Casey Walsh Email & Phone Number

Carlsbad, Ca, Us

Carlsbad, Ca, Us

San Diego, Ca, Us

Developed continuous-wave time-of-flight distance measuring module based on visible laser diodes. Challenges to overcome included a 5mW eye safety limit for the visible lasers, high data acquisition rate requirement, and extremely faint return signal at long distances and dark targets

* Developed unique mixed-signal PCBA for controlling and monitoring the isolation of specific High Molecular Weight biological material via a proprietary microfluidic device (BiologicalDynamics.com).* Created a retroactive design history file for an existing DNA amplification/detection instrument to facilitate integration into a medical system.* Assisted in the design of a Secure Media Block for digital cinema use.* Developed a low noise, high stability solid-state laser diode power controller including modulation functionality for photonic test and measurement industry (ArroyoInstruments.com).* Developed a precision Thermoelectric Cooler (Peltier device) control instrument for laser-diode applications (ArroyoInstruments.com).

* Part of core 3-person team which established a set of assays and procedures (a workflow) to reliably isolate and sequence fetal nucleated red blood cells from maternal blood, thus enabling true Non-Invasive Prenatal Diagnostics (NIPD).* Led parallel development of innovative Flow Cytometry, Cell Sorting, QPCR and Multi-Format Fluorescence Imaging instruments for life-sciences and healthcare applications.* Created Bioinformatics algorithms to perform deep analysis of raw aCGH data files (real clinical samples) and creating certain healthcare-related “Call” results.* Created automated 3D fluorescence-based slide scanner to provide accurate cell counts and viability statistics (up to 150k cells per side).

Santa Clara, Ca, Us

* Led $3.5M development project for a next-generation QPCR instrument from concept through design transfer.* Helped define Design Controls to enable new product development in conformance with FDA 21 CFR 820, ISO 60601, Safety & EMC Compliance regulations.* Developed embedded electronics and firmware for the QPCR instrument, optimized thermal control PID performance, quadrupled the fluorescence detection sensitivity by digitizing at the source, and increased the plate scan speed by implementing concurrent 2-axis motion control and 4-channel emission/detection operations.* Performed Systems Engineering, Circuit Design & PCB board layout (DxDesigner, Expedition), Prototyping, Verification & Validation, Project Management, Safety & EMI compliance testing, FMEA & CAPA activities, and Design History File creation.

Us

* Converted a production $25k QPCR instrument to full RoHS compliance in only 6 months, thus extending the sales life by 5 years and enabling an additional $15M annual market segment.* Developed integrator/amplifier for photodiode detection of very weak fluorescence signals. This eliminated expensive PMTs and allowed much-needed miniaturization.

Developed specialized analog- and digital-domain cinema-grade audio/video test equipment.

* Implemented design controls to conform to FDA and ISO quality system requirements.* Designed embedded software, firmware, and electronics for a Class II medical device in compliance with international safety and EMI standards.* Contributed to software and hardware validation; 510k clearance effort; and US, Canada & Japan Safety & EMI clearance.

* Assisted in the creation of EE*Pro and ME*Pro – software packages for the TI-89 and TI-92 series of CAS (Computer Algebra System) graphing calculators.

* Invented technology to overlay text and graphic messages on standard television sets (see US patent 5,221,962).* Created microprocessor-based oven control circuitry for consumer-grade rotisserie oven.* Designed and prototyped dual-linear CCD fingerprint scanner.* Created 120VDC motor protection circuit for consumer-grade pasta maker.

* Developed PC- and VME-based machine vision hardware for industrial color-based sorting systems.* Created real-time image processing software to handle very high-speed inspection and sorting of natural items such as tobacco, fruits and vegetables, wood chips, and rice and grains.* Created industrial light-pen based GUI (pre-Windows) for industrial machine vision systems.* Developed vision system for sorting reclaimed plastic containers by polymer and color (see US patent 5,443,164).

Coursework, Chemistry; Math And Physics

Coursework, Chemistry; Math And Physics

A.S, Electronics Engineering Technology

Various