| 1 | /* |
| 2 | * Arduino IR-Jammer |
| 3 | * <~~Harvie 2oo8 |
| 4 | * |
| 5 | * You can look for couple of old TV remote controlls |
| 6 | * to extract some IR LEDs... |
| 7 | * |
| 8 | * Each TV should have LED of specific "color" |
| 9 | * (even you can't see it). So its better to connect |
| 10 | * more LEDs with different light frequency (color). |
| 11 | * Specialy if jammer is working only from small distance. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #define ledpin 13 |
| 16 | //Maybe you will have to experiment also with this value |
| 17 | int bitlen = 5; |
| 18 | int d; |
| 19 | float i; |
| 20 | |
| 21 | void setup() { |
| 22 | pinMode(ledpin, OUTPUT); |
| 23 | } |
| 24 | |
| 25 | void loop() { |
| 26 | for(d=1000/100;d<=1000/20;d++) { // 1000/frequency in kHz |
| 27 | //You maybe have to experiment with ^^^ this ^^^ values |
| 28 | //Frequency sweeping: 100->20 kHz works, i saw 60->1 too |
| 29 | for(i=0;i<bitlen;i+=0.5) { |
| 30 | digitalWrite(ledpin, HIGH); delayMicroseconds(d/2); |
| 31 | digitalWrite(ledpin, LOW ); delayMicroseconds(d/2); |
| 32 | } |
| 33 | delayMicroseconds(d*bitlen); |
| 34 | } |
| 35 | } |
| 36 | |