The Annin Robotics AR2 is an open source low cost robot. Here is the youtube video show how to build a AR2 robot by yourself OPEN SOURCE LOW COST ROBOTS Package includes: 1 x Nema 17 Stepper Motor L=39mm Gear Ratio 20:1 High..

Difference between AR3 and AR2 is that each motor in AR3 have rear shaft and mounting holes for encoder. Here is the youtube video show how to build a AR3 robot by yourself  OPEN SOURCE LOW COST ROBOTS If you expect to ..

Package includes: 2 x Nema 17 Bipolar 0.9deg 46Ncm (65.1oz.in) 2A 2.8V 42x42x48mm 4 Wires 17HM19-2004S1 2 x Nema 17 Bipolar 59Ncm (84oz.in) 2A 42x48mm 4 Wires w/ 1m Cable & Connector 17HS19-2004S2 1 x Nema 17 Bipolar 45..

Package includes: 1 x Nema 17 Bipolar 1.8deg 16Ncm (22.6oz.in) 1A 3.7V 42x42x20mm 4 Wires 17HS08-1004S 6 x Nema 17 Bipolar 59Ncm (84oz.in) 2A 42x48mm 4 Wires w/ 1m Cable & Connector 17HS19-2004S1 ..

This kit only has motors in AR3 as the below.  Package includes: Keys on motors are taken apart by default. 1 x Nema 17 Dual Shaft Stepper Motor L=39mm Gear Ratio 10:1 High Precision Planetary Gearbox 9.5mm Rear Shaf..

Electrical Specification Manufacturer Part Number: 17HS15-1504S-X1 Motor Type: Bipolar Stepper Step Angle: 1.8 deg Holding Torque: 45Ncm(63.74oz.in) Rated Current/phase: 1.50A Phase Resistance: 2.3ohms Inductance: 4.4m..

This bipolar Nema 17 stepper motor with step angle 1.8deg and size 42x42x39mm. It has 4 wires, each phase draws current 1.5A, with holding torque 45Ncm (63.74oz.in). 3-PACK only need $22.15, here is the link 3-17HS15-1504S-X1 ..

Motor Specification Manufacturer Part Number: 23HS30-4004D-E1000 Motor Type: Bipolar Stepper Step Angle: 1.8 deg Frame Size: 57 x 57 mm Holding Torque: 1.85 N.m(262.03 oz.in) Rated Current/phase: 4 A Shaft Diameter: Φ8 ..