Bill of Materials (BOM)

Overview

This page provides a comprehensive list of all components required to build the driverless kart. Component data is now stored in YAML files within each assembly folder, following the project structure.

New BOM Management System

Components are now managed via separate YAML files in each assembly folder. The folder structure represents the BOM tree itself, eliminating synchronization issues.

How to Add Components to BOM

Adding a new component is simple:

1. Find the right folder - Navigate to the appropriate assembly folder (e.g., docs/assembly/steering/)
2. Edit the bom.yaml file - Open the bom.yaml file in that folder
3. Add your component - Copy an existing component entry and modify it with your new component's details
4. Include key information:
5. id: unique identifier (e.g., "motor_controller_v2")
6. part_number: manufacturer part number
7. description: what it is
8. quantity: how many needed
9. unit_cost: price per unit
10. suppliers: where to buy it (name, url)

That's it! The component will automatically appear in BOM reports.

💰 Cost Summary

Assembly	Components	Total Cost
Electronics	5	€1546.00
Power	4	€529.00
Powertrain	2	€152.46
Powertrain_Fasteners	5	€4.70
Powertrain_Transmission	3	€40.00
Sensors	2	€450.00
Steering	4	€152.00
Steering_Fasteners	4	€3.05
TOTAL	29	€2877.21
## BOM Structure

The BOM is organized by assembly with YAML files containing detailed component specifications:

docs/assembly/
├── powertrain/
│   ├── bom.yaml              # Motor, throttle pedal
│   ├── transmission/bom.yaml # Chain, sprockets
│   └── fasteners/bom.yaml    # All powertrain fasteners
├── steering/
│   ├── bom.yaml              # H-bridge, motor, sensor, coupling
│   └── fasteners/bom.yaml    # All steering fasteners
├── electronics/
│   ├── bom.yaml              # Orin, ESP32, DAC, level shifter
│   └── power/bom.yaml        # Battery cells, BMS, auxiliary battery
└── sensors/bom.yaml          # ZED2 camera, YOLOv5 models

🔍 Searchable Parts Database

Search: Assembly: All Electronics Power Powertrain Powertrain_Fasteners Powertrain_Transmission Sensors Steering Steering_Fasteners Status: All Active Needs Replacement Needs Specification Pending Category: All Auxiliary Battery Battery Cells Bms Camera Computer Dac Electronics Fasteners Level Shifter Mechanical Microcontroller Motor Pcb Sensor Software Transmission

ID ↕	Part # ↕	Description ↕	Assembly ↕	Category ↕	Qty ↕	Cost ↕	Status ↕	Critical ↕
nvidia_jetson_agx_orin	JETSON-AGX-ORIN-DEVKIT	NVIDIA Jetson AGX Orin Development Kit	electronics	Computer	1	EUR 1500.00	Active	Essential
esp32_wroom_32	ESP32-WROOM-32	ESP32 microcontroller module (Kart Medulla)	electronics	Microcontroller	1	EUR 3.50	Active	Essential
orin_adapter_board	CUSTOM-ORIN-ADAPTER-V1.0	Custom Orin adapter board v1.0	electronics	Pcb	1	EUR 25.00	Active	Essential
dac_module	TBD-DAC-MODULE	Digital to Analog Converter module	electronics	Dac	1	EUR 15.00	Needs Specification	Essential
i2c_level_shifter	TXS0108E	8-bit bidirectional voltage-level translator	electronics	Level Shifter	1	EUR 2.50	Pending	Essential
molicel_p42a_cells	P42A	Molicel P42A 21700 lithium-ion cells	power	Battery Cells	52	EUR 4.50	Active	Essential
jiabaida_bms_100a	JBD-SP22S003B	Jiabaida Smart BMS 100A with Bluetooth and UART	power	Bms	1	EUR 85.00	Active	Essential
car_battery_12v	12V-CAR-BATTERY	12V automotive battery for sensors	power	Auxiliary Battery	1	EUR 60.00	Active	Essential
battery_pack_assembly	CUSTOM-PACK-13S4P	Custom 13S4P battery pack assembly	power	Mechanical	1	EUR 150.00	Active	Essential
kunray_my1020_motor	MY1020	Brushless DC motor with controller	powertrain	Motor	1	EUR 150.00	Active	Essential
throttle_pedal_ss49e	THROTTLE-PEDAL-HALL	Throttle pedal with SS49E Hall sensor	powertrain	Sensor	1	EUR 2.46	Active	Essential
motor_mount_bolts	M8x30-HEX	Motor mount bolts	powertrain_fasteners	Fasteners	4	EUR 0.50	Active	Essential
motor_mount_nuts	M8-NUT	Motor mount nuts	powertrain_fasteners	Fasteners	4	EUR 0.15	Active	Essential
front_sprocket_bolts	M6x16-HEX	Front sprocket bolts	powertrain_fasteners	Fasteners	3	EUR 0.30	Active	Essential
chain_tensioner_hardware	M6x20-HEX	Chain tensioner hardware	powertrain_fasteners	Fasteners	2	EUR 0.35	Active	Essential
throttle_pedal_mount_bolts	M5x12-HEX	Throttle pedal mount bolts	powertrain_fasteners	Fasteners	2	EUR 0.25	Active	Essential
iris_219_chain	IRIS-219-100	IRIS 219 pitch gold chain	powertrain_transmission	Transmission	1	EUR 15.00	Active	Essential
corona_219_aluminum	CORONA-219-ALU	219 pitch aluminum rear sprocket	powertrain_transmission	Transmission	1	EUR 20.00	Needs Replacement	Essential
custom_219_pinion	CUSTOM-219-PINION	Custom 219 pitch front sprocket	powertrain_transmission	Transmission	1	EUR 5.00	Active	Essential
stereolabs_zed2	ZED2	Stereolabs ZED2 stereo vision camera	sensors	Camera	1	EUR 450.00	Active	Essential
yolov5_detection_model	CUSTOM-YOLOV5-CONES	Custom YOLOv5 model for cone detection	sensors	Software	1	EUR 0.00	Active	Essential
cytron_md25hv	MD25HV	25A high voltage H-bridge motor driver (7V-58V)	steering	Electronics	1	EUR 55.00	Active	Essential
steering_motor_24v	STEERING-24V-MOTOR	24V DC steering motor (operated at 12V)	steering	Motor	1	EUR 80.00	Active	Essential
as5600_angle_sensor	AS5600	Hall effect rotary position sensor	steering	Sensor	1	EUR 2.00	Active	Essential
steering_coupling	STEERING-COUPLING-10MM	Motor to steering shaft coupling	steering	Mechanical	1	EUR 15.00	Active	Essential
coupling_motor_bolts	M6x20-HEX	Coupling to motor bolts	steering_fasteners	Fasteners	4	EUR 0.35	Active	Essential
sensor_mount_screws	M3x8-HEX	Sensor mounting screws	steering_fasteners	Fasteners	2	EUR 0.20	Active	Essential
motor_bracket_bolts	M6x30-HEX	Motor bracket bolts	steering_fasteners	Fasteners	2	EUR 0.40	Active	Essential
main_coupling_bolt	M8x25-HEX	Main coupling bolt	steering_fasteners	Fasteners	1	EUR 0.45	Active	Critical

Assembly Overview

🔧 Powertrain Assembly

Components: Motor, transmission system, throttle control - Main Components: Powertrain BOM - Transmission: Transmission BOM - Fasteners: Powertrain Fasteners BOM - Documentation: Powertrain Assembly

Key Components: - Kunray MY1020 3000W motor (€150.00) - IRIS 219 chain and sprocket system (€40.00) - Hall effect throttle pedal (€2.46)

🎮 Steering Assembly

Components: Motor, sensor, H-bridge, coupling - Main Components: Steering BOM - Fasteners: Steering Fasteners BOM - Documentation: Steering Assembly

Key Components: - Cytron MD30C H-bridge (€45.00) - AS5600 magnetic angle sensor (€2.00) - 24V DC steering motor (€80.00)

💻 Electronics Assembly

Components: Computing, control, communication - Main Components: Electronics BOM - Documentation: Electronics Assembly

Key Components: - NVIDIA Jetson AGX Orin (€1500.00) - ESP32 WROOM-32 microcontroller (€3.50) - Custom Orin adapter board (€25.00)

⚡ Power Assembly

Components: Main battery pack, BMS, auxiliary power - Main Components: Power BOM - Documentation: Power Assembly

Key Components: - 52x Molicel P42A cells in 13S4P (€234.00) - Jiabaida Smart BMS 100A (€85.00) - 12V auxiliary battery (€60.00)

📷 Sensors Assembly

Components: Vision system, AI models - Main Components: Sensors BOM - Documentation: Sensors Assembly

Key Components: - Stereolabs ZED2 stereo camera (€450.00) - Custom YOLOv5 cone detection model

Estimated Project Costs

Assembly	Estimated Cost	Key Items
Powertrain	€195	Motor (€150), transmission (€40), fasteners (€5)
Steering	€135	H-bridge (€45), motor (€80), sensor (€2), fasteners (€8)
Electronics	€1530	Orin computer (€1500), ESP32 (€4), adapter (€25)
Power	€380	Li-ion cells (€234), BMS (€85), 12V battery (€60)
Sensors	€450	ZED2 camera (€450)
Total	€2690	Excludes chassis, wiring, mechanical hardware

Cost Estimates

Prices are approximate and subject to change. Always verify current pricing from suppliers.

Component Status

✅ Active Components

Currently used and functional in the kart.

⚠️ Needs Replacement

Known to be damaged or worn: - 219 aluminum rear sprocket (damaged from incompatible chain use)

🔧 Custom Components

Require fabrication: - Custom 219 front sprocket (laser cut for 10mm shaft) - Orin adapter board (EasyEDA design available) - Battery pack assembly (professional assembly recommended)

Supplier Information

Primary Suppliers

• Electronics: Mouser, Digi-Key, Adafruit
• Karting Parts: KPS Racing
• Batteries: Authorized Molicel distributors
• Vision Systems: Stereolabs
• General Components: AliExpress, Amazon (for non-critical parts)

Quality Guidelines

• ✅ Use official distributors for critical electronic components
• ✅ Verify specifications before ordering
• ⚠️ AliExpress/Amazon acceptable for mechanical parts and sensors
• ❌ Avoid counterfeit components for safety-critical systems

Assembly Priority

1. Power System - Battery pack, BMS, charging setup
2. Core Electronics - Orin computer, ESP32 microcontroller
3. Sensors - ZED2 camera, angle sensors
4. Propulsion - Motor, controller, transmission
5. Steering - Motor, H-bridge, coupling
6. Integration - Wiring, mounting, calibration

Working with YAML BOM Files

Adding New Components

1. Locate the appropriate assembly folder
2. Edit the bom.yaml file
3. Follow the existing structure for consistency
4. Include all required fields: id, part_number, description, quantity, cost, suppliers

YAML File Structure

assembly: "assembly_name"
description: "Assembly description"
components:
  - id: "unique_component_id"
    part_number: "MANUFACTURER-PART-NUMBER"
    description: "Component description"
    quantity: 1
    unit_cost: 0.00
    currency: "EUR"
    status: "active"
    criticality: "essential"
    suppliers:
      - name: "Supplier Name"
        url: "https://supplier.com/product"
        verified: true
    specifications:
      key: "value"
    notes: "Additional information"

Future Automation

A BOM aggregation script is planned to automatically generate: - Complete cost summaries - Supplier contact lists - Component status reports - Assembly checklists

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This BOM system reflects the complete restructure from hardware-based to assembly-based organization, with component data stored in YAML files following the project's folder structure.