These two tutorials explain the error code calculations: https://www.thonky.com/qr-code-tutorial/error-correction-coding https://www.thonky.com/qr-code-tutoria

These two tutorials explain the error code calculations: https://www.thonky.com/qr-code-tutorial/error-correction-coding https://www.thonky.com/qr-code-tutorial/error-correction-cod... https://dev.to/maxart2501/let-s-develop-a-qr-code-generator-part-iii-error-correction-1kbm https://dev.to/maxart2501/let-s-develop-a-qr-code-generator-...