Arduino with magnetic sensor...Help please.!

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fiyepr
 
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Arduino with magnetic sensor...Help please.!

Post by fiyepr »

I use an arduino uno with a magnetic sensor because i want to create a parking spaces availability.! I have already finish the code to detect the change of the sensor values when a car park over the sensor.. And now i want to write a code to find the time of this change.. What is the easiest method.?? I am thinking to send the data into an array and compare the values so i can find the change between the values.. I am not sure how can i do it.. If anyone can help me with his advice or with example of code please reply..!! Thank you.!

In this picture are the values that i take from the sensor.. the grad value change when i have magnetic field over the sensor.. As you can see grad=149.08, grad= 147.65, grad= 148.53, grad= 149.08 and after that i place magnetic field go to grad= -15.11, grad= -130.60, grad= -129.89, grad= -130.60, grad= -129.89. This is the change that i want to detect and for example after that i will turn on the led.!
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Franklin97355
 
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Re: Arduino with magnetic sensor...Help please.!

Post by Franklin97355 »

If you would post your code and a description of where you actually need help like, "when value changes more than 100 points led will go on" For the time I would recommend an RTC chip.

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