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They won't write back so I can return this piece of junk!!!!!!!!
The sensor then sends these signals to the arduino, and using the libraries you can very easily calculate the distance of the object.
This particular unit works as advertised, and seems to be as accurate as I would expect from such a device - I highly recommend it!
The description claims "ranging distance : 2cm~500 cm". The item I received would not work for any distances below 40 cm. Read morePublished 2 days ago by Andy Grove
I use this with an arduino as a parking sensor in the garage nad it works wonderfully. I'm thinking of getting another to use for an indicator to tell if the garage door is up or... Read morePublished 4 days ago by rbiddle
I purchased one from this seller. Then I ordered a second. It came without a crystal. So I sent it back, and ordered a replacement. Read morePublished 8 days ago by Bud Ryerson
Cannot go wrong on account of price. The accuracy is reasonable - satisfactory for hobby work. (I use temperature as a variable in my calculations for the echo time). Read morePublished 9 days ago by Matha Goram
Works great with arduino. Relatively accurate within an +/- inch or a couple cms with the program I initially used and depending upon the object being detected and background. Read morePublished 12 days ago by John D.
Works as advertised, no issues. Highly recommend the Arduino NewPing library over the original/standard library.Published 15 days ago by Mark Z