"Digital Fossil" – Ultra-Reliable 128GB Automotive-Grade Archival Storage
Budget: ₹12,500 – ₹37,500 INR
Project Overview:
I am looking for an expert Embedded Systems Engineer to design and build a single, high-reliability storage device meant to last 50 years without repair or maintenance. This is a "set it and forget it" archival project.
Scope of Work:
Hardware Design:
Select an Automotive-Grade MCU (AEC-Q100, e.g., NXP S32K or ST SPC5 series).
Implement Dual-Redundant 256GB Industrial pSLC eMMC chips (mirrored for 128GB usable space).
Design a 4-layer PCB with ENIG (Gold) finish.
Use Ceramic Capacitors (MLCC) only; strictly avoid electrolytic/tantalum.
Hard-wire a gold-plated USB-C pigtail directly to the PCB.
Firmware Development (Bare Metal):
Implement USB Mass Storage Class (MSC) for driverless PC compatibility.
Develop RAID-1 Mirroring logic between the two eMMC chips.
Implement Static Wear-Leveling and Data Scrubbing (auto-repairing bit-flips).
Ensure the file system is exFAT for long-term cross-platform compatibility.
Prototyping & Potting:
Assemble one working unit.
Finalize the project by Vacuum Potting the assembly in Alumina-filled epoxy resin to create a solid, airtight block.
I am looking for an expert Embedded Systems Engineer to design and build a single, high-reliability storage device meant to last 50 years without repair or maintenance. This is a "set it and forget it" archival project.
Scope of Work:
Hardware Design:
Select an Automotive-Grade MCU (AEC-Q100, e.g., NXP S32K or ST SPC5 series).
Implement Dual-Redundant 256GB Industrial pSLC eMMC chips (mirrored for 128GB usable space).
Design a 4-layer PCB with ENIG (Gold) finish.
Use Ceramic Capacitors (MLCC) only; strictly avoid electrolytic/tantalum.
Hard-wire a gold-plated USB-C pigtail directly to the PCB.
Firmware Development (Bare Metal):
Implement USB Mass Storage Class (MSC) for driverless PC compatibility.
Develop RAID-1 Mirroring logic between the two eMMC chips.
Implement Static Wear-Leveling and Data Scrubbing (auto-repairing bit-flips).
Ensure the file system is exFAT for long-term cross-platform compatibility.
Prototyping & Potting:
Assemble one working unit.
Finalize the project by Vacuum Potting the assembly in Alumina-filled epoxy resin to create a solid, airtight block.