Bachin Stepper Motor 4240-15a -

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[ I_max = V_ref \times 2 ] (if sense resistors = 0.1 Ω). For 1.5 A, set ( V_ref \approx 0.75 , V ). Example with A4988 : bachin stepper motor 4240-15a

void loop() // 200 steps = 1 revolution for(int i = 0; i < 200; i++) digitalWrite(STEP_PIN, HIGH); delayMicroseconds(1000); // 500 µs low + 500 µs high = 1 ms period = 1000 steps/sec = 300 rpm digitalWrite(STEP_PIN, LOW); delayMicroseconds(1000); : [ I_max = V_ref \times 2 ] (if sense resistors = 0