1. The problem statement, all variables and given/known data I have to construct a circuit for my Physics class. The circuit must be tripped by a CDS Cell (Detects changes in light) and, once being 'tripped' it must play a continuous sound and make an LED flash on and off. [Broken] This picture is of the circuit board we are allowed to use, and of the 'Burglar alarm' found in the instruction book. The alarm is connected to terminals here, and is tripped by one of the wires being pulled out. I already re-configured it to be connected to the CDS cell, and now when I pass my hand in front of the CDS cell it activates the speaker. However once I move my hand from the CDS cell range, the sound stops. I need it to continuosly loop until the circuit is turned off. I also need a flashing L.E.D attached. 2. The attempt at a solution I understand that I will need to use the Integrated Dual Flip-Flop circuit, because it's a timer and allows me to loop the sound and turn the L.E.D on and off. However I am unsure of how to connect it. I've done some research but none of the things I've read deal with a dual flip-flop. I'm just unsure of how to connect the Flip-flop circuit so it loops sound. Thank you so much for any help!