Sorry for the miscommunication, this is also to learn. Ofcourse i wouldnt build a model elevator without paying attention instead of following orders blindly!Wow school must have changed since I was there...
I always thought you impress teachers with the work YOU can do.. not how well you can get someone on the internet to do the work for you. Maybe you should pick a project you can actually do on your own. Show YOUR skills and things YOU can do.
If you teacher asks you a question I don't think you can say.."hold on let me go email Tom"
This is a little bit complicated for me, we just started with wires a day or two back. But as i finish my goals on this project, i will try to advance into those sectionsStart by describing exactly what the elevator must do. There's a lot more than you think. What are the actual states that it can be in?
Then think about what you need to do all of this. This list doesn't include everything, and you don't need all of this to start.
- Buttons - up/down on each floor, floor select in the car, door open/close? Safety switch so the door doesn't close on anyone? Alarm? Fire recall?
- Indicator lights - floor number above the door? Up/down arrows? Illuminated buttons so you know they were pressed?
- Limit switches so the electronics know when the door is fully open, fully closed, when the elevator is level at each floor
- Motors - you will need two (door and lifting). How do you reverse them?
- A timer to keep the doors open for a certain amount of time?
Now that you know all of the inputs and outputs, you can come up with a state machine for how the elevator should respond to each of those inputs at each stage of its operation. At this point, you can decide if you want to use a microprocessor to control this, discrete logic, relay logic, or some other means.
Of course, there's also the mechanical side.
/mike