CAMDEN GALEN
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Oregon Sea GrantSep 2023 - Jun 2025

Earthquake Cache Access Device

This Oregon Sea Grant project focused on emergency readiness for coastal communities. The device was designed to attach to a community emergency cache, detect major seismic activity, activate a visible beacon, unlock a key box, and help people access supplies more quickly when timing matters.

PCB DesignC++Mechanism DesignField Testing

Project visuals

Fully assembled Sea Grant earthquake cache access device with enclosure and beacon
Assembled system

Full assembled system showing the weatherproof enclosure, mounted beacon, and external power connection.

Annotated enclosure view showing the Sea Grant system wiring and power connections
Weatherproof enclosure

Enclosure layout showing the power input, LED connection, and solenoid connection inside the assembled unit.

Circuit schematic for the earthquake cache access device
Circuit schematic

System schematic connecting the ESP8266 feather board, IMU, LED output, solenoid output, and power inputs.

3D-printed keybox used in the earthquake cache access device
Keybox mechanism

3D-printed keybox used to store the key or access code and release it when the system is triggered.

Assembled custom PCB for the Sea Grant earthquake cache access device
Custom PCB assembly

Populated control board integrating the ESP8266 feather, IMU interface, and connector points for the rest of the system.

System concept

The system was built to improve emergency cache access after a major Cascadia event. Using a 3-axis accelerometer and an ESP8266-based controller, it monitors for significant shaking and can trigger a solenoid-released key box, flash an LED beacon, and send an email alert when Wi-Fi is available.

Documentation and handoff

Beyond the hardware itself, the project also produced operational documentation for setup, maintenance, troubleshooting, and safe use in the field. That made the project more than a prototype and helped turn it into something that could be maintained, tested, and handed off clearly.

What I worked on

  • Designed, prototyped, and field-tested the full device concept for community emergency caches.
  • Created a custom PCB and ESP8266-based firmware to detect seismic activity and trigger the system response.
  • Designed the key-box mechanism in Inventor and integrated the solenoid, LED beacon, and accelerometer hardware.

Supporting documents

Articles on project