Create an RPM counter (tachometer) with Arduino using an IR sensor and LCD module. This project calculates RPM based on sensor interrupts and displays the result on a 16x2 LCD. Perfect for measuring ...

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Firstly, the ebay claim that it would be shipped from somewhere in the UK turned out to be false, and it took a day or two longer than the maximum estimated delivery time to arrive from the Far East – ...

Hello everyone! Today I’m going to discuss a cheap type of useful digital rotation per minute counter (Digital RPM Counter). The 4-Digit LED Display RPM comes with a magnetic proximity sensor switch.