The basis of the Romi chassis dedicated to the construction of small, two-wheeled mobile robots with two-wheel drive. Pololu 3514

Module with 6 QTR type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4106

Module with 5 QTR type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4245

Module with 5 QTRX type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4445

This controller allows independent control of three DC motors using a single I²C bus. It supports motor supply voltages ranging from 4.5 to 44 V and currents up to 0.8 A continuous per channel, making it suitable for a wide range of robotic and mobile applications. I²C communication eliminates the need to generate PWM signals and significantly saves microcontroller pins. The ability to connect multiple controllers on a single bus allows for easy scaling of the system to larger motor counts. Pololu 5083

The stepper motor driver with the MP6500 system, allows the bipolar motor to be supplied with a current of up to 2A per phase, without the use of a heat sink. The system can be supplied with voltage in the range 4.5 ... 35V. Polol 2969

Module with 3 QTRX type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4343

Module with 3 QTRX type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4443

Module with 31 QTR type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4131

Pololu Micro Maestro 1350 is a compact, versatile servo controller with a USB interface and autonomous operation capability, designed for use in robotics, animatronics, and control systems based on PCs or microcontrollers. Thanks to its flexible channel configuration, it can also be used as a sensor interface and I/O expander.

Module with 5 QTRX type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4405

Module with 1 optocoupler type QTRXL with RC (digital) output. It is supplied with the voltage from 2.9 to 5.5 V, detects objects at a distance of up to 80 mm. Pololu 4501

Module with 5 QTRX type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4305

Module with 3 QTR type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4203

Module with 3 QTRX type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4303

DC-DC Step-Down converter module. It has an input voltage from 9 to 45 V, an output voltage of 9 V and a maximum output current of up to 2.9 A. Pololu 4895

Reflection sensor module with 1 QTRXL-HD optocoupler with analogue output. The module is powered by 2.9 ... 5.5V voltage, detects objects at a distance of up to 80mm. Pololu 4641

A module that provides galvanically isolated, bidirectional I²C communication (SDA and SCL lines), protecting devices from incorrect connections and voltage differences. Thanks to the TI ISO1640B chip, it supports data transfer up to 1.7 MHz. Pololu 5390

DC-DC step-up/step-down voltage regulator module that stabilizes the output voltage at 9 V with an input voltage range of 2,9 V – 32 V. The circuit automatically increases or decreases the input voltage, allowing it to power devices even when the supply voltage varies significantly. The regulator can deliver up to 2 A output current (when the input voltage is close to the output voltage) and offers a typical 80–90% efficiency, making it suitable for battery-powered systems and embedded projects. Pololu 2576

Module with 3 QTRX type optocoupler with analog output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4403