When pressing the button, the LED will blink for about 45 seconds and the Piezzo speaker will make a tick for each blink. The light sensor control the speed of the blinking. The more light the faster, the less light the slower.
Timer 555, 2 LEDs Blinking Schematic: ===================================== 1. Pin1 to ground 2. Pin2(trigger) to pin6(Threshold) 3. Pin8(Vcc) to pin4(Reset) 4. Pin7(Discharge) to pin8(Vcc) using 4.7k Ohm resistor 5. Connect 47uF Capacitor negative pin to ground 6. Connect 47uF Capacitor positive pin to pin6 (threshold) 7. Connect 47uF Capacitor positive pin to pin7(Discharge) using 10k + 4.7k resistor or using LightSensor + 4.7k resistor 8. Connectpin3(Output) to Empty Row 8.1 2 red led: Empty row -> 1k Ohm Resistor -> -RED-LED1+ -> -RED-LED2+ -> Vcc 8.2 1 green led: Empty row -> 100 Ohm Resistor -> +GREEN-LED2 -> GREEN-LED2-> Ground 9. Connect Pin8(Vcc) to Power http://en.wikipedia.org/wiki/555_timer_IC Timer 555, Monostable Mode, one time timer ======================================================== var C = 470uF var Ra = 22k => 5.17 seconds 1. Connect power and ground to pins 8 and 1 of the 555 timer (red and black wires). 2. Connect a 0.01uF capacitor between pins 5 and 1. 3. Connect a 470uF capacitor between pins 1 and 6, make sure that the negative lead of the capacitor is connected to pin 1. 4. Connect pins 6 and 7 with a jumper wire (green). 5. Connect a 47K resistor between pins 7 and 8. 47K + 470uF = 25s of animation 6. Connect pins 4 and to Vcc 7. Connect LED+ to pin 3 and LED- to goun 8. Connect an LED and current limiting resistor in series from the output of the 555 to ground. 9. Connect Wire the momentary push button switch in series with a 10K resistor between Vcc and ground. Connect a wire (yellow) from the junction between the switch and resistor to the trigger pin 2