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Michael Halbern

Michael Halbern is a Professor of Mechatronics at Sierra College where he has taught since 1981.  His primary focus has been on student project design and development, linear circuits, microcontrollers, and mechatronics.  He has also designed electronics projects for use in local middle schools and high schools. 


In 1997 he was President of the California Council of Electronics Instructors.  In 2006, he received the NISOD Award for Excellence in Teaching.

Contact Info:
(916) 660-7860         mhalbern(at)sierracollege(dot)edu
Gary Campbell

Gary Campbell is an Adjunct Professor of Computer Integrated Electronics at Sierra College. Himself a graduate of Sierra College, he has taught computer and mechatronics related subjects at the public high-school level, in private post-secondary schools, and at Sierra for over ten years. During the creation of Sierra's new Mechatronics program he developed and now teaches the program capstone "Mechatronics Systems" course.


He also serves as a development consultant and instructor for various Technical Education and Center for Applied Competitive Technology programs.

Contact Info:
Jim Weir

Jim has been teaching in the CA Community College system since 1971, first at Miramar College in the Aircraft Inspection and Maintenance dept., and since 1981 in the Electronics and Mechatronics program at Sierra College. He is currently the Vice President and Membership Chair for the Sierra College Faculty Association.  

He attended Grossmont Community College and graduated from San Diego State University in 1967 with a degree in Physics, Mathematics and Aerospace Studies. When not teaching, he finds time to run his aviation electronics manufacturing company, write a monthly column for a national aviation magazine, teach student pilots, inspect aircraft for airworthiness, keep the orchard trimmed, plant the garden, and take the airplane up for the occasional pleasure flight.

Prior to his academic career, he worked on the space program (Apollo, Surveyor, and Viking) and put himself through school as a mechanic for Pacific Southwest Airlines (PSA).  

Jim lives in Grass Valley on a couple of acres of garden and orchard with Gail (also a flight instructor and consummate web guru),  Katie (the Sheltie), Ollie (the Lhasa Apso), and Charly and Gnarly (the pound brother kitties and world-class ratters).

Contact Info:
Mike Robinson

A self-described full-time electronics hobbyist, part-time teacher and some-time professional technician, Mike Robinson was born and raised in Northern California. With qualifications largely based on experience, he's been a part-time instructor at Sierra College since 1985.

Mike's interest in electronics blossomed when he enrolled at Sierra College to learn to troubleshoot the devices he was busy building. The hobby became a vocation. He has worked for a diverse group of electronics-industry employers in positions that include assembly, board test, final system test, engineering aide, PCB designer, design draftsperson and project engineer.


Mike has more than three decades of real-life technical experience, almost a quarter century of teaching experience, follows a practice of only teaching classes to which that prior real-life experience applies, knows what it's like to work a full-time job and go to night school and tries to express the excitement of teaching his hobby.

Contact Info:
Steve Gillette

Steve Gillette has earned AA degrees in Machine Tool Technology from College of the Redwoods and Computer Integrated Electronics from Sierra College, a BS in Mechanical Engineering Technology from CSU-Sacramento and an MS in Engineering Management from CSU-Northrridge.


His industry expertise is in industrial continuous processes including power generation and water treatment; hands-on installation, repair and troubleshooting of mechanical electrical, instrumentation & control devices; advanced maintenance practicers including vibration, infrared and ultrasonic analysis as well as industrial safety including confined space entry, arc flash hazards and control of hazardous energies. 


Steve's education and experience is a huge assett to Sierra College Mechatronics Department.

Contact Info:
Steve House
Steve has been teaching part-time at Sierra College for ten years. He graduated from CSU, Sacramento and did graduate work at Langley-Porter Institute in human information processing. He is a private Network Consultant.

He enjoys international travel, chess, hiking and sharing his knowledge and enthusiasm "for the most powerful multi-use tool ever invented (the computer)."

Contact Info:
Tim Stockwell

Tim Stockwell received his B.S. in electronic engineering from Cal Poly in 1985.  Since then, he has worked at Hewlett-Packard for over 20 years, testing a wide variety of computer products and technologies.  During this time, though, Tim also earned an M.S. degree at U.C. Berkeley in architecture and later worked at Williams Paddon, designing schools and acquiring his LEED certification.  Tim has taught community college, undergrad, and graduate level classes throughout his own education.  He now works as a Test Architect in HP Networking and teaches part-time in Sierra College Mechatronics Department.

Tim grew up making things.  He dove into wood-working and metal-working in high school.  During this time, he was an auto mechanic in his father's business, and he learned welding through a family business as well.  He continues to make and fix things, everything from fences to computers, but his greatest passion is restoring antique cars.  He currently owns 3 Packards, 1940 - 1951; a 1970 VW bus; and a 1973 Dodge Charger.

Contact Info:
Nathanael Griesert

Nathanael Griesert is a proud alumni of Sierra College and has earned degrees in electrical and computer engineering from Cal Poly San Luis Obispo and UC Davis.


Nathanael has worked for National Semiconductor since 1998 as a design engineer inventing analog and mixed signal integrated circuits for applications in mobile electronic devices and systems. His favorite chip designs have been ones that involve communication with various sensors in mobile devices that process "real world" information to do something useful with it. 


He is excited to be a part time faculty member of the Mechatronics program where he can teach practical knowledge and skills for solving real problems in a variety of careers. 


Nathanael enjoys hiking, biking, running, swimming, and other active outings in the great outdoors.

Contact Info:
Ray Warner


Ray has earned associates degrees in Computer Integrated Electronics and Computer Science from Sierra College. As a former Mechatronics student and lab assistant, Ray really connects with his students. His interest in electronics stems from Popular Electronics projects he and his father built in the 60s, including the ELF II computer and a four-function calculator, which earned him First Place in the school Science Fair.


Ray has extensive experience in both electronics and instruction during his service in the US Air Force. He has over 15 years experience in the semi-conductor equipment manufacturing industry in the Bay Area. With lots of military and industrial experience, Ray brings a wealth of knowledge to our program.


When Ray is not teaching he is writing programs for the fun of it.

Contact Info:
Alysia Lopez


Alysia is the lab technician for the Mechatronics program. Based in Rocklin, she also helps make sure that our NCC and Truckee campuses have all the working equipment and supplies needed to teach our program. She is an indispensable member of our team. Have a question? If Alysia can't help you out, she definitely knows who can.

Contact Info:
(916) 660-7862    alopez(at)sierracollege(dot)edu
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