Analog & Mixed Signal
Project 13
High-Speed Directional Microphone
Custom analog front-end and conditioning for a directional microphone used in high-speed acoustic capture experiments.
Selected Client Projects
A sampling of hardware Sean O’Leary has designed for clients — from bilingual toys and medical research tools to field robotics and remote sensing. Browse by focus area to see the kinds of systems Celtic Engineering Solutions brings from concept to board.
Analog & Mixed Signal · Front-Ends & Conditioning
Digital & Embedded Systems · Firmware, Control & Logic
Digital & Embedded Systems
Project 01
Lingua Bear — Bilingual Learning Toy
Microcontroller-based plush toy that plays interactive bilingual phrases and tracks usage to support early language acquisition.
Digital & Embedded Systems
Project 07
Khufu Dense Peripheral Board
High-density control board routing numerous peripherals and I/O channels into a compact, production-ready form factor.
Digital & Embedded Systems
Project 15
Kool Koor Hip-Hop Exhibit Controller
Custom audio loop and lighting controller powering an interactive “50 Years of Hip-Hop” museum installation.
Digital & Embedded Systems
Project 16
Electronic Door Lock Mechanism
Integrated control board and actuation interface for a secure electronic door lock used in commercial access systems.
Power & Energy · Drivers, Supplies & Safety
Power & Energy
Project 03
Iontophoresis Medical Controller
Precision constant-current driver for iontophoresis therapy, with safeguards and monitoring tailored to clinical environments.
Power & Energy
Project 08
UV Laser Diode TEC Driver
Precision laser diode driver with integrated TEC control for stable UV output in lab and production environments.
Power & Energy
Project 10
Wearable Jewelry LED Lights
Miniature LED driver boards for wearable jewelry, optimized for coin-cell power and low-profile assembly.
RF & Wireless · Links, Tracking & Ranging
RF & Wireless
Project 11
Mobile Dog Fence Trainer
RF-based dog training and containment system with configurable distance thresholds and portable base unit.
RF & Wireless
Project 14
Kanda Remote Weather Station
Solar-powered remote weather node sending field data wirelessly back to a central gateway for farm monitoring.
RF & Wireless
Project 17
Micro GPS Arrow Tracker
Ultra-compact GPS and RF board embedded in archery arrows to help locate lost equipment after a shot.
Sensing & Measurement · Data You Can Trust
Sensing & Measurement
Project 02
NASA Pressure Display Panel
Large-format pressure visualization system used in a NASA surgical research lab to show real-time sensor arrays during experiments.
Sensing & Measurement
Project 04
Veristride Gait Monitor
Embedded sensor and data acquisition platform for measuring gait, cadence, and load to support biomechanical research.
Sensing & Measurement
Project 05
Weather Egg Handheld Station
Palm-sized weather station capturing temperature, humidity, and barometric pressure for citizen science and education.
Sensing & Measurement
Project 12
Flexible Catheter Pressure Array
Multi-point pressure sensing array embedded in a flexible catheter for advanced medical research applications.
Field Notes & Prototypes · Rugged, Tested, Deployed
Field Notes & Prototypes
Project 06
Roadside Hazard Beacon
Ruggedized beacon with multi-mode LED patterns designed for high visibility roadside and construction safety.
Field Notes & Prototypes
Project 09
Mobile Electric Fence System
Portable electric fence controller for temporary perimeter protection at campsites and remote work sites.
Field Notes & Prototypes
Project 18
Robotic Laser Weed Killer
Control electronics and safety interlocks for a robotic platform that uses lasers to target weeds in precision agriculture.
