Job Title: Design a PCB for ESP32-S3 Dev Board with Multiple I²C Sensors Job Description: I need a freelancer to design a custom PCB that acts as a carrier for an ESP32-S3 N16R8 Dev Board and connects multiple I²C sensor modules. The PCB should provide power, I²C connectivity, and connectors for all sensors. Key Requirements: ESP32-S3 Dev Board mounted via female pin headers Power input: 5V via 2-pin screw terminal, with onboard 3.3V regulator I²C bus: Shared SDA/SCL, single set of 4.7kΩ pull-ups to 3.3V Sensors & connectors: SCD30 – 4-pin header (VCC, GND, SDA, SCL) SEN0394 – 4-pin header (VCC, GND, SDA, SCL) SEN66-SIN-T-ES – JST GHR-06 connector (SEL pulled to GND via 10kΩ) SHT40I – RJ12 connector (VCC, GND, SDA, SCL only) BH1750 – 4-pin header (VCC, GND, SDA, SCL) OLED display – 4-pin header (VCC, GND, SDA, SCL) PCB should be 2-layer, include mounting holes, silkscreen labels, and be manufacturable by JLCPCB Include decoupling capacitors, proper grounding, and clean I²C routing Deliverables: KiCad or EasyEDA schematic and PCB layout JLCPCB-ready Gerber and drill files BOM compatible with JLCPCB assembly Pick-and-Place file Optional: 3D render of the PCB Links for reference: ESP32-S3 N16R8 Dev Board SCD30 SEN0394 SEN66-SIN-T-ES SHT40I BH1750 OLED Display Requirements for Freelancer: Experienced with EasyEDA or KiCad Able to design clean, manufacturable PCBs with I²C sensor networks Can deliver JLCPCB-ready files ready for fabrication