Qwiic OpenLog review figures: explanatory adaptations by LCENJ from SparkFun Electronics Qwiic_OpenLog hardware commit f3f6a3ec3f70fe4c14612b38fac360f26ee79a4c. Hardware license CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/ . Changes: simplified functional diagrams, coordinate rendering of board pads/traces, added labels, ground fills omitted; not a manufacturing preview. Original hardware: https://github.com/sparkfun/Qwiic_OpenLog/tree/f3f6a3ec3f70fe4c14612b38fac360f26ee79a4c/Hardware . Original license: ../License.md in that repository. review_math.py: original LCENJ educational arithmetic, MIT license. Permission is granted free of charge to use, copy, modify, merge, publish, distribute, sublicense and/or sell copies, subject to preserving this notice. THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND. Copyright (c) 2026 LCENJ. No third-party photograph is included.