|
PROJECT
You will create a car safety alarm.
When on, it should light up an LED and make a buzzer ring.
SPECIFICATIONS
You need the following sensors that will serve as input. Use green wires for these inputs. Make sure to label each one.
·
Motor
is on. (Label: M)
·
Key
is in ignition. (Label: K)
·
Car
is in park. (Label: P)
·
Door
is open. (Label: D)
·
Seatbelt
is fastened. (Label: S)
The alarm should be on
when and only when:
·
The
door is open and the key is in the ignition and the motor is off. (Don't forget your keys alarm)
·
The
motor is on and the car is not in park and the seatbelt is not fastened
(Fasten your seatbelt alarm)
·
The
motor is on and the car is not in park and the door is open (Door is ajar
alarm)
You can assume that the
inputs will be legal. So you do not
need to worry about a situation where the key is not in the ignition and
the motor is on.
LABEL INPUT WIRES
Make sure you label your
input wires. To keep labels small,
perhaps only use one letter on each like
M = Motor on
K= Key in ignition
P = Car is in park
D = Door open
S = Seatbelt fastened
WORK
Design and build the
circuit on a breadboard.
Show your teacher.
|