Nylon Spacer: 15mm Length, 4mm OD, 2.7mm ID (25-Pack)

Machine Hex Nut: #4-40 (25-pack)

QTR-8A Reflectance Sensor Array

Pololu Wheel 32x7mm Pair - White

Pololu Isolated Solid State Relay/Switch, SPST, 30V, 11A

Pololu Reverse Voltage Protector, 4-60V, 10A

Pololu Reverse Voltage Protector, 4-60V, 12A

Pololu Universal Aluminum Mounting Hub for 4mm Shaft, M3 Holes (2-Pack)

34:1 Metal Gearmotor 25Dx67L mm HP 12V with 48 CPR Encoder

Nylon Spacer: 6mm Length, 5mm OD, 3.3mm ID (50-Pack)

Nylon Spacer: 10mm Length, 4mm OD, 2.7mm ID (25-Pack)

DRV8876 Single Brushed DC Motor Driver Carrier

3pi+ 2040 Robot - Standard Edition (30:1 MP Motors), Assembled

Pololu 5V Step-Up/Step-Down Voltage Regulator S7V7F5

QTRX-MD-16RC Reflectance Sensor Array: 16-Channel, 8mm Pitch, RC Output, Low Current

QTR-MD-06A Reflectance Sensor Array: 6-Channel, 8mm Pitch, Analog Output

QTR-HD-11A Reflectance Sensor Array: 11-Channel, 4mm Pitch, Analog Output

Pololu Ball Caster with 3/8" Metal Ball

Mini MOSFET Slide Switch with Reverse Voltage Protection, SV

Dual MAX14870 Motor Driver for Raspberry Pi (Assembled)

Pololu 7.5V, 2.4A Step-Down Voltage Regulator D24V22F7

Pololu 6V, 2.5A Step-Down Voltage Regulator D24V22F6

Pololu 5V, 2.5A Step-Down Voltage Regulator D24V22F5