Last minute rush for CA1… cos it was only on Tuesday that my team members said they got their hands on some ‘useful’ previous reports (note: this action was delayed by 2 weeks) that we should emulate.
So, major change of plans.
But at least we had a very clear direction then.
So today, I still reached school after 11am I quickly do up a few circuits.
The thing is, the only thing I got from the previous report was the name of the model of the chip to drive the motor. I had to trial and error the values of resistors and diodes I had to put in, figure out what the difference between Vs and Vss is, etc.
Spent 2.5 hours figuring out the exact circuit configuration for:
1) Push button switch (actually was done in previous labs, but I dismantled it, so had to get it back again)
2) Infra-red sensor circuit
3) Motor circuit
Then, I spent 5 minutes laughing to myself, and proceeded to figure out the pressure-sensitive switch (bought it, but didn’t know what the 3 pins meant).
Then, duplicated the motor circuit 4 times, cos I had 4 motors to drive.
Then, draw components for homework, duplicating:
1) 3 IR circuits
2) 6 pressure sensitive switches
and try to write the code for the system.
ya… so much for the previous report, I still have to write the code myself. But well, thank goodness I expected it and did some research by myself beforehand.
Whatever.
oh… Where’s the spooky part? Well, while I was drawing components, the guy dispensing the components looked at me and said, ‘Zhanrong right?’
I was like, ‘…’
Actually, yesterday, when I personally drew components for the 1st time, I was already amazed that he took one look at me and proceeded to draw out the component draw-out sheet for each individual group. eh… There were 39 groups leh…
Then, my group mates said the guy also remembered their names.
I was like: wow!
Spooky~
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Day 2 after the previous part.
I finished all the circuit connections I wanted to present for CA1; one more involving the RFID still not possible; may pang seh it for CA1.
Just finished coding for the circuit, though I couldn’t confirm if they were well, cos the compiler could not function properly… lol Had to wait till tomorrow morning to know.
Anyways, here are the circuits I patched up.
The loose wires will connect the microcontroller in the middle. I was in charge of all the moving parts, like sliding doors, travellators and baggage belt, but I have yet connected the motors.
And also, my very full and messy toolbox!!
That packet of round things at the lower right hand side of the left segment cost $30. I nearly fainted when the store owner at Sim Lim Tower told me the amount…
