Using the MCP2221 with the Thonny Python IDE should be possible with the following caveats:
- Thonny must be installed into the same Python environment where Blinka was installed.
- The
BLINKA_MCP2221environment variable must be set.
To set the BLINKA_MCP2221 environment variable:
- In Thonny, go to Tools -> Options...
-
Go to the General tab in the Options dialog.
-
Set BLINKA_MCP2221=1 in the Environment variables.
-
Restart Thonny.
Page last edited June 25, 2025
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