These wide brackets offer an easy and convenient mounting solution for mini plastic gearmotors. The white plastic bracket clasps securely around the gearmotor, and the mounting tabs capture the nuts for easy installation. These brackets are sold in pairs, and each bracket comes with two M3 screws, two nuts, and a spacer.

DC-DC Step-Up converter U3V40F7 with an output voltage of 7.5 V, an input voltage of 1.3 to 7.5 V and a maximum output current of 4 A. Pololu 4014

This power distribution board is designed specifically for the Romi chassis as a convenient way to access the chassis’s battery power and pass that on the rest of the electronics that make up your robot. Pololu 3541  

Snap-Action Switch with 16.7mm Lever: 3-Pin, SPDT, 5A

A-Star 328P Micro is a small board based on ATmega 328PB microcontroller (Flash, 32 KB, SRAM, 2.5 KB, EEPROM, 1KB, 8 MHz). The system has a loaded bootloader compatible with Arduino. The board has 24 I / O ports (of which 9 pins can be used for PWM outputs and 8 pins for analog inputs). Supply voltage 3.8-15 V. The board works with 3.3 V voltage. Pololu 3162

DRV8834 Low-Voltage Stepper Motor Driver Carrier

Sub-micro analog servo with plastic gear. It has a range of motion of 180°. Pololu 1053

Power HD Standard Servo 3001HB

Step-Down converter with adjustable output voltage from 4.2 V to 15 V and output voltage up to 45 V. It is equipped with reverse voltage protection, input undervoltage lockout, overload and short circuit protection. Pololu 4854

Pololu 5242 with the ACS71240KEXBLT-050B3 chip is a compact current sensor module for precision measurement applications in the ±50 A range. With galvanic isolation, fast response to current changes, and short-circuit detection capability, it is used in power systems, automotive and industrial electronics, and embedded projects. It is ideal for measuring currents in both DC and AC circuits while ensuring safety and accuracy.

The Step-UpU1V10F3 Buck Voltage Regulator module with output voltage 3.3V, input voltage range of 0.5-5.5V and a maximum output current of 1.2A. Pololu 2563

This item is a pair of motor-holding clips for the Romi chassis in white. These clips snap into the main Romi base plate, and then the motors snap into the clips. It is included as part of the white Romi Chassis Kit.

Motor with 37 mm diameter and 65 mm length, 10:1 metal gear, 12 V operating voltage, 0,2 A to 5,5 A power consumption, 1000 RPM speed, 4,9 maximum torque and 64 CPR encoder. Pololu 4758

This black anodized aluminum bracket lets you securely mount typical NEMA 17-size stepper motors to your project. The bracket features several slots and holes for a wide variety of mounting solutions, and four M3×6mm screws are included for securing the motor to the bracket. Pololu 2266

USB Mini-B Connector Breakout Board

Module with 6 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 4406

The FS5106B is a general-purpose, low-cost standard analog servo from FEETECH. Two ball bearings help reduce friction and improve performance. Servo horns and associated hardware are included.

Key specs at 6 V: 0.16 sec/60°, 80 oz-in (6 kg-cm), 41 g

50:1 Micro Metal Gearmotor HP with Extended Motor Shaft

Aluminum Standoff: 1/8" Length, 4-40 Thread, F-F (4-Pack)

Module with 1 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 4401