| 1 | //TOUCH SENSING BETA - LED TURNS ON WHEN LIGHT IS PRESENT |
| 2 | //BY: RICARDO DE LEMOS 1/17/2007 |
| 3 | int led1 = 13; |
| 4 | int cath = 2; // negative |
| 5 | int ando = 3; // positive |
| 6 | |
| 7 | void setup() |
| 8 | { |
| 9 | pinMode(led1, OUTPUT); |
| 10 | pinMode(cath, OUTPUT); |
| 11 | pinMode(ando, OUTPUT); |
| 12 | //Serial.begin(9600); |
| 13 | } |
| 14 | |
| 15 | int dela = 20; |
| 16 | int last = HIGH; |
| 17 | int shine = HIGH; |
| 18 | |
| 19 | void loop() |
| 20 | { |
| 21 | //TURN SENSOR LED ON |
| 22 | pinMode(ando, OUTPUT); |
| 23 | if(shine) { |
| 24 | digitalWrite(cath, LOW); |
| 25 | digitalWrite(ando, HIGH); |
| 26 | delay(100); |
| 27 | } |
| 28 | |
| 29 | //REVERSE BIAS + CHARGE LED |
| 30 | digitalWrite(cath, HIGH); |
| 31 | digitalWrite(ando, LOW); |
| 32 | //delay(dela); |
| 33 | |
| 34 | //READ LED CAP |
| 35 | pinMode(ando, INPUT); |
| 36 | delay(dela); |
| 37 | int state = digitalRead(ando); |
| 38 | |
| 39 | //SWITCH |
| 40 | if((state != last) && state == LOW) shine = !shine; |
| 41 | last = state; |
| 42 | |
| 43 | //DEBUG LED |
| 44 | if(state) { |
| 45 | digitalWrite(led1,HIGH); |
| 46 | } else { |
| 47 | digitalWrite(led1,LOW); |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | |