Create index.md

Author: uncommonRaum

1209/a69a/index.md

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+---
+layout: pid
+title: Lagrange USB-UART Bridge
+owner: UNCOMMONGROUP
+license: MIT
+site: https://github.com/UNCOMMONGROUP/Lagrange
+source: https://github.com/UNCOMMONGROUP/Lagrange
+---
+USB CDC-ACM to UART bridge based on the Renesas RA2L2 MCU, supporting baud
+rates up to 1.5 Mbps.