, brighter light charges it faster with reaction. He dies in dark.
#define v 18000
#define x 10000
#define z 8000
#define c 3830 // 261 Hz
#define d 3400 // 294 Hz
#define e 3038 // 329 Hz
#define f 2864 // 349 Hz
#define g 2550 // 392 Hz
#define a 2272 // 440 Hz
#define b 2028 // 493 Hz
#define C 1912 // 523 Hz
#define D 1680
#define E 1500
#define F 1350
#define G 1200
#define A 1050
#define B 912
// Define a special note, ‘R’, to represent a rest
#define R 0
// SETUP ============================================
// Set up speaker on a PWM pin (digital 9, 10 or 11)
int speakerOut = 9;
// Do we want debugging on serial out? 1 for yes, 0 for no
int DEBUG = 1;
int photocellPin = 0; // the cell and 10K pulldown are connected to a0
int photocellReading; // the analog reading from the sensor divider
int LEDpin = 11; // connect Red LED to pin 11 (PWM pin)
int LEDbrightness;
int growspeed;
int bN = 0;
int bNcount = 0;
int bNcount2 = 0;
void setup() {
pinMode(speakerOut, OUTPUT);
if (DEBUG) {
Serial.begin(9600); // Set serial out if we want debugging
}
}
// MELODY and TIMING =======================================
// melody[] is an array of notes, accompanied by beats[],
// which sets each note’s relative length (higher #, longer note)
int hellom[] = {c, c};
int beats[] = {16, 64};
int dyingm[] = { v, R, z, v };
int beats2[] = { 200, 8, 8, 32 };
int happym[] = { c, C, g, e, C, g, z, e, z, c, C, g, f, C, g, z, f, z, c, C, g, e, C, g, z, e, z, d, e, f, z, f, g, g, z, g, a, a, z, C, R};
int beats3[] = { 16, 16, 16, 16, 8, 8, 16, 16, 16, 16, 16, 16, 16, 8, 8, 16, 16, 16, 16, 16, 16, 16, 8, 8, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 16, 16};
int sadm[] = {z, x, z, z, x, x};
int beats4[] = {36, 36, 36, 36, 36, 200};
int yesm[] = {d, b, E};
int beats5[] = {8, 16, 32};
int nom[] = {B, B, B, B, B, B};
int beats6[] = {8, 8, 8, 8, 8, 8};
int MAX_COUNT = sizeof(hellom) / 2;
int MAX_COUNT2 = sizeof(dyingm) / 2;
int MAX_COUNT3 = sizeof(happym) / 2;
int MAX_COUNT4 = sizeof(sadm) / 2;
int MAX_COUNT5 = sizeof(yesm) / 2;
int MAX_COUNT6 = sizeof(nom) / 2;// Melody length, for looping.
// Set overall tempo
long tempo = 10000;
// Set length of pause between notes
int pause = 1000;
// Loop variable to increase Rest length
int rest_count = 100; //<-BLETCHEROUS HACK; See NOTES
// Initialize core variables
int tone1 = 0;
int beat = 0;
long duration = 0;
// PLAY tone1 ==============================================
// Pulse the speaker to play a tone1 for a particular duration
void playtone1() {
long elapsed_time = 0;
if (tone1 > 0) { // if this isn’t a Rest beat, while the tone1 has
// played less long than ‘duration’, pulse speaker HIGH and LOW
while (elapsed_time < duration) {
digitalWrite(speakerOut,HIGH);
delayMicroseconds(tone1 / 2);
// DOWN
digitalWrite(speakerOut, LOW);
delayMicroseconds(tone1 / 2);
// Keep track of how long we pulsed
elapsed_time += (tone1);
}
}
else { // Rest beat; loop times delay
for (int j = 0; j < rest_count; j++) { // See NOTE on rest_count
delayMicroseconds(duration);
}
}
}
// LET THE WILD RUMPUS BEGIN =============================
void loop() {
// play each sound in order, with a pause between each one.
photocellReading = analogRead(photocellPin);
Serial.print(“Analog reading = “);
Serial.println(photocellReading);
Serial.println( growspeed);
Serial.println(bNcount);
Serial.println(bNcount2);
LEDbrightness = 255;
growspeed = map(photocellReading,0, 1023, 10000, 2000);
if(photocellReading>300){
bNcount2 = 0;
bN = 0;
bNcount = bNcount +1;
if(bNcount == 4){
bN= 2;
}
if(bNcount == 5){
bN= 1 ;
bNcount = 0;
}
}
if(photocellReading<300){
bNcount = 0;
bN = 4;
bNcount2 = bNcount2 +1;
if(bNcount2 == 4){
bN= 6;
}
if(bNcount2 == 5){
bN= 5 ;
bNcount2 = 0;
}
}
switch (bN) {
case 0:
analogWrite(LEDpin, LOW);
hello();
break;
case 1:
analogWrite(LEDpin, LEDbrightness);
happy();
break;
case 2:
yes();
break;
case 3:
// game4();
break;
case 4:
analogWrite(LEDpin, LOW);
no();
break;
case 5:
analogWrite(LEDpin, LOW);
dying();
break;
case 6:
analogWrite(LEDpin, LOW);
sad();
break;
}
}
void hello() {
// Set up a counter to pull from melody[] and beats[]
for (int i=0; i<MAX_COUNT; i++) {
tone1 = hellom[i];
beat = beats[i];
duration = beat * tempo; // Set up timing
playtone1();
// A pause between notes…
delayMicroseconds(pause);
//noTone(speakerOut);
}
delay(growspeed);
}
void dying() {
// Set up a counter to pull from melody[] and beats[]
for (int i=0; i<MAX_COUNT2; i++) {
tone1 = dyingm[i];
beat = beats2[i];
duration = beat * tempo; // Set up timing
playtone1();
// A pause between notes…
delayMicroseconds(pause);
//noTone(speakerOut);
}
delay(10000);
}
void happy() {
// Set up a counter to pull from melody[] and beats[]
for (int i=0; i<MAX_COUNT3; i++) {
tone1 = happym[i];
beat = beats3[i];
duration = beat * tempo; // Set up timing
playtone1();
// A pause between notes…
delayMicroseconds(pause);
//noTone(speakerOut);
}
delay(8000);
}
void sad() {
// Set up a counter to pull from melody[] and beats[]
for (int i=0; i<MAX_COUNT4; i++) {
tone1 = sadm[i];
beat = beats4[i];
duration = beat * tempo; // Set up timing
playtone1();
// A pause between notes…
delayMicroseconds(pause);
//noTone(speakerOut);
}
delay(2000);
}
void yes() {
// Set up a counter to pull from melody[] and beats[]
for (int i=0; i<MAX_COUNT5; i++) {
tone1 = yesm[i];
beat = beats5[i];
duration = beat * tempo; // Set up timing
playtone1();
// A pause between notes…
delayMicroseconds(pause);
//noTone(speakerOut);
}
delay(growspeed);
}
void no() {
// Set up a counter to pull from melody[] and beats[]
for (int i=0; i<MAX_COUNT6; i++) {
tone1 = nom[i];
beat = beats6[i];
duration = beat * tempo; // Set up timing
playtone1();
// A pause between notes…
delayMicroseconds(pause);
//noTone(speakerOut);
}
delay(2000);
}
breegeek and 
scottpeterman are discussing. 
Yury Gitman is discussing. 
-There are space to install at seat tube and head
-LED idea and electric shocking idea could be made
-Chain can be the remote controller. Activate when bike get far from chain
-Pre-installation