Tim Woolaver Email & Phone Number

Designed PCBs and provided engineering support for 50+ projects in the fields of Embedded Systems Motion Control BT and WIFI communications Sensor and Display interfaces. Wrote firmware and software for many of these projects.

Billerica, Ma, Us

Axsun Technologies designs and manufactures products employing Optical Coherence Tomography (OCT) techniques. They serve the Telecom and Medical markets. The medical products, which are the ones that I worked on, are used to image retinas and various arterial tests. The advantage of OCT over other imaging techniques is that it can be used to image tissue to a depth unlike Ultrasonic or MRI techniques. Micron resolution at a depth of 2mm can be achieved.• Designed a Handpiece PCB based on the ADI Blackfin Microprocessor for a Fiber optic Cardiac Catheter System. The Handpiece is used to spin and pull back the Catheter within the patient while collecting arterial image data. So far, 50 have been produced, used in engineering and animal studies.

Seahorse BioScience designs and manufactures extra cellular flux analyzers used for in-vitro assays. Using LEDs, fiber-optics and fluorescent probes, oxygen consumption rates and acidification rates are measured in live cells. This process is done twice. The first measurement is a baseline of these rates. The second measurement is done after exposing the cells to various reagents to measure their effect on cellular energetics.• Implemented processes to improve PCB yields from 50% to 95+%. PCBs represent approximately 30% of the product material cost.• Designed fixtures, wrote software, and wrote procedures to automate PCB testing. Reduced test time from several hours to approximately 20 minutes.• Redesigned a transimpedance amplifier with a gain of 10 billion to improve reliability.• Designed PIC based temperature controller PCB to control temperatures in the instrument within 0.1°C.• Acted as liaison between consultants and manufacturing for the introduction of a fluidics system. Duties included.o Documenting the instrument.o Procuring the parts for and supervising technicians on the beta build.o Training manufacturing and service personnel on assembly, test, installation, and repair.• Obtained regulatory approval for instruments (TUV & CE). In the process, debugged EMC, EMI, and safety problems.

Aushon BioSystems is a biotech startup, which designs and manufactures a protein deposition robot used to create biological assays. The system contains a large XYZ stage, which uses servo driven lead screws with linear encoder feedback to transfer samples from microtiter plates to substrates. The system has a positional resolution of ½ micron. Developed the system electronics architecture. Designed all electrical systems (7 PCBs, 80+ cables), and specified all purchased components for both alpha and production systems). Developed the system throughput model to optimize performance and guarantee stability. Wrote motion control code to test the systems. Purchased all electrical components for the first build of 5 systems. Debugged and tested initial systems for shipment. Modified and tested the system to qualify for CE compliance. Supervised technicians on engineering and production builds. Wrote assembly and test procedures. Installed and serviced several of the initial systems.