This is a personal project and not a commercial product. I am not liable for any damage caused by the module. Use at your own risk. The project is licensed under the CC BY-NC-SA 4.0 license. If you have any questions, feel free to contact me. This is a hobby project, and I am not a professional hardware embedded systems builder; my profession is web development, so some hardware design or code decisions may seem unconventional. Special thanks to HAGIWO for providing the foundational knowledge.