diff --git a/firmware/apps/cockroach.c b/firmware/apps/cockroach.c
index 63c7641..053f516 100644
--- a/firmware/apps/cockroach.c
+++ b/firmware/apps/cockroach.c
@@ -8,6 +8,10 @@
 #include "../lib/music.h"
 #include "../lib/usart.h"
 
+inline uint16_t biased_random(uint16_t value) {
+	return value / 8 * (rand() & 7);
+}
+
 static void led_sound(void)
 {
 	static bool discharge;
@@ -26,6 +30,8 @@ static void led_sound(void)
 	}
 	if (timer_expired(&mytimer)) {
 		if (discharge) {
+			led_off(LED_R | LED_L);
+
 			DDRC |= (1 << PORTC0) | (1 << PORTC1);	//set LED Ports  to output:
 			/*discharge*/
 			PORTC = (PORTC & 0b11110000);
@@ -34,6 +40,8 @@ static void led_sound(void)
 			/*pull ups off*/
 			PORTC &= ~(1 << PORTC0);
 			discharge = false;
+
+			timer_set(&mytimer, 1);
 		} else {
 			/*single measurement*/
 			ADMUX = (ADMUX & ~(0x1F)) | 0; // select channel 0
@@ -41,11 +49,33 @@ static void led_sound(void)
 			while (ADCSRA & (1 << ADSC)) ; // wait for conversion to end
 			led1 = ADCW;                   // read result
 
-			set_motor(led1 > 0x50 ? MOTOR_ON : MOTOR_OFF);
+			DDRC |= (1 << PORTC0) | (1 << PORTC1);	//set LED Ports  to output:
+
+			set_motor(biased_random(led1) > 0x50 ? MOTOR_ON : MOTOR_OFF);
+
+			if(biased_random(led1) > 0x20) {
+				led_on(LED_R);
+			} else {
+				led_off(LED_R);
+			}
+
+			if(biased_random(led1) > 0x20) {
+				led_on(LED_L);
+			} else {
+				led_off(LED_L);
+			}
+
+			if(biased_random(led1) > 0x90) {
+				uint16_t tone = (biased_random(led1) * 2) + 500;
+				music_setNote(tone, 0);
+			} else {
+				music_setNote(NOTE_PAUSE, 0);
+			}
 
 			discharge = true;
+
+			timer_set(&mytimer, 20);
 		}
-		timer_set(&mytimer, 10);	//relaunch timer
 	}			//end if timer_expired
 }				//end mode5