Specials!

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Products in category “Specials!”

On sale!
Pololu item #: 1273
Price: $4.49 $17.95
Quantity:

The LSM303DLM combines a digital 3-axis accelerometer and 3-axis magnetometer into a single package that is ideal for making a tilt-compensated compass. The six independent readings, whose sensitivities can be set in the ranges of ±2 to ±8 g and ±1.3 to ±8.1 gauss, are available through an I²C interface. The carrier board operates from 2.6 to 5.5 V and has a 0.1″ pin spacing.

Clearance: This board is being replaced by the newer LSM303DLHC carrier (which is pin-compatible) and LSM303D carrier.

On sale!
Pololu item #: 2125
Price: $6.95 $19.95
Quantity:

This sensor is a carrier/breakout board for the ST L3GD20 three-axis gyroscope, which measures the angular rates of rotation about the roll (X), pitch (Y), and yaw (Z) axes. Angular velocity measurements with a configurable range of ±250°/s, ±500°/s, or ±2000°/s can be read through a digital I²C or SPI interface. The board has a 3.3 V linear regulator and integrated level-shifters that allow it to work over an input voltage range of 2.5–5.5 V, and the 0.1″ pin spacing makes it easy to use with standard solderless breadboards and 0.1″ perfboards.

Clearance: This board is being replaced by the newer L3GD20H carrier.

On sale!
Pololu item #: 2197
Price: $3.95 $6.95
Quantity:

This board is a simple carrier of Allegro’s ±12.5A ACS711 Hall effect-based linear current sensor with overcurrent fault output, which offers a low-resistance (~1.2 mΩ) current path and electrical isolation up to 100 V. This version accepts a bidirectional current input with a magnitude up to 12.5 A and outputs a proportional analog voltage centered at Vcc/2 with a typical error of ±5%. It operates from 3 V to 5.5 V, so it can interface directly to both 3.3 V and 5 V systems.

On sale!
Pololu item #: 2198
Price: $3.95 $6.95
Quantity:

This board is a simple carrier of Allegro’s ±25A ACS711 Hall effect-based linear current sensor with overcurrent fault output, which offers a low-resistance (~1.2 mΩ) current path and electrical isolation up to 100 V. This version accepts a bidirectional current input with a magnitude up to 25 A and outputs a proportional analog voltage centered at Vcc/2 with a typical error of ±5%. It operates from 3 V to 5.5 V, so it can interface directly to both 3.3 V and 5 V systems.

On sale!
Pololu item #: 2464
Price: $5.95 $9.95
Quantity:

The GP2Y0A41SK0F Sharp analog distance sensor features a detection range of 1.5″ to 12″ (4 cm to 30 cm). The shorter range gives you higher resolution measurements, and the lower 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.

On sale!
Pololu item #: 2126
Price: $4.95 $7.95
Quantity:

This carrier for ST’s LPS331AP digital barometer measures pressures from 260 mbar to 1260 mbar (26 kPa to 126 kPa) with absolute pressure accuracy over temperature down to ±2 mbar (0.2 kPa) and typical RMS noise of 0.02 mbar (0.002 kPa) in high-resolution mode. These pressures can easily be converted to altitudes. The board has a 3.3 V linear regulator and integrated level shifters that allow it to work over an input voltage range of 2.5 V to 5.5 V, and the 0.1″ pin spacing makes it easy to use with standard solderless breadboards and 0.1″ perfboards. The sensor offers I²C and SPI interfaces.

On sale!
Pololu item #: 1659
Price: $249.95 $399.95
Quantity:

Learn electronics with the Elenco 500-In-One Electronic Project Lab! This kit includes everything you need to get started building your own electronic circuits. The largest of the project labs, this kit contains all the fun and education of the smaller kits, and takes your education a step further by teaching its users about microcontrollers and programming. This kit includes the six required AA batteries.

On sale!
Pololu item #: 1137
Price: $8.95 $13.95
Quantity:

The GP2Y0A02 is the longest-range optical distance sensor we carry, featuring a detection range of 8″ to 60″ (20 cm to 150 cm). The high maximum detection distance makes this sensor a viable alternative to sonar in some applications. The distance is indicated by an analog voltage, making this sensor very easy to use.

On sale!
Pololu item #: 2268
Price: $32.95 $49.95
Quantity:

This NEMA 17-size hybrid bipolar stepping motor has an integrated 28 cm (11″) 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).

On sale!
Pololu item #: 1248
Price: $8.95 $12.95
Quantity:

The SM-S4303R is a standard-sized servo that has been built by SpringRC specifically for continuous rotation, making it an easy way to get your robot moving. It features two ball bearings on the output shaft for reduced friction, and it offers easy access to the rest-point adjustment potentiometer. This is the most popular continuous rotation servo we carry.

Key specs at 6 V: 54 RPM (no-load), 71 oz-in (5.1 kg-cm), 41 g

On sale!
Pololu item #: 331
Price: $3.99 $5.75
Quantity:

This printed circuit board is designed for building your own circuits based on Microchip Technology’s line of 8-pin PIC microcontrollers. The board holds a PIC and the basic circuitry necessary to run it. The rest of the board is available for your custom circuits.

On sale!
Pololu item #: 136
Price: $6.95 $9.95
Quantity:

The GP2Y0A21 Sharp distance sensor is a great way to add obstacle avoidance or motion sensing to your robot or any other project. With a detection range of 4″ to 32″ (10 cm to 80 cm) and an analog voltage indicating the distance, this sensor is very easy to use.

On sale!
Pololu item #: 1200
Price: $13.95 $19.95
Quantity:

This NEMA 17-size hybrid stepping motor can be used as a unipolar or bipolar stepper motor and has a 1.8° step angle (200 steps/revolution). Each phase draws 1.2 A at 4 V, allowing for a holding torque of 3.2 kg-cm (44 oz-in).

On sale!
Pololu item #: 2146
Price: $34.95 $49.95
Quantity:

The 8312TG is a premium standard-size servo from Power HD that offers a great combination of torque and speed. It has a coreless motor with an all-metal (titanium-shielded aluminum) gear train, digital control electronics, and two ball bearings on the output shaft. Servo horns and associated hardware are included.

Key specs at 6 V: 0.10 sec/60°, 190 oz-in (13.5 kg-cm), 57 g.

On sale!
Pololu item #: 2728
Price: $4.95 $6.95
Quantity:

This force-sensing resistor (FSR) from Interlink Electronics is a passive component that exhibits a decrease in resistance when there is an increase in the force applied to the 0.58″-diameter (1.5 cm) active area, allowing you to create a sensor that is able to detect force or pressure. With a force sensitivity range of a few grams to a few kilograms, this sensor is optimized for use in human touch control applications.

On sale!
Pololu item #: 1695
Price: $4.25 $5.95
Quantity:

This force-sensing resistor (FSR) from Interlink Electronics is a passive component that exhibits a decrease in resistance when there is an increase in the force applied to the 0.2″-diameter (0.5 cm) active area, allowing you to create a sensor that is able to detect force or pressure. With a force sensitivity range of a few grams to a few kilograms, this sensor is optimized for use in human touch control applications.

On sale!
Pololu item #: 2390
Price: $13.95 $19.50
Quantity:

With possible gear ratios of 39.6:1, 47.6:1, 61.7:1, and 74:1, the Tamiya 72007 4-Speed High-Power Gearbox is well-suited for most applications that require a balance of speed and torque.

On sale!
Pololu item #: 2391
Price: $13.95 $19.50
Quantity:

The primary feature of this gearbox is a worm gear, which locks the output shaft when the motor is not turning. Its high gear ratios of 84:1, 216:1, 555.4:1, and 1428.2:1 make this gearbox appropriate for small walking robots, lifting mechanisms, and other applications where high torque is desired.

On sale!
Pololu item #: 1645
Price: $5.75 $7.95
Quantity:

This force-sensing resistor (FSR) from Interlink Electronics is a passive component that exhibits a decrease in resistance when there is an increase in the force applied to the 1.5″ × 1.5″ (4 cm × 4 cm) active area, allowing you to create a sensor that is able to detect force or pressure. With a force sensitivity range of a few grams to a few kilograms, this sensor is optimized for use in human touch control applications.

On sale!
Pololu item #: 330
Price: $11.95 $16.50
Quantity:

This round printed circuit board is a general-purpose prototyping board for developing your own custom electronics designs. Slightly larger than a CD, this PCB also fits our round robot chassis perfectly. With 1,780 holes, the board has ample space for most projects.

On sale!
Pololu item #: 1682
Price: $10.95 $15.00
Quantity:

Tamiya’s 8-speed mini motor gearbox features a more compact 030-form-factor brushed DC motor driving a single gear train that can be assembled to have one of eight gear ratios: 7.5:1, 9.5:1, 15.7:1, 19.9:1, 32.9:1, 41.8:1, 79.1:1, or 87.8:1.

On sale!
Pololu item #: 1683
Price: $10.95 $15.00
Quantity:

Tamiya’s 12-speed multi-ratio mini motor gearbox features a more compact 030-form-factor brushed DC motor driving a single gear train that can be assembled to have one of twelve gear ratios: 4.6:1, 5.1:1, 9.7:1, 10.8:1, 20.4:1, 22.6:1, 42.8:1, 47.5:1, 89.9:1, 99.8:1, 188.7:1, or 209.7:1.

On sale!
Pololu item #: 2303
Price: $109.95 $149.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 2-inch stroke and a built-in potentiometer for position feedback.

On sale!
Pololu item #: 2305
Price: $109.95 $149.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 4-inch stroke and a built-in potentiometer for position feedback.

On sale!
Pololu item #: 2307
Price: $109.95 $149.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 6-inch stroke and a built-in potentiometer for position feedback.

On sale!
Pololu item #: 2309
Price: $109.95 $149.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has an 8-inch stroke and a built-in potentiometer for position feedback.

On sale!
Pololu item #: 2311
Price: $109.95 $149.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 10-inch stroke and a built-in potentiometer for position feedback.

On sale!
Pololu item #: 2313
Price: $109.95 $149.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 12-inch stroke and a built-in potentiometer for position feedback.

On sale!
Pololu item #: 2319
Price: $109.95 $149.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 5:1 reduction gearbox that gives the actuator a dynamic load rating of 34 lbs (15 kg) and a maximum speed of 1.7 in/s (4.3 cm/s), and it is rated to withstand up to 450 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 4-inch stroke and a built-in potentiometer for position feedback.

On sale!
Pololu item #: 2327
Price: $109.95 $149.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 5:1 reduction gearbox that gives the actuator a dynamic load rating of 34 lbs (15 kg) and a maximum speed of 1.7 in/s (4.3 cm/s), and it is rated to withstand up to 450 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 12-inch stroke and a built-in potentiometer for position feedback.

On sale!
Pololu item #: 114
Price: $9.25 $12.50
Quantity:

Tamiya’s double gearbox packs two independent gear trains into a compact and affordable package that is great for small mobile robots. Each side can be assembled to have one of four gear ratios: 12.7:1, 38:1, 115:1, or 344:1.

On sale!
Pololu item #: 61
Price: $8.95 $12.00
Quantity:

Tamiya’s twin-motor gearbox consists of two independent brushed DC motors and gearboxes in one compact housing, making it perfect for small robots. You can assemble the gearboxes to have a 58:1 or a 204:1 gear ratio.

On sale!
Pololu item #: 2196
Price: $13.45 $18.00
Quantity:

This gearbox features a low-current brushed DC motor, which is great for projects where you want to keep your power consumption to a minimum. Its single gear train can be assembled to have one of three gear ratios: 12.7:1, 38.2:1, or 114.7:1.

On sale!
Pololu item #: 1463
Price: $4.45 $5.95
Quantity:

This UL-listed 9 W, “wall wart”-style switching power adapter supplies up to 1 A at a regulated 9 VDC. The AC adapter works with input voltages of 100 – 240 VAC and has a 1.5 m (5 ft) DC power cord that is terminated by a center-positive, 5.5 × 2.1 mm barrel connector.

On sale!
Pololu item #: 1461
Price: $7.45 $9.95
Quantity:

This UL-listed 15 W, “wall wart”-style switching power adapter supplies up to 3 A at a regulated 5 VDC. The AC adapter works with input voltages of 100 – 240 VAC and has a 1.5 m (5 ft) DC power cord that is terminated by a center-positive, 5.5 × 2.1 mm barrel connector.

On sale!
Pololu item #: 1464
Price: $7.45 $9.95
Quantity:

This UL-listed 27 W, “wall wart”-style switching power adapter supplies up to 3 A at a regulated 9 VDC. The AC adapter works with input voltages of 100 – 240 VAC and has a 1.5 m (5 ft) DC power cord that is terminated by a center-positive, 5.5 × 2.1 mm barrel connector.

On sale!
Pololu item #: 2729
Price: $8.95 $11.95
Quantity:

This force-sensing linear potentiometer (FSLP) from Interlink Electronics is a passive component with resistances that depend on the magnitude and location of the force applied at some point along the 1.4″ (3.6 cm) active length of the strip, making it easy to add novel touch interfaces or tactile sensors to your project. An external resistor (typically 4.7 kΩ to 10 kΩ) is required but not included.

On sale!
Pololu item #: 1205
Price: $11.95 $15.95
Quantity:

This NEMA 11-size hybrid bipolar stepping motor has a 1.8° step angle (200 steps/revolution). Each phase draws 670 mA at 3.5 V, allowing for a holding torque of 600 g-cm (8.3 oz-in).

On sale!
Pololu item #: 1465
Price: $13.45 $17.95
Quantity:

This UL-listed 45 W desktop-style switching power adapter supplies up to 5 A at a regulated 9 VDC from input voltages of 100 – 240 VAC. It includes a 1.5 m (5 ft) AC power cord terminated by a three-prong, US-style plug and has a 1.5 m (5 ft) DC power cord that is terminated by a center-positive, 5.5 × 2.1 mm barrel connector.

On sale!
Pololu item #: 2302
Price: $89.95 $119.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 2-inch stroke and no potentiometer.

On sale!
Pololu item #: 2304
Price: $89.95 $119.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 4-inch stroke and no potentiometer.

On sale!
Pololu item #: 2306
Price: $89.95 $119.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 6-inch stroke and no potentiometer.

On sale!
Pololu item #: 2308
Price: $89.95 $119.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 8-inch stroke and no potentiometer.

On sale!
Pololu item #: 2310
Price: $89.95 $119.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 10-inch stroke and no potentiometer.

On sale!
Pololu item #: 2312
Price: $89.95 $119.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 20:1 reduction gearbox that gives the actuator a dynamic load rating of 110 lbs (50 kg) and a maximum speed of 0.5 in/s (1.3 cm/s), and it is rated to withstand up to 500 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 12-inch stroke and no potentiometer.

On sale!
Pololu item #: 2326
Price: $89.95 $119.95
Quantity:

This 12 V linear actuator can be used in a variety of heavy-duty applications. The motor has 5:1 reduction gearbox that gives the actuator a dynamic load rating of 34 lbs (15 kg) and a maximum speed of 1.7 in/s (4.3 cm/s), and it is rated to withstand up to 450 lbs when not moving. Limit switches at each end make the actuator easy to control over its full range of motion, and the worm drive ensures that the shaft will hold its position even when unpowered. This version has a 12-inch stroke and no potentiometer.

On sale!
Pololu item #: 68
Price: $8.29 $11.00
Quantity:

This gearbox has four possible gear ratios, including the highest gear ratio of Tamiya’s gearbox series, 5402:1. The other options are 126:1, 441:1, and 1543:1. This gearbox also features a worm gear, which locks the output shaft when the motor is not turning.

On sale!
Pololu item #: 2751
Price: $7.50 $9.95
Quantity:

This protective case for the Raspberry Pi (not included) consists of a clear top that latches onto an opaque black bottom piece when the two are pushed together.

Clearance! We have put this product on clearance and will discontinue it when the remaining stock is sold.

On sale!
Pololu item #: 1699
Price: $44.95 $58.95
Quantity:

The Arduino Mega 2560 R3, the successor to the Arduino Mega, is a microcontroller board based on a ATmega2560 AVR microcontroller. It has 70 digital input/output pins (of which 15 can be used as PWM outputs and 16 can be used as analog inputs), a 16 MHz resonator, a USB connection, a power jack, an in-circuit system programming (ICSP) header, and a reset button. The Arduino has an extensive support community, which makes it a very easy way to get started working with embedded electronics.

On sale!
Pololu item #: 2740
Price: $99.95 $129.95
Quantity:

The UM7-LT 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.

On sale!
Pololu item #: 1694
Price: $28.50 $37.00
Quantity:

Tamiya’s wall-hugging mouse is a fun and easy-to-build kit that’s great for new robot enthusiasts, and it can serve as a unique, hackable robot chassis for more advanced users. The mouse has no digital electronics; rather, a simple wire bumper along its side directs current to one of two motors to keep the mouse moving along the wall. The mouse features a hard plastic shell and runs on one alkaline AA battery.

On sale!
Pololu item #: 2388
Price: $44.95 $58.00
Quantity:

Great for learning the basics of gears and linkages, this Tamiya kit contains all the parts necessary to make a remote controlled chassis with a ping pong ball collecting appendage. The instructions include directions for assembling the kit with either an arm, bucket, or shovel, and they include directions for a ping pong ball collecting competition.

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Pololu item #: 2465
Price: $6.95 $8.95
Quantity:

This small digital distance sensor detects objects between 0.5 cm and 15 cm (0.2″ and 6″) away. With its quick response time, small size, low current draw, and short minimum sensing distance, this sensor is a good choice for non-contact, close-proximity object detection, and our compact carrier PCB makes it easy to integrate into your project.

On sale!
Pololu item #: 1462
Price: $13.45 $16.95
Quantity:

This UL-listed 25 W desktop-style switching power adapter supplies up to 5 A at a regulated 5 VDC from input voltages of 100 – 240 VAC. It includes a 1.5 m (5 ft) AC power cord terminated by a three-prong, US-style plug and has a 1.5 m (5 ft) DC power cord that is terminated by a center-positive, 5.5 × 2.1 mm barrel connector.

On sale!
Pololu item #: 74
Price: $13.95 $17.50
Quantity:

This versatile, high-efficiency gearbox lets you build one of the following gear ratios: 11.6:1, 29.8:1, 76.5:1, 196.7:1, 505.9:1, and 1300.9:1. Whatever your application, chances are that one of the configurations will do the job.

On sale!
Pololu item #: 120
Price: $31.95 $39.95
Quantity:

Frustrated by those cheap, low-voltage motors that require too much current? Here’s the answer: a low-voltage motor controller designed specifically for those toy motors. With all of the convenience of the Pololu dual serial motor controllers and the added ability to deliver 5 amps per motor with no minimum motor voltage, this dual serial motor controller has you covered.

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Pololu item #: 62
Price: $6.50 $8.00
Quantity:

The Tamiya 70111 sports tire set contains two attractive racing-style wheels, each 56 mm in diameter and 25 mm wide. These wheels are compatible with all Tamiya gearbox kits.

On sale!
Pololu item #: 64
Price: $3.60 $4.40
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The two extremely springy tires in the Tamiya 70096 off-road tires set are about 50 mm in diameter and 30 mm wide. Use these if you want your robot to have a soft, air-cushioned ride across rough terrain. (Compatible with the Tamiya gearbox numbers 70093, 70097, 70103, and 70110, 70167, and 70168).

On sale!
Pololu item #: 2473
Price: $225.00 $274.95
Quantity:

The Arduino Robot is the first official Arduino on wheels. The robot chassis is comprised of two serially connected platforms, each of which features an ATmega32U4 and acts as an independent Arduino board. The upper platform, called the Control Board, includes a five-button keypad, knob potentiometer, color LCD, SD card reader (with SD card), speaker, and digital compass. The lower platform, or Motor Board, controls the two integrated DC motors and includes five reflectance sensors that can be used for line following or edge detection. The robot ships fully assembled and includes a USB cable, rechargable batteries, and a wall adapter for charging.

On sale!
Pololu item #: 76
Price: $31.95 $39.00
Quantity:

The Line Tracing Snail is an excellent, low-cost robot for a new robotics enthusiast that has no previous experience with robots or electronics. All electronics are completely pre-assembled, and mechanical assembly is very straightforward. The snail has two speeds, and for added fun and entertainment, the eye stalks wiggle back and forth as the robot runs.

On sale!
Pololu item #: 2469
Price: $19.95 $27.95
Quantity:

The Pololu AltIMU-10 v3 is an inertial measurement unit (IMU) and altimeter that features the same L3GD20H gyro and LSM303D accelerometer and magnetometer as the MinIMU-9 v3, and adds an LPS331AP digital barometer. An I²C interface accesses ten independent pressure, rotation, acceleration, and magnetic measurements that can be used to calculate the sensor’s altitude and absolute orientation. The board operates from 2.5 to 5.5 V and has a 0.1″ pin spacing.

Clearance: This board is being replaced by the newer AltIMU-10 v4.

On sale!
Pololu item #: 2154
Price: $36.95 $44.95
Quantity:

The mbed NXP LPC11U24 is an easy-to-use MCU development board designed for rapid prototyping. At its heart is a low-power 32-bit ARM Cortex-M0 processor running at 48 MHz with 32 KB flash and 8 KB RAM, which makes it more capable than popular, similarly-priced 8-bit prototyping alternatives. A comprehensive firmware library and plenty of sample code help you get your program up and running quickly, and a free online IDE and C++ compiler means that no software installation is required. Downloading programs is as simple as using a USB flash drive (no external programmer is necessary).

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Pololu item #: 2474
Price: $9.95 $11.95
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The GP2Y0A60SZ distance sensor from Sharp offers a wide detection range of 4″ to 60″ (10 cm to 150 cm) and a high update rate of 60 Hz. The distance is indicated by an analog voltage, so only a single analog input is required to interface with the module. The sensor ships installed on our compact carrier board, which makes it easy to integrate this great sensor into your project, and is configured for 5V mode.

On sale!
Pololu item #: 2476
Price: $9.95 $11.95
Quantity:

The GP2Y0A60SZ distance sensor from Sharp offers a wide detection range of 4″ to 60″ (10 cm to 150 cm) and a high update rate of 60 Hz. The distance is indicated by an analog voltage, so only a single analog input is required to interface with the module. The sensor ships installed on our compact carrier board, which makes it easy to integrate this great sensor into your project, and is configured for 3V mode.

On sale!
Pololu item #: 726
Price: $24.95 $29.95
Quantity:

This compact sonar range finder by Maxbotix detects objects from 0 to 6.45 m (21.2 ft) with a resolution of 2.5 cm (1") for distances beyond 15 cm (6"). Unlike other sonar range finders, the LV-MaxSonar has virtually no dead zone: it can detect even small objects up to and touching the front sensor face!

The EZ0, EZ1, EZ2, EZ3, and EZ4 versions have progressively narrower beam angles.

On sale!
Pololu item #: 792
Price: $24.95 $29.95
Quantity:

This compact sonar range finder by Maxbotix detects objects from 0 to 6.45 m (21.2 ft) with a resolution of 2.5 cm (1") for distances beyond 15 cm (6"). Unlike other sonar range finders, the LV-MaxSonar has virtually no dead zone: it can detect even small objects up to and touching the front sensor face!

The EZ0, EZ1, EZ2, EZ3, and EZ4 versions have progressively narrower beam angles.

On sale!
Pololu item #: 793
Price: $24.95 $29.95
Quantity:

This compact sonar range finder by Maxbotix detects objects from 0 to 6.45 m (21.2 ft) with a resolution of 2.5 cm (1") for distances beyond 15 cm (6"). Unlike other sonar range finders, the LV-MaxSonar has virtually no dead zone: it can detect even small objects up to and touching the front sensor face!

The EZ0, EZ1, EZ2, EZ3, and EZ4 versions have progressively narrower beam angles.

On sale!
Pololu item #: 794
Price: $24.95 $29.95
Quantity:

This compact sonar range finder by Maxbotix detects objects from 0 to 6.45 m (21.2 ft) with a resolution of 2.5 cm (1") for distances beyond 15 cm (6"). Unlike other sonar range finders, the LV-MaxSonar has virtually no dead zone: it can detect even small objects up to and touching the front sensor face!

The EZ0, EZ1, EZ2, EZ3, and EZ4 versions have progressively narrower beam angles.

On sale!
Pololu item #: 106
Price: $7.95 $9.50
Quantity:

The Tamiya 70100 Track and Wheel Set allows for a large degree of adjustability and creativity in designing your own robot. The set includes a variety of track lengths, sprockets, and wheels that are compatible with multiple Tamiya products.

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Pololu item #: 2752
Price: $33.95 $39.95
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The Raspberry Pi is a credit card-sized computer with an ARM processor that can run Linux. This item is the Raspberry Pi Model B+, which has 512 MB of RAM, an Ethernet port, HDMI output, audio output, RCA composite video output (through the 3.5 mm jack), four USB ports, and 0.1″-spaced pins that provide access to general purpose inputs and outputs (GPIO). The Raspberry Pi requires a microSD card with an operating system on it (not included). The Raspberry Pi is very popular, with lots of example projects and information available online.

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Pololu item #: 65
Price: $4.10 $4.80
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The Tamiya 70101 truck tire set contains four 36 mm-diameter wheels with hard, rubber, 16 mm-wide treads. Our small round robot chassis is designed to use a pair of these wheels, which are great for making small robots! (Compatible with the Tamiya gearbox numbers 70093, 70097, 70103, and 70110, 70167, and 70168).

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Pololu item #: 118
Price: $7.55 $8.75
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The single gearbox is perfect if you like the gear ratio options of the 70168 double gearbox but need just one motor or added flexibility in positioning multiple output shafts. Available gear ratios are: 12.7:1, 38:1, 115:1, or 344:1.

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Pololu item #: 70
Price: $15.99 $18.50
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The first in Tamiya’s “high efficiency” series, the planetary gearbox features two 4:1 and two 5:1 stages that can be combined in any way you like—you can even combine two kits to get really huge gear ratios. The output is always conveniently on the same axis as the motor shaft. Available gear ratios are 4:1, 5:1, 16:1, 20:1, 25:1, 80:1, 100:1, and 400:1.

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Pololu item #: 2314
Price: $12.95 $14.93
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This machined aluminum bracket allows the Concentric LD series linear actuators to be mounted to a structure. Complete mounting hardware is included. Two brackets are required for mounting each actuator.

On sale!
Pololu item #: 69
Price: $7.59 $8.75
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Unlike the other gearboxes in Tamiya’s series, the universal gearbox has a thin metal frame, making it the smallest Tamiya gearbox. The final two gears are metal, making for a tough output. A worm gear allows for the high gear ratio options of 101:1, 269:1, and 719:1.

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Pololu item #: 1127
Price: $3.45 $3.95
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The RW2i rubber wheel features an internal set screw ideal for designs with space constraints. The 1.23-inch diameter wheel by Solarbotics is made for 3 mm diameter output shafts. These wheels are sold individually, NOT in pairs.

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Pololu item #: 71
Price: $10.95 $12.50
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The high-speed gearbox can be assembled in 11.6:1 and 18:1 gear ratios. This high-efficiency gearbox is therefore suited for very fast vehicles or other fast mechanisms that do not require high torque.

On sale!
Pololu item #: 72
Price: $10.95 $12.50
Quantity:

With possible gear ratios of 41.7:1 and 64.8:1, the high-power gearbox is well-suited for most vehicles that require a balance of speed and torque.

On sale!
Pololu item #: 73
Price: $10.95 $12.50
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The primary feature of this high-efficiency gear box is a worm gear, which locks the output shaft whenever the motor is not turning. The high gear ratios of 216:1 or 336:1 make this gearbox appropriate for small walking robots, lifting mechanisms, and other applications where high torque is desired.

On sale!
Pololu item #: 762
Price: $26.95 $29.95
Quantity:

This discounted combination of Tamiya’s twin-motor gearbox, ball caster, and truck tires is meant for use with two Pololu round robot chassis.