NEMA23 Datasheet – Stepper Motor

Part Number : NEMA23

Function : 2-Phase Stepper Motor

Pacakge :  2.3 x 2.3 inch (58.4 x 58.5 mm)

Manufacturers : Schneider Electric

This post explains for the Stepper Motor NEMA 23.


NEMA 23 datasheet


Nema 23 is a stepper motor with a 2.3 x 2.3 inch faceplate. It is suitable for 3d printer, robot arm, cnc machine,etc. In low-speed applications, the stepper motor can be driven at the desired speed without missing a single step.

This stepper motor has different torque, the max torque is 3 Nm. We provide nema 23 stepper motor datasheet and torque curve. The torque is different for each operating speed, but decreases as the stepping speed increases. The reason is the operating principle of the stepper motor. The drive signal of the stepper motor generates a magnetic field in the coil of the motor to generate a step force. The time it takes for the magnetic field to reach its maximum intensity depends on the inductance of the coil, the drive voltage and current limit. As the drive speed increases, the coil maintains its full strength for a shorter period of time and the torque that the motor can produce decreases.

NEMA23 Pinout

NEMA 23 pinout


Wiring and Connections

Signals and wire colors   2.4 Amp motors   3.0 Amp motors    6.0 Amp motors
Phase A                        Red                      Red                  Black
Phase /A                  White / red           White / red             Orange
Phase B                     Green                    Green                   Red
Phase /B                  White / green        White / green           Yellow



1. Voltage Rating : 3.2V
2. Current Rating : 2.8A
3. Holding Torque : 270 oz. in
4. Step Angle : 1.8 deg.
5. Steps Per Revolution : 200
6. No. of Phases : 4
7. Motor Length : 3.1 inches
8. No. of Leads : 4
9 Inductance Per Phase : 3.6mH



1. CNC machines
2. Precise control machines
3. 3D printer/prototyping machines (e.g. RepRap)
4. Laser cutters
5. Pick and place machines

Reference Sites

1. NEMA 23 Stepper Motor  with Arduino (
3. NEMA17 Datasheet – Stepper Motor (


NEMA23 Datasheet PDF Download

NEMA23 pdf

nema 23 vs nema 17

WS2811 Datasheet – Constant current LED drive IC

This post describes for the semiconductor WS2811 Datasheet.

Part Number : WS2811.

Package : DIP 8 Pin, SOP 8 Pin.

Function : 256 Gray level 3 channal Constant current LED drive IC.

Manufacturer : WorldSemi ( ).


WS2811 Datasheet

Description :

The WS2811 is 3 output channels special for LED driver circuit. It internal include intelligent digital port data latch and signal reshaping amplification drive circuit.Also include a precision internal oscillator and a 12V voltage programmable constant current output drive. In the purpose of reduce power supply ripple, the 3 output channels designed to delay turn-on function.

IC use single NZR communication mode.After the chip power-on reset, the DIN port receivedata from controller, the first IC collect initial 24bit data then sent to the internal data latch, theother data which reshaping by the internal signal reshaping amplification circuit sent to the next cascade IC through the DO port. After transmission for each chip,the signal to reduce 24bit. IC adopt auto reshaping transmit technology, making the chip cascade number is not limited the signal transmission, only depend on the speed of signal transmission.



WS2811 pdf schematic


1. Output port compression 12V.
2. Built in stabilivolt, Only add a resistance to IC VDD feet when under 24V power supply.
3. Gray level 256 can be adjusted and scan frequency not less than 400Hz/s.
4. Built in signal reshaping circuit,after wave reshaping to the next driver, ensure wave-form distortion not accumulate.



1. LED decorative lighting.

2. Indoor / outdoor LED video or irregular screen

Reference Site :

How to control WS2811 RGB LED with Arduino –

WS2811 Dataheet