Jack Christensen
Retired at Grand Blanc, MI
Grand Blanc, Michigan, United States
Summary
👤
Senior🎓
Top SchoolJack Christensen is a retired electrical engineer who spent 36+ years in IT, culminating in enterprise and systems-architecture roles at EDS and HP Enterprise Services. Now based in Grand Blanc, Michigan, he pursues embedded systems and IoT as a hobbyist and occasional consultant, working with AVR microcontrollers and 802.15.4 ZigBee/XBee networks. He maintains practical open-source contributions—most notably improving an Arduino DS3231/DS3232 RTC library by fixing subtle compatibility and timekeeping issues and adding examples—demonstrating attention to low-level correctness and documentation. Combining hands-on circuit design and decades of operational IT experience, he brings a rare blend of hardware intuition and enterprise-grade systems thinking to small-scale IoT projects.
11 years of coding experience
19 years of employment as a software developer
BEE, Electrical Engineering, BEE, Electrical Engineering at Kettering University
Github Skills (8)
embedded10
arduino10
sys10
arduino-library10
rtc10
cprogramming-language9
c-language9
i2c9
Programming languages (8)
Github contributions (5)
JChristensen/DS3232RTC
Jan 2015 - May 2022
Arduino Library for Maxim Integrated DS3232 and DS3231 Real-Time Clocks
Role in this project:
Embedded Systems Engineer / IoT Developer
Embedded Systems Engineer / IoT DeveloperContributions:19 releases, 39 commits, 15 PRs in 7 years 5 months
Contributions summary:Jack primarily contributed to the Arduino library for the DS3232/31 Real-Time Clocks (RTC). Their work focused on improving the library's functionality, addressing compatibility issues, and enhancing documentation. Key contributions include refactoring the `oscStopped()` function, updating documentation to address compatibility issues, correcting an issue related to setting the DYDT bit, and adding example sketches, enhancing the library's usability.
arduino-libraryreal-time-clockrtcds3231ds3232
JChristensen/JC_Button
Apr 2017 - Oct 2019
Arduino library to debounce button switches, detect presses, releases, and long presses
Contributions:8 releases, 12 commits, 8 PRs in 2 years 5 months
arduino-librarydebouncebuttonswitchdebounce-button
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