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Chris Ray Engineering
Projects
A working archive of completed and ongoing work across all domains.
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Domain Electrical Mechanical Software
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Analog DeWalt Undervoltage Protection Circuit
A through-hole PCB kit that powers a TS-100 soldering iron from a DeWalt 20V MAX battery, with passive analog undervoltage lockout to protect the cells.
Electrical Mechanical
Jan 2018
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Class Scheduler
A browser-only school scheduling tool that runs from a USB stick — no server, no install. Generates ranked candidate schedules from class and teacher data using a priority-based placement algorithm.
Software
May 2026
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