Hardware Components

• ​Raspberry Pi Zero
• Minibot Hat
• ​2WD Chassis ​$9.59 from GearBest
• ​2x EBL 18650 Lithium-Ion batteries ​$5.67 from Amazon
• ​2x 18650 battery holder ​$1.13 from Amazon ​$1.01 from Banggood
• ​L298N dual motor controller ​$1.56 from GearBest
• ​2x HC-020K Speed sensor module ​$6 from eBay ​$5.59 from Banggood
• ​HC-SR04 ultrasonic rangefinder module ​$1.50 from GearBest ​$1.16 from Banggood
• ​TXB0108 8-channel voltage level converter ​$1.50 from GearBest ​from Adafruit
• ​MPU-9250 9DOF sensor ​$6.77 from GearBest
• ​Raspberry Pi Zero ​$5 from Adafruit
• ​2x20 Male Header Strip ​$0.95 from Adafruit
• ​Raspberry Pi Zero Camera Cable ​$5.95 from Adafruit
• ​Raspberry Pi Camera ​v1 $19.95 from Adafruit ​v2 $24.40 from AliExpress ​v2 $29.95 from Adafruit
• ​MG90S servo motor ​$2.21 from amazon ​$2.30 from banggood
• 3D printed holder for servo+ultrasonic+camera
• Jumper wires: female-to-female
• ​40x jumper wires: male-to-male $1.51 from GearBest

• Drill bits: 7/64, 9/64
• Double sided foam tape
• machine screws, nuts (#4? M2?), washers, standoffs

Alternate chassis/parts

• ​Land Rover5 $35-45 @ Alibaba
• ​T100 aluminum tank chassis $52@banggood
• ​ultrasonic sensor mount $0.98 @ eBay
• ​MP1584EN DC-DC Buck Converter $1.32 from amazon 5v@1.8A (note: 2v6 drop out may be insufficient)

Mounting:

• HC-SR04 ultrasonic: 4x M1 (1mm) self-tapping screws
• Pi camera; 4x M2 (2mm) self-tapping screws