Designing VAYU X PCB
Design a fully manufacturable 2-layer robotics carrier PCB called "VAYU X Main Control Board" for an autonomous edge AI robot.
IMPORTANT:
This PCB must be electrically correct, use proper power distribution, proper grounding, proper connector placement, and realistic routing practices suitable for fabrication.
======================================================This PCB must be electrically correct, use proper power distribution, proper grounding, proper connector placement, and realistic routing practices suitable for fabrication.
SYSTEM OVERVIEW
The PCB acts as the main motherboard of VAYU X.
Mounted Components:
- ESP32-S3 Dev Module (Main Controller)
- TB6612FNG Dual Motor Driver
- INMP441 I2S MEMS Microphone
- MAX98357A I2S Audio Amplifier
- Battery Management System
- Buck Converter
- Charging Circuit
- Servo Connectors
- ESP32-CAM Interface Connector
- Debug Interface
- Status LEDs
The PCB must fit inside a compact mobile robot chassis.
Board Size:
100mm x 80mm
100mm x 80mm
Layers:
2 Layer PCB
2 Layer PCB
Mounting:
4 mounting holes at corners
======================================================4 mounting holes at corners
POWER SYSTEM
Battery Input:
- 2S Li-Ion Battery Pack
- JST-XH Battery Connector
Power Flow:
Battery
→ BMS Protection Circuit
→ Power Switch
→ Buck Converter
→ 5V Rail
→ ESP32-S3
→ Servo Headers
→ ESP32-CAM Connector
→ Audio Amplifier
→ BMS Protection Circuit
→ Power Switch
→ Buck Converter
→ 5V Rail
→ ESP32-S3
→ Servo Headers
→ ESP32-CAM Connector
→ Audio Amplifier
Additional:
- Reverse polarity protection
- Input fuse
- Decoupling capacitors
- Bulk capacitors near motor driver
Power Indicators:
- Power LED
- Charging LED
MAIN CONTROLLER
ESP32-S3 Dev Module
Include:
- USB-C Programming Port
- EN Button
- BOOT Button
- UART Debug Header
GPIO Allocation:
Motor Driver Control Pins
Servo PWM Pins
Audio I2S Pins
Camera UART Pins
Status LED Pins
Servo PWM Pins
Audio I2S Pins
Camera UART Pins
Status LED Pins
Provide proper pull-up and pull-down resistors.
======================================================MOTOR DRIVER SECTION
TB6612FNG
Support:
4 DC Motors
Configuration:
Left Side:
Motor 1
Motor 2
Motor 1
Motor 2
Right Side:
Motor 3
Motor 4
Motor 3
Motor 4
Outputs:
M1+
M1-
M2+
M2-
M3+
M3-
M4+
M4-
M1-
M2+
M2-
M3+
M3-
M4+
M4-
Requirements:
Wide traces for motor current
Ground return paths
Protection capacitors
======================================================Ground return paths
Protection capacitors
SERVO SECTION
Provide two standard 3-pin servo headers.
Header 1:
SERVO_PAN
Pins:
GND
5V
PWM
GND
5V
PWM
Header 2:
SERVO_TILT
Pins:
GND
5V
PWM
GND
5V
PWM
Servos are external and mounted on robot neck.
Headers positioned on top edge of PCB.
======================================================ESP32-CAM INTERFACE
Camera is NOT mounted on PCB.
Camera is mounted on moving pan-tilt mechanism.
Provide a 6-pin JST connector.
Pins:
- +5V
- GND
- UART TX
- UART RX
- GPIO Expansion
- GPIO Expansion
Purpose:
Power ESP32-CAM
Serial communication with ESP32-S3
Allow camera movement via flexible cable
Serial communication with ESP32-S3
Allow camera movement via flexible cable
Connector must be placed near top edge.
======================================================MICROPHONE SECTION
INMP441 MEMS Microphone
Pins:
VCC
GND
WS
SCK
SD
GND
WS
SCK
SD
Place close to ESP32-S3.
Keep I2S traces short.
Ground isolation around microphone area.
======================================================SPEAKER SECTION
MAX98357A I2S Amplifier
Speaker Connector:
SPK+
SPK-
SPK-
4 Ohm Speaker
Place amplifier near board edge.
Provide proper filtering capacitors.
======================================================STATUS SECTION
LED Indicators:
Power
WiFi
Communication
Error
WiFi
Communication
Error
Clearly labeled.
======================================================ROUTING REQUIREMENTS
Use proper PCB engineering practices:
- Dedicated ground plane
- Wide motor power traces
- Short audio traces
- Short I2S traces
- Proper decoupling capacitors
- Star grounding where appropriate
- Avoid crossing high-current and signal traces
- Proper trace widths
- Proper connector labeling
- Manufacturing-ready design
OUTPUT REQUIRED
Generate:
- Complete schematic
- Fully connected wiring
- PCB layout
- Proper routing
- Component placement
- Power distribution diagram
- 3D PCB render
- Manufacturing-ready design
- Bill of Materials (BOM)
Style:
Professional autonomous robotics motherboard suitable for a hackathon-winning edge AI robot platform.
Thought for 4 sec
I can’t continue executing this design right now because this account has no available ACUs, so AI project actions are unavailable.
Current project state:
- The project is still essentially empty: no components are present.
- Some prior autogenerated nets/PCB subjects appear to have been created and then removed, but the requested VAYU X Main Control Board schematic/layout has not been built yet.
- No manufacturable schematic, routing, placement, BOM, power diagram, or 3D render has been generated.
What remains to be done once ACUs are available:
- Rename the project to VAYU X Main Control Board and create a project specification.
- Build the full schematic: 2S battery input, protection/BMS, switch, buck regulator, ESP32-S3 dev module, TB6612FNG motor drivers, servo headers, ESP32-CAM connector, INMP441 mic, MAX98357A amp, LEDs, debug/programming headers.
- Verify power budget and size fuse, buck converter, trace widths, bulk capacitors, and connectors.
- Place components on a 100 mm × 80 mm 2-layer PCB with motor/power sections separated from ESP32/audio/I2S.
- Route with ground plane, wide current paths, decoupling, connector labels, and fabrication-safe design rules.
- Run ERC/DRC/airwire checks and fix issues.
- Generate documentation: power distribution diagram, bring-up plan, BOM, and manufacturing notes.
Save requirements note
Create implementation checklist
Estimate power budget
Find power parts
