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This coated steel bracket lets you securely mount typical NEMA 23-size stepper motors to your project. The bracket features two slots for various mounting solutions and includes four M4×16mm screws, washers, and nuts for securing the motor to the bracket.

The SparkFun Inventor’s Kit has everything you need to construct a variety of circuits that will teach you how to use an Arduino Uno to read sensors, display information on an LCD, drive motors, and more. No previous programming or electronics experience is necessary, which makes this a great way for beginners to get started with embedded systems. Version 3.2 adds a new Simon Says circuit with all the LEDs and tactile buttons needed to complete it.

This copper alloy traveling nut is intended for use with TR8×2 threaded rods and features a mounting flange with four holes threaded for M3 screws. This is the same nut that is included with our stepper motors with lead screw.

This NEMA 17-size hybrid bipolar stepping motor has an integrated 38 cm (15″) threaded rod as its output shaft, turning it into a linear actuator capable of precision open-loop positioning. The included traveling nut has four mounting holes and moves 40 µm (1.6 mil) per full step; finer resolution can be achieved with microstepping. The stepper motor has a 1.8° step angle (200 steps/revolution) and each phase draws 1.7 A at 2.8 V, allowing for a holding torque of 3.7 kg-cm (51 oz-in).

This NEMA 17-size hybrid bipolar stepping motor has an integrated 18 cm (7″) threaded rod as its output shaft, turning it into a linear actuator capable of precision open-loop positioning. The included traveling nut has four mounting holes and moves 40 µm (1.6 mil) per full step; finer resolution can be achieved with microstepping. The stepper motor has a 1.8° step angle (200 steps/revolution) and each phase draws 1.7 A at 2.8 V, allowing for a holding torque of 3.7 kg-cm (51 oz-in).

This gearmotor is a miniature (0.94" x 0.39" x 0.47"), high-power brushed DC motor with 150.58:1 metal gearbox, similar to Sanyo’s popular 12 mm gearmotors. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft. This version also has a 4.5 x 1 mm extended motor shaft.

Key specs at 6 V: 200 RPM and 70 mA free-run, 40 oz-in (2.9 kg-cm) and 1.6 A stall.

This miniature, high-torque gearmotor has a 986.41:1 gearbox, making it a great choice for applications requiring fine control at very low speeds. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft. This version also has a 4.5 x 1 mm extended motor shaft.

Key specs at 6 V: 32 RPM and 70 mA free-run, 125 oz-in (9 kg-cm) and 1.6 A stall. (Note: stall torque and current specifications are theoretical values; stalling the motor will damage the gearbox.)

The UM7 orientation sensor from CH Robotics is an Attitude and Heading Reference System (AHRS) that contains a three-axis accelerometer, rate gyro, and magnetometer. It combines this data using an Extended Kalman Filter to produce attitude and heading estimates.

The SkyRC iMAX B6AC V2 can charge and discharge NiMH, NiCd, Pb, LiPo, Li-ion, and LiFe batteries with individual cell balancing for up to 6 lithium cells. It features a built-in adapter that can be powered from 100 V to 240 V AC, or it can alternatively be powered via an 11 V to 18 V DC input. With its versatile charging capabilities, PC control software, and advanced features like input power monitoring, delta-peak sensitivity, cyclic charging and discharging, and more, the iMAX B6AC V2 is a great addition to the workbench of any RC, DIY, or robot enthusiast.

This cylindrical, 2.62" x 0.98" x 0.98" gearmotor uses a brushed DC motor with extra-strong magnets and a 98.78:1 metal gearbox to deliver a lot of power in a relatively small package. It has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 4741 counts per revolution of the gearbox’s output shaft. These units have a 0.315"-long, 4 mm-diameter D-shaped output shaft. We also carry a version of this gearmotor without an encoder.

Key specs at 6 V: 100 RPM and 450 mA free-run, 160 oz-in (11.5 kg-cm) and 6 A stall.

This cylindrical, 2.38" x 0.98" x 0.98" gearmotor uses a brushed DC motor with extra-strong magnets and a 4.4:1 metal gearbox to deliver a lot of power in a relatively small package. It has an integrated 48 CPR quadrature encoder on the motor shaft, which provides 211.2 counts per revolution of the gearbox’s output shaft. These units have a 0.315"-long, 4 mm-diameter D-shaped output shaft. We also carry a version of this gearmotor without an encoder.

Key specs at 6 V: 2220 RPM and 450 mA free-run, 8 oz-in (0.6 kg-cm) and 6 A stall.

The A-Star 32U4 Prime SV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 5 V to 36 V. The A-Star 32U4 Prime SV is available in several configurations; item #3115 includes preinstalled female headers common to many Arduinos, microSD support, and a removable 8×2 character LCD.

The A-Star 32U4 Prime SV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 5 V to 36 V. The A-Star 32U4 Prime SV is available in several configurations; item #3114 includes preinstalled female headers common to many Arduinos and microSD support.

The A-Star 32U4 Prime SV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 5 V to 36 V. The A-Star 32U4 Prime SV is available in several configurations; item #3113 has no microSD support and includes preinstalled female headers common to many Arduinos.

The A-Star 32U4 Prime SV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 5 V to 36 V. The A-Star 32U4 Prime SV is available in several configurations; item #3112 includes microSD support and does not include any through-hole components; it is intended for those who want to customize the way it is assembled.

The A-Star 32U4 Prime SV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 5 V to 36 V. The A-Star 32U4 Prime SV is available in several configurations; item #3111 has no microSD support and does not include any through-hole components; it is intended for those who want to customize the way it is assembled.

These 17 mm long aluminum adapters convert a 3 mm diameter shaft to a 12 mm hex shaft that compatible with many common hobby RC wheels. The set includes two adapters, two M4 screws for securing wheels to the adapters, four M3 set screws for securing the adapters to motor shafts, and one 1.5 mm Allen wrench for use with the set screws.

These 17 mm long aluminum adapters convert a 4 mm diameter shaft to a 12 mm hex shaft that compatible with many common hobby RC wheels. The set includes two adapters, two M4 screws for securing wheels to the adapters, four M3 set screws for securing the adapters to motor shafts, and one 1.5 mm Allen wrench for use with the set screws.

These 35 mm long aluminum adapters convert a 6 mm diameter shaft to a 12 mm hex shaft that compatible with many common hobby RC wheels. The set includes two adapters, two M4 screws for securing wheels to the adapters, four M3 set screws for securing the adapters to motor shafts, and one 1.5 mm Allen wrench for use with the set screws.

This black anodized aluminum bracket lets you securely mount typical NEMA 14-size stepper motors to your project. The bracket features several slots and holes for a variety of mounting solutions, and four M3×5mm screws are included for securing the motor to the bracket.

These small brushed DC gearmotors can deliver a lot of power for their size. This version has a 56:1 metal gearbox with a 0.276"-long, 4 mm-diameter D-shaped output shaft.

Key specs at 6 V: 250 RPM and 250 mA free-run, 45 oz-in (3.3 kg-cm) and 3.3 A stall.

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 9 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors. High efficiencies are maintained at light loads by dynamically changing the switching frequency, and an optional shutdown pin enables a low-power state with a current draw of a few hundred microamps.

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 7.5 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors. High efficiencies are maintained at light loads by dynamically changing the switching frequency, and an optional shutdown pin enables a low-power state with a current draw of a few hundred microamps.

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 6 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors. High efficiencies are maintained at light loads by dynamically changing the switching frequency, and an optional shutdown pin enables a low-power state with a current draw of a few hundred microamps.

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 3.3 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 80% to 95% make this regulator well suited for powering moderate loads like sensors or small motors. High efficiencies are maintained at light loads by dynamically changing the switching frequency, and an optional shutdown pin enables a low-power state with a current draw of a few hundred microamps.

The A-Star 32U4 Prime LV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 2.7 V to 11.8 V. The A-Star 32U4 Prime LV is available in several configurations; item #3107 has no microSD support and includes preinstalled female headers common to many Arduinos.

The A-Star 32U4 Prime LV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 2.7 V to 11.8 V. The A-Star 32U4 Prime LV is available in several configurations; item #3109 includes preinstalled female headers common to many Arduinos, microSD support, and a removable 8×2 character LCD.

The A-Star 32U4 Prime LV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 2.7 V to 11.8 V. The A-Star 32U4 Prime LV is available in several configurations; item #3108 includes preinstalled female headers common to many Arduinos and microSD support.

The A-Star 32U4 Prime LV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 2.7 V to 11.8 V. The A-Star 32U4 Prime LV is available in several configurations; item #3106 includes microSD support and does not include any through-hole components; it is intended for those who want to customize the way it is assembled.

The A-Star 32U4 Prime LV is a programmable board based on Atmel’s ATmega32U4 microcontroller and arranged in the common Arduino form factor. The A-Star Prime offers many additional features and improvements over competing products, including superior power management that enables efficient operation from 2.7 V to 11.8 V. The A-Star 32U4 Prime LV is available in several configurations; item #3105 has no microSD support and does not include any through-hole components; it is intended for those who want to customize the way it is assembled.

This accessory pack contains a variety of parts and headers that can be installed on an A-Star Prime for customized assembly.

This connector is a triple-row, 21-pin (3×7), straight female header strip designed to match 0.1" male headers.

This connector is a triple-row, 18-pin (3×6), straight female header strip designed to match 0.1" male headers.

The GP2Y0A51SK0F is the shortest-range Sharp analog distance sensor we carry, featuring a detection range of 0.8″ to 6″ (2 cm to 15 cm). The shorter range gives you higher resolution measurements, and the low minimum detection distance makes this sensor great for detecting very close objects. The distance is indicated by an analog voltage, making this sensor very easy to use.

This two-part aluminum assembly mounts directly to 1/4 inch diameter motor output shafts like those on our NEMA 23 stepper motors and allows you to drive most scooter, skateboard, inline skate, and other common wheels that are compatible with popular 608 ball bearings. Two M4 set screws are included for securing the threaded adapter piece to a motor shaft, and three 14 mm M3 screws are included for clamping the wheel between the threaded adapter piece and the washer.

The compact (0.5″ × 0.7″) D24V10F12 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 12 V while allowing for a maximum output current of 1 A. This regulator offers typical efficiencies between 85% and 93% and has a very low dropout, so it can be used with input voltages as low as a few hundred millivolts above 12 V. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

The compact (0.5″ × 0.7″) D24V10F9 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 9 V while allowing for a maximum output current of 1 A. This regulator offers typical efficiencies between 85% and 93% and has a very low dropout, so it can be used with input voltages as low as a few hundred millivolts above 9 V. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

The compact (0.5″ × 0.7″) D24V10F6 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 6 V while allowing for a maximum output current of 1 A. This regulator offers typical efficiencies between 85% and 93% and has a very low dropout, so it can be used with input voltages as low as a few hundred millivolts above 6 V. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

The compact (0.5″ × 0.7″) D24V10F5 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 5 V while allowing for a maximum output current of 1 A. This regulator offers typical efficiencies between 85% and 90% and has a very low dropout, so it can be used with input voltages as low as a few hundred millivolts above 5 V. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

The compact (0.5″ × 0.7″) D24V10F3 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 3.3 V while allowing for a maximum output current of 1 A. This regulator offers typical efficiencies between 80% and 90% and has a very low dropout, so it can be used with input voltages as low as a few hundred millivolts above 3.3 V. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

This adult L (large) T-shirt is charcoal gray. It features the Pololu logo, composed of a white printed circuit board layout, on the front, and the Pololu slogan, “Engage Your Brain”, on the back.

This adult L (large) T-shirt is cardinal red. It features the Pololu logo, composed of a white printed circuit board layout, on the front, and the Pololu slogan, “Engage Your Brain”, on the back.

This adult L (large) T-shirt is royal blue. It features the Pololu logo, composed of a white printed circuit board layout, on the front, and the Pololu slogan, “Engage Your Brain”, on the back.

This connector is a double-row, 26-pin (2×13), straight female header strip designed to match 0.1" male headers.

This connector is a double-row, 34-pin (2×17), straight female header strip designed to match 0.1" male headers.

The Parallax BASIC Stamp Discovery Kit is a complete kit for learning microcontroller programming and basic electronics. The 40+ activities in the included text teach you how to program the BASIC Stamp 2 microcontroller and make simple electronic circuits controlled by the BASIC Stamp. Once you complete the activities and learn the concepts covered, you will have the skills to start making your own electronic inventions!

This extra-tall stackable 40-pin female header features two rows of 20 pins spaced with a 0.1″ (2.54 mm) pitch. It includes three 0.1″-thick spacers for additional clearance, and the extended pins allow multiple units to be stacked as popularized on Arduino shields. The 2×20 size is notably used on the Raspberry Pi Models A+ and B+, and the extra 0.3″ of height allows for stacked boards to clear all of the components on the Raspberry Pi B+.

This stackable 40-pin female header features two rows of 20 pins spaced with a 0.1″ (2.54 mm) pitch. The extended pins allow multiple units to be stacked as popularized on Arduino shields. The 2×20 size is notably used on the Raspberry Pi Models A+ and B+ as well as the Raspberry Pi 2 Model B.

This extra-tall stackable 26-pin female header features two rows of 13 pins spaced with a 0.1″ (2.54 mm) pitch. It includes two 0.1″-thick spacers for additional clearance, and the extended pins allow multiple units to be stacked as popularized on Arduino shields. The 2×13 size is notably used on the Raspberry Pi Models A and B, and the extra 0.2″ of height allows for stacked boards to clear most of the tall components on the Raspberry Pi.

This stackable 26-pin female header features two rows of 13 pins spaced with a 0.1″ (2.54 mm) pitch. The extended pins allow multiple units to be stacked as popularized on Arduino shields. The 2×13 size is notably used on the Raspberry Pi Models A and B.