Hello, I’m new to arduino and followed a tutorial to build a distance meter. The lcd used was different from the one I have so I improvised a bit and it worked. The distance though keeps moving even when I hold the object sturdily. How do I fix it?
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becuase its a cheap non accurate sensor. use the old way. made 10 mesurements and dived by 10.
I'm not sure how to do that.
If you have a bunch of numbers, and want to get their average, how do you do it?
Sum all the numbers together, and divide it by the count of numbers you have.
4 + 3 + 1 + 5 + 2 + 2 + 4 + 6 + 4 + 1 = 32 The above's average is: 32 / 10 = 3.2
You can do the same with your sensor, too. Measure x number of times to sum the values (make sure your data type can hold the number! Byte can only hold 255, while int can hold a maximum of 2,147,483,64)
Then divide the times you measured in this cycle. And again, don't forget, byte and int can't hold floating point numbers (so only can hold whole numbers like 1, 5 or 200, but can't hold 3.2f).