Runway LED PCB & Firmware

This project covers the full design cycle for an outdoor runway light: electronic schematic, PCB layout, and embedded firmware. The board must drive a high-brightness LED array and interface with a constant-current regulator that delivers 6.6 A, the standard airfield CCR level.

Core requirements
• Reliable 6.6 A current handling without flicker or thermal runaway
• Weather-proof component selection and track spacing suitable for open-field installation
• Firmware that recognises and responds to CCR step changes so the lamp can track the mandated brightness levels (typically 6-step dimming)

Typical workflow
1. Confirm LED string voltage/current profile and heat dissipation model
2. Produce schematic and PCB (Altium or KiCad preferred; four-layer board expected)
3. Develop and document firmware (C/C++ on an MCU of your choice, e.g., STM32 or PIC) that samples the CCR waveform and PWM-dims the LEDs accordingly
4. Provide gerbers, BOM with manufacturer part numbers, compiled firmware, and source code

Acceptance
I will review the design files for compliance with the 6.6 A CCR interface and outdoor durability, then test a prototype for brightness stability across all CCR steps. Payment releases once those checks pass and firmware sources compile without warnings.