Devin Sewell
LuminaSet Bluetooth Debug Tool for iOS
2025
Developer
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I built this Open-Source Bluetooth debug tool to be a better alternative to the widely used Bluetooth Debug app "LightBlue". Download the GitHub Repo. Download LuminaSet Bluetooth Debug Tool on the App Store
Hydrofoil Surfing
2025
Developer, 3D Artist
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This commercial release for PC and MacOS started as a experimental real-time ocean physics system idea I had, I've ported it to multiple platforms including ARM Linux, Android, and iOS. It is optimized to run smoothly on minimal hardware. Download 'Hydrofoil Surfing' on Steam. Currently in the review process to be available for Xbox, once approved Nintendo Switch 1/2 is next, then Playstation.
Utility Apps for iOS
2025
Developer
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These are a few of the iOS apps I developed in my spare time during 2025:

  • Spritesheet Maker: Pixel art animation app with spritesheet export for 2D gamedev.
  • VOID Cam: "VOID is a live-filter camera for photo and video. Every adjustment — RGB offsets, contrast, exposure, warmth — happens in real time. No rendering, no waiting. " This was a experiment with real-time pixel buffer processing.
  • Quick Sign & Fill: "Sign PDFs in seconds. Add text, insert your signature, and export—fully on-device, no accounts, no tracking." I built this as a offline, lightweight alternative to 'Docusign'.
  • Magnify: A simple magnification app with offline computer vision - "READ TEXT" button that freezes the current view and decodes any visible text to large, easy to read type.
  • Color Picker - HEX, RGB, HSL: Simple color picker and palette maker.
  • Lunore: Offline real-time moon phase to the thousandth decimal. I duplicted the functionality of moon-phase analog wristwatches. The most challenging part of creating the formula was the outer 0% and 100% of the moon phase, most days of the cycle change almost 10% phase per day, while the edge phases change less than 1% over multiple days.
B-K Lighting
2024
Firmware and Wireless API Developer, Lead Mobile Developer.
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Developed Swift and Kotlin lighting control apps paired with a custom Wireless API supporting Wi-Fi mesh and BLE devices. Implemented LuminaSet sub-packet protocol and ESP-IDF firmware with Wi-Fi mesh, SIG100 powerline communication, and OTA updates.
LuminaSet
2023
Founder, Developer, 3D Artist.
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Created a universal automation protocol API supporting mesh sizes up to 256 devices with deterministic scheduling and grouping.
Hive Lighting
2021–2023
Lead Mobile Developer, Firmware Consultant.
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Built seperate Swift and Kotlin BLE lighting control apps. Provided firmware and OTA architecture consulting, wireless API design.
Ciye
2019
Wireless API engineer (file transfer from BLE device to React).
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Ported Ciye’s file transfer logic to React from Swift, achieving reliable 10MB+ transfers over BLE from NRF52 hardware in under 5 minutes. Implemented Firebase to sync telemetry data.
GliscoTech
2018
Software/Firmware Developer.
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Developed “Base Station” firmware: Wi-Fi/REST API, RF data relay to mesh nodes, scheduled command automations via RTC. Built the paired Progressive Web App for lighting schedule and fixture management.
REX: procurement management as a service
2017–2018
Software Developer, Server-side Developer.
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Developed a procurement tracking and invoicing platform. GOV SaaS / macOS.
Chronos Smartwatch
2015–2016
Lead iOS (Objective-C) Developer, Bluetooth API Developer, Firmware Consultant.
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Built the Bluetooth LE smartwatch connected iOS app and contributed to Nordic SDK-based firmware. Highway1.io accelerator start-up.
Edyn Connected Garden
2014
iOS Developer, Data Visualization.
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Developed JSON-driven data visualization modules written in Objective-C for Edyn’s garden sensor iOS app. Y-Combinator start-up.
NBCSports SportsDash
2013
Lead Full-Stack Developer.
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Lead developer of browser-based curation software for live television.