1. The problem statement, all variables and given/known data The assignment for me is to simulate a circuit. I've already selected a project and I have already gathered parts thanks to my parents, but I need help on simulating the circuit. My first attempt did not go so well. The final steps of the project is to build the project on a breadboard, which I can do with my dad, and build it on a perf board, which I can do with my dad as well. Here's the app I am using to simulate the circuit: http://www.falstad.com/circuit/ Here's the circuit I'm supposed to simulate: Information about the circuit The Circuit 2. Relevant equations I just need to build the circuit, there really is no relevant equations as this is a project for assembling a circuit, not some help on homework or studying for a test. 3. The attempt at a solution Here's my first attempt at doing the circuit: http://l.bitcasa.com/C4FVbXxJ [Broken] It did not work out so well because it did not become animated, like it was supposed to have simulated electricity flowing through it. May you please help me on my second attempt to simulate the circuit. I believe the root of my problem is not understanding where what specific wires were supposed to go inside the IC1 555 Timer. I need to simulate the circuit by the end of this weekend.