Michael Doornbos

OffGlobe LLC

My company. Service-disabled veteran-owned (SDVOSB). Building products at the intersection of security, accessibility, and independent technology.

Assistive Technology

Spatial audio, real-time object detection, and head-tracked 3D sound for blind and visually impaired users. Working prototype built, pilot study in planning.

HP-16C Calculator (iOS)

A faithful recreation of the HP-16C programmer’s calculator for iPhone. RPN, base conversions, bit manipulation, all the original functions plus a second display line for the Y register and full 32-bit binary without scrolling. 200+ unit tests. Free on the App Store.

LoreKeeper

Helping families capture and preserve their stories before they’re lost. Voice capture, guided prompts, photo-prompted memories, and printed story books.

Writing

I write across three sites:

Fiction

Three completed novels. The most recent finished in March 2026.

OT Security

Built an OT/IT security practice from scratch at Assurance Data, Inc., deployed across 100+ solar facilities. SCADA, Modbus, zero-trust architecture.

Hardware

Vintage computer restoration, circuit board design, and the occasional LFSR shadow box. HAM radio operator (N4LNX).

Past Work