Motors

Size: 28 mm square × 32 mm, not including the shaft (NEMA 11) Weight: 110 g (4 oz) Shaft diameter: 5 mm “D” Steps per revolution: 200 Current rating: 670 mA per coil Voltage rating: 3.8 V Resistance: 5.6 Ω per coil Holding torque: 600 g-cm (8.3 oz-in) Inductance: 4.2 mH per coil Lead length: 30 cm (12″) Output shaft supported by two ball bearings

100% Arduino Compatible ULN2003A driver chip controls unipolar & bipolar stepper motors

Mate with Arduino and Arduino compatible boards Provides connectors to support 2 servos. Servo power supply can be configured to source from the servo power terminal block or from the Arduinos 5V pin. Support up to 4 bi-directional DC motors with individual 8-bit speed selection, and up to 2 stepper motors (unipolar or bipolar) with single coil, double coil or interleaved stepping. Motor power supply can be configured to source from the motor power terminal block or from the Arduinos VIN pin. Support motors operating between 4.5V to 25V DC. Includes two L293D Quad H-Bridges chipset that can provide 0.6A per bridge (1.2A peak) with thermal shutdown protection, internal kickback protection diodes. Provides DIP sockets to support other pin compatible motor bridge chipset. Integrated pull down resistor to keep motor disable during start up. Individual LED indicator for motor power supply state and servo power supply state. Brings out the Arduinos reset button to the top of the shield

100% Arduino Compatible L298 dual h bridge driver Reverse motor polarity (motor direction)

Ideally suited for interfacing between low−level digital logic circuitry and high−power peripheral loads High−voltage, high−current Darlington arrays in an 18−Lead DIP type package and feature peak load current ratings to 600mA for each of the eight drivers in each device Typical loads include relays, solenoids, stepping motors, multiplexed LED and incadescent displays, and heaters

While regular servos that get modified to continuous rotation tend to be difficult to control the speed on, the HSR-2645CR circuit was designed from the factory to drive the servo smoothly and with fine-control over the speed Since the HSR-2645CR servo is digital, it's able to be tuned using a Hitec servo programmer The programmable parameters allow you to tailor the servo to best-fit your application Excellent for compact sliders, winch mechanisms, small panning devices and wheel-drives on robots