Title Page
Paper
The four bubbles represent the four states the toll booth will go through. State 0 is the closed state. When an open switch is pressed, the toll booth will go into state 1, the motor open state. The motor will rotate until the arm hits the open limit switch, which brings the toll booth to state 2, the gate open state. At state 2, when the close switch is pressed, the booth will go into state 3, and the motor will be activated, closing the gate, until the close limit switch is hit, bringing the gate back to state 0.
MultiSim
VEX
Conclusion
A state machine is a machine that uses states to go through it's motions by switches and limits. For example if a machine has 4 states it will change states when either a switches is hit or a limit is reached. Some examples of state machines are toll booths, turnstiles, traffic lights, vending machines, etc. This project was much different than any other project we have done because it required us to understand the project completely or it would not work. Not only did we need to create the circuit on multisim but we also needed to create the working circuit and the working toll booth to connect to the circuit. Some similarities were using multisim and breadboards like we always do. Unlike the other projects we had a wiring diagram to base our circuit off of. It was very confusing and our group made many many many mistakes trying to make the exact same circuit. After many attempts trying to make the circuit we finally got it to work and we finally understood how everything worked. When you hit the open switch in state 0, the motor activates and will move the metal arm up(state 1). The arm then hits the open limit switch, and the arm will stop(state 2). Once the arm stops, the closing switch needs to be activated. When the switch is hit, the motor turns on and brings the arm down(state 3) until it activates the close limit switch(state 4).