NEMA 17 Stepper Motor (Used / Fully Tested)

Standard NEMA 17 frame for broad compatibility
1.8° step angle (200 steps/rev) for precise control
High torque (~40–50 N·cm, model dependent)
Bipolar 4-wire design for reliable performance
Tested & fully functional used unit – minor cosmetic wear
Ideal for 3D printers, CNC, robotics, and automation

SKU: aA1840 Categories: Motors | Drivers, Stepper Motors and Accessories Tags: Motors, Stepper Motor, Stepper Motors and Accessories

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Description

Power your next hardware build with our reliable, gently used NEMA 17 Stepper Motor. Pulled from working industrial or consumer equipment, these motors are rigorously tested for coil continuity, torque retention, and step accuracy to ensure they perform just like new. The NEMA 17 is the gold standard for precision control in the maker and electronics community. Whether you are repairing a 3D printer mainboard setup, building a custom CNC machine, or prototyping an autonomous maze-solving robot, this cost-effective motor delivers the exact positional accuracy you need without the premium price tag.

Key Features

Cost-Effective Prototyping: An ideal, budget-friendly solution for rapid hardware development and testing.
Universal Compatibility: Interfaces seamlessly with standard motor drivers such as the A4988, DRV8825, TMC2209, or L298N modules, making it perfect for Arduino or ESP32-based projects.
High Precision: Delivers a $1.8^circ$ step angle for smooth, accurate, and repeatable movements.
Standardized Form Factor: Features the industry-standard NEMA 17 faceplate ( $42.3 text{ mm} times 42.3 text{ mm}$ ) for easy mounting in standard brackets and 3D-printed chassis.
Quality Assured: Each used unit is manually inspected for physical integrity and electrically tested to guarantee immediate plug-and-play functionality.

Technical Specifications

(Note: As these are used/salvaged motors, exact specifications may vary slightly by manufacturer batch, but generally adhere to the following standard NEMA 17 baseline)

Specification	Detail
Motor Type	Bipolar Stepper
Step Angle	$1.8^circ$ (200 steps per revolution)
Rated Voltage	Typically 3V – 12V DC (Driven by current)
Rated Current	~1.2A to 1.7A per phase
Holding Torque	~40 N·cm to 45 N·cm
Phase Resistance	~1.5 $Omega$ to 2.5 $Omega$
Wiring	4-Wire (Standard Dupont or JST-XH connector)
Shaft Diameter	5 mm (typically D-shaft for secure pulley mounting)
Condition	Used / Refurbished

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Pin Connections

1 Table

Pin Connections Table 1

Board	Sensor Pin	Connection
NEMA 17 coils	to driver output	A+/A-/B+/B- into a step/dir driver's motor terminals

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NEMA 17 Stepper Motor (Used / Fully Tested)

7 Examples • C/C++ | Boards: Arduino Uno, Arduino Nano, Arduino Mega, ESP32, ESP8266, STM32, Raspberry Pi Pico

Wrap

NEMA 17 Stepper Motor (Used / Fully Tested) - Arduino Uno

NEMA 17 Stepper Motor (Used / Fully Tested) - Arduino Nano

NEMA 17 Stepper Motor (Used / Fully Tested) - Arduino Mega

NEMA 17 Stepper Motor (Used / Fully Tested) - ESP32

NEMA 17 Stepper Motor (Used / Fully Tested) - ESP8266

NEMA 17 Stepper Motor (Used / Fully Tested) - STM32

NEMA 17 Stepper Motor (Used / Fully Tested) - Raspberry Pi Pico

📄 File: nema_17_stepper_motor_(used_/_fully_tested)_-_arduino_uno.inoArduino Uno

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5// external driver (e.g. A4988/DRV8825): STEP=3, DIR=4 on Arduino Uno. Motor power comes from the driver's own VMOT supply, not the microcontroller.

6#define STEP_PIN 3

7#define DIR_PIN 4

9void setup() {

10 Serial.begin(115200);

11 pinMode(STEP_PIN, OUTPUT);

12 pinMode(DIR_PIN, OUTPUT);

13}

15void loop() {

16 digitalWrite(DIR_PIN, HIGH);

17 for (int i = 0; i < 200; i++) { // 200 steps = 1 full revolution on a 1.8deg/step motor at full-step

18 digitalWrite(STEP_PIN, HIGH);

19 delayMicroseconds(800);

20 digitalWrite(STEP_PIN, LOW);

21 delayMicroseconds(800);

22 }

23 delay(500);

25 digitalWrite(DIR_PIN, LOW);

26 for (int i = 0; i < 200; i++) {

27 digitalWrite(STEP_PIN, HIGH);

28 delayMicroseconds(800);

29 digitalWrite(STEP_PIN, LOW);

30 delayMicroseconds(800);

31 }

32 delay(500);

33}

📄 File: nema_17_stepper_motor_(used_/_fully_tested)_-_arduino_nano.inoArduino Nano

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5// external driver (e.g. A4988/DRV8825): STEP=3, DIR=4 on Arduino Nano. Motor power comes from the driver's own VMOT supply, not the microcontroller.

6#define STEP_PIN 3

7#define DIR_PIN 4

9void setup() {

10 Serial.begin(115200);

11 pinMode(STEP_PIN, OUTPUT);

12 pinMode(DIR_PIN, OUTPUT);

13}

15void loop() {

16 digitalWrite(DIR_PIN, HIGH);

17 for (int i = 0; i < 200; i++) { // 200 steps = 1 full revolution on a 1.8deg/step motor at full-step

18 digitalWrite(STEP_PIN, HIGH);

19 delayMicroseconds(800);

20 digitalWrite(STEP_PIN, LOW);

21 delayMicroseconds(800);

22 }

23 delay(500);

25 digitalWrite(DIR_PIN, LOW);

26 for (int i = 0; i < 200; i++) {

27 digitalWrite(STEP_PIN, HIGH);

28 delayMicroseconds(800);

29 digitalWrite(STEP_PIN, LOW);

30 delayMicroseconds(800);

31 }

32 delay(500);

33}

📄 File: nema_17_stepper_motor_(used_/_fully_tested)_-_arduino_mega.inoArduino Mega

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5// external driver (e.g. A4988/DRV8825): STEP=3, DIR=4 on Arduino Mega. Motor power comes from the driver's own VMOT supply, not the microcontroller.

6#define STEP_PIN 3

7#define DIR_PIN 4

9void setup() {

10 Serial.begin(115200);

11 pinMode(STEP_PIN, OUTPUT);

12 pinMode(DIR_PIN, OUTPUT);

13}

15void loop() {

16 digitalWrite(DIR_PIN, HIGH);

17 for (int i = 0; i < 200; i++) { // 200 steps = 1 full revolution on a 1.8deg/step motor at full-step

18 digitalWrite(STEP_PIN, HIGH);

19 delayMicroseconds(800);

20 digitalWrite(STEP_PIN, LOW);

21 delayMicroseconds(800);

22 }

23 delay(500);

25 digitalWrite(DIR_PIN, LOW);

26 for (int i = 0; i < 200; i++) {

27 digitalWrite(STEP_PIN, HIGH);

28 delayMicroseconds(800);

29 digitalWrite(STEP_PIN, LOW);

30 delayMicroseconds(800);

31 }

32 delay(500);

33}

📄 File: nema_17_stepper_motor_(used_/_fully_tested)_-_esp32.inoESP32

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5// external driver (e.g. A4988/DRV8825): STEP=26, DIR=27 on ESP32. Motor power comes from the driver's own VMOT supply, not the microcontroller.

6#define STEP_PIN 26

7#define DIR_PIN 27

9void setup() {

10 Serial.begin(115200);

11 pinMode(STEP_PIN, OUTPUT);

12 pinMode(DIR_PIN, OUTPUT);

13}

15void loop() {

16 digitalWrite(DIR_PIN, HIGH);

17 for (int i = 0; i < 200; i++) { // 200 steps = 1 full revolution on a 1.8deg/step motor at full-step

18 digitalWrite(STEP_PIN, HIGH);

19 delayMicroseconds(800);

20 digitalWrite(STEP_PIN, LOW);

21 delayMicroseconds(800);

22 }

23 delay(500);

25 digitalWrite(DIR_PIN, LOW);

26 for (int i = 0; i < 200; i++) {

27 digitalWrite(STEP_PIN, HIGH);

28 delayMicroseconds(800);

29 digitalWrite(STEP_PIN, LOW);

30 delayMicroseconds(800);

31 }

32 delay(500);

33}

📄 File: nema_17_stepper_motor_(used_/_fully_tested)_-_esp8266.inoESP8266

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5// external driver (e.g. A4988/DRV8825): STEP=D5, DIR=D6 on ESP8266. Motor power comes from the driver's own VMOT supply, not the microcontroller.

6#define STEP_PIN D5

7#define DIR_PIN D6

9void setup() {

10 Serial.begin(115200);

11 pinMode(STEP_PIN, OUTPUT);

12 pinMode(DIR_PIN, OUTPUT);

13}

15void loop() {

16 digitalWrite(DIR_PIN, HIGH);

17 for (int i = 0; i < 200; i++) { // 200 steps = 1 full revolution on a 1.8deg/step motor at full-step

18 digitalWrite(STEP_PIN, HIGH);

19 delayMicroseconds(800);

20 digitalWrite(STEP_PIN, LOW);

21 delayMicroseconds(800);

22 }

23 delay(500);

25 digitalWrite(DIR_PIN, LOW);

26 for (int i = 0; i < 200; i++) {

27 digitalWrite(STEP_PIN, HIGH);

28 delayMicroseconds(800);

29 digitalWrite(STEP_PIN, LOW);

30 delayMicroseconds(800);

31 }

32 delay(500);

33}

📄 File: nema_17_stepper_motor_(used_/_fully_tested)_-_stm32.inoSTM32

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5// external driver (e.g. A4988/DRV8825): STEP=PB0, DIR=PB1 on STM32. Motor power comes from the driver's own VMOT supply, not the microcontroller.

6#define STEP_PIN PB0

7#define DIR_PIN PB1

9void setup() {

10 Serial.begin(115200);

11 pinMode(STEP_PIN, OUTPUT);

12 pinMode(DIR_PIN, OUTPUT);

13}

15void loop() {

16 digitalWrite(DIR_PIN, HIGH);

17 for (int i = 0; i < 200; i++) { // 200 steps = 1 full revolution on a 1.8deg/step motor at full-step

18 digitalWrite(STEP_PIN, HIGH);

19 delayMicroseconds(800);

20 digitalWrite(STEP_PIN, LOW);

21 delayMicroseconds(800);

22 }

23 delay(500);

25 digitalWrite(DIR_PIN, LOW);

26 for (int i = 0; i < 200; i++) {

27 digitalWrite(STEP_PIN, HIGH);

28 delayMicroseconds(800);

29 digitalWrite(STEP_PIN, LOW);

30 delayMicroseconds(800);

31 }

32 delay(500);

33}

📄 File: nema_17_stepper_motor_(used_/_fully_tested)_-_raspberry_pi_pico.inoRaspberry Pi Pico

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5// external driver (e.g. A4988/DRV8825): STEP=14, DIR=15 on Raspberry Pi Pico. Motor power comes from the driver's own VMOT supply, not the microcontroller.

6#define STEP_PIN 14

7#define DIR_PIN 15

9void setup() {

10 Serial.begin(115200);

11 pinMode(STEP_PIN, OUTPUT);

12 pinMode(DIR_PIN, OUTPUT);

13}

15void loop() {

16 digitalWrite(DIR_PIN, HIGH);

17 for (int i = 0; i < 200; i++) { // 200 steps = 1 full revolution on a 1.8deg/step motor at full-step

18 digitalWrite(STEP_PIN, HIGH);

19 delayMicroseconds(800);

20 digitalWrite(STEP_PIN, LOW);

21 delayMicroseconds(800);

22 }

23 delay(500);

25 digitalWrite(DIR_PIN, LOW);

26 for (int i = 0; i < 200; i++) {

27 digitalWrite(STEP_PIN, HIGH);

28 delayMicroseconds(800);

29 digitalWrite(STEP_PIN, LOW);

30 delayMicroseconds(800);

31 }

32 delay(500);

33}

Project Notes:

Bare bipolar stepper motor - needs a step/direction driver wired between it and the microcontroller.

Specification

WeightWeight	280 g
Dimensions	4,2 × 4,2 × 4 cm
Motor Type	Stepper Motor
Frame Size	NEMA 17 (42×42 mm)
Voltage	2–12V DC (depends on model)
Current	1–2A per phase (typical)
Step Angle	1.8° per step
Shaft	Single shaft, 5mm diameter (typical)
Material	Metal & plastic components
Usage	3D printers, CNC machines, robotics, precise motion control