NEMA17 Datasheet – Stepper Motor

Part Number : NEMA17

Function : 2-Phase Stepper Motor

Pacakge :  1.7 x 1.7 inch (43.2 x 43.2 mm)

Manufacturers : Schneider Electric


NEMA17 Stepper Motor


A stepper motor to satisfy all your robotics needs! This 4-wire bipolar stepper has 1.8° per step for smooth motion and a nice holding torque. The motor was specified to have a max current of 350mA so that it could be driven easily with an Adafruit motor shield for Arduino (or other motor driver) and a wall adapter or lead-acid battery.

Some nice details include a ready-to-go cable and a machined drive shaft (so you can easily attach stuff). We drove it with an Adafruit motor shield for Arduino and it hummed along nicely at 50 RPM.

Pinout (  Black(A+), Green(A-), Red(B+), Blue(B-) )

NEMA17 datasheet pinout

This is high torque Nema 17 stepper motor with 1.8 deg. step angle (200 steps/revolution). Each phase draws 2A, allowing for a holding torque of 45Ncm( It’s ideal for the RepRap Prusa, Mendel 90, Rostock and similar 3D printers, as well as CNC and robotics applications.


Reference Sites



NEMA17 Datasheet PDF Download

RDM630 Datasheet – Arduino 125Khz RFID Module

Part Number : RDM630

Function : Arduino 125Khz RFID Module

Size : 38.5mm x 19mm x 9mm

Manufacturers : Unspecified

RDM630 datasheet

Description :

RDM 125KHz card mini-module is designed for reading code from 125KHz card compatible read-only tags and read/write card . It can be applied in office/home security, personal identification, access control, anti-forgery, interactive toy and production control systems etc.

Specification and Parameter

1. Frequency 125KHz
2. Baud Rate : 9600(TTL Electricity Level RS232 format
3. Interface : Weigang26 Or TTL Electricity Level RS232 format
4. Power supply : DC 5V (± 5% )
5. Current : < 50Ma
6. Operating range : > 50mm(Depend on Card/Tag shape, manufacturer )
7. Expand I/O port : N/A
8. Indication light : N/A
9. Working temperature : -10 ℃ ~ +70 ℃
10. Storage temperature : -20 ℃ ~ +80 ℃
11. Max. humidity Relative humidity 0 ~ 95%


Reference Site :


1. Support external antenna
2. Maximum effective distance up to 50mm
3. Less than 100ms decoding time
4. UART TTL interface
5. Support EM4100 compatible read only or read/write tags
6. Built-in external bi-color LED and buzzer driver
7. Small outline design

RDM630 Datasheet

RDM630 Datasheet PDF Download

RDM630 pdf

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