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May 25, 2020, 12:33 p.m. PDT
replied a new topic to Use of wires
May 21, 2020, 12:29 p.m. PDT
replied a new topic to combined input power
Feb. 26, 2020, 4:46 p.m. PST
joined team
Feb. 26, 2020, 4:55 p.m. PST
registered for challenge