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Pololu 2590 2591 Optical Encoder Pair Kit for Micro Metal Gearmotors Arduino Leonardo with Headers Purchase the Hi Link 12V 5W Purchase the Hi Link 12V 5W Power Module online at The Engineer Store India's most trusted electronics components store Purchase the Mornsun LM35 20B15 AC DC 35W Enclosed Switching Power Supply online at The Engineer Store India's most trusted electronics components store count pulses over a fixed time interval and convert to RPM using the formula: RPM = (pulse_count encoder_resolution time_interval) * 60 With typical resolutions ranging from 12 to 48 counts per revolution depending on motor gear ratio
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