Introduction: N

Step 1: M

Step 2: W


Step 3: P



grayson.tuck.19 (author)2017-05-23

Do I use resistors? I don't want to fry anything.

Well,if you're using the linked components and following then instruction properly,then you can turn in on without any hesitation.

yes,I do recommend that to power it up from either the USB port or the DC power jack,rather than powering it from the pins.

If still you face any problem please let me know.


I used no resistors but the LCD is not displaying any of the information. Is it a bad LCD or would I have a connection problem?

Yes,l got your problem.if you are using LCD Shield,type in the highlighted portion(in image) " LiquidCrystal lcd(8,9,4,5,6,7);; "otherwise if you are using LCD screen alone then " LiquidCrystal lcd(12, 11, 5, 4, 3, 2); ".you may experiment in both ways,nothing will go wrong,give it a try!!!

PratyayM1 made it! (author)PratyayM12017-05-29

check out the highlighed part

PratyayM1 made it! (author)2017-04-17

Hello there,hope you like my build,don't forget to leave a comment,it feels great to know your opinion and suggestions regarding my build,and please please vote me for the contest it is my time,hope to win!!!

manng (author)2017-04-13

Hey thanks for this beautiful project.

can u please help me i have build this project but the values are not stable it is showing many values it is possible to get one exact height value

PratyayM1 (author)manng2017-04-17

Hello there,it feels great to know that some one like your build & wants to build it.

Okay,I got your problem even I had faced the same problem,their could many possible reasons,firstly check the wiring properly,if you have not soldered it,make sure the wires are not loose.secondly you could increase the delay time.Even then if you are getting irreverent readings,then let me know,I'll try my best to to get it working.

About This Instructable




Bio: Hello there,I'm a teenager from India. My hobbies include Electronics and programming,so i decided to get an Instructables account,as it is ... More »
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