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create parts in fritzing us...
Fritzing Part Editor .... M...
I made a youtube video tutorial on it please watchhttps://youtu.be/yjmZsEdrWVM
Good I made a youtube video tutorial , please watch https://youtu.be/Lf0QgLRjuy0
Motor speed tester using Arduino & IR sensor
Yes you are right, it's my mistake.I will modify this
Contactless Tachometer View Instructable »
How to Make Mini CNC 2D Plotter Using Scrap DVD Drive, L293d Motor Shield & Arduino
They are IR sensors For more information message me on hangout email@example.com
It is depend upon your sensor some gives logical HIGH and some give logical LOW.first of all check your senaor: give power to sensor and chack voltage between OUT and GND, In this condition if voltge is around zero volt then logical HIGH otherwise logical LOW. KEEP IN MIND DONT PLACE ANYTHING IN FRONT OF SENSOR.if your sensor is logical HIGH then you must remove LED, otherwise not need to remove. you can make the changes in program as your need.
Hello I already uploaded a video on you tube, you can search by name "dream sky". I explaned the circuit in video, but that is not fully explaned.and I am sorry, I can not make a video on breadboard because I am busy and I have not electronic components now.
Automatic Railway Crossing Using Arduino
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