Hello all
im an Egyptian engineering student
my project is monitoring every thing in car:
speed,distance to surrounding obstacles,temperature,oil leve& pressure,battery stautus, door & light status,......
well, i searched alot for sensors ,measuring speed&distance to surrounding obstacles specialy ,but i found nothing except ultrasonic sensors
now, i mentioned that im Egyptian coz these kinds of sensors are expensive here
too expensive for a student to buy
i dont know what to do
can any one tell me what sensors to use or what way to measure speed and distance to surroundings but without paying much money?????
even i the accuracy is not too good
by the way, i found sth called "purpose built potentiometer" for measuring large scale distance
but this is the only piece of information i found about it, nothing more!!!!
i wish u help me plz, or i'll have to change the whole project, and im running out of time!!!!!!!!
thanx alot
waiting ur replies
byeeee