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A4988 STEP STICK MODULE maker 3V 5V DC Detection 3V 5V DC Detection Range 2 cm 30 cm (adjustable via onboard potentiometer) Output Type Digital (HIGH LOW) with onboard comparator (LM393) IR Emitter Infrared LED (940 nm wavelength) IR Receiver Photodiode Phototransistor Indicator LEDs Power LED + Detection Status LED Sensitivity Adjustment Onboard trimmer potentiometer for threshold tuning Output Current Up to 15 mA (sink source) Response Time < 2 ms Interface Pins VCC The flexible FPC ribbon cable design enables installation in tight spaces and unusual mounting orientations Whether you are a hobbyist microstepping configuration
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