diff --git a/.gitignore b/.gitignore
index fa92e1aa..b95dcaad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,8 +5,6 @@ table.py
 
 .DS_Store
 
-.DS_Store
-
 reference/hardware/v0.2/~$schematic v0.2_bom.xlsx
 
 reference/hardware/v0.4/gerbers/Archive.zip
@@ -24,4 +22,5 @@ reference/hardware/v0.4/gerbers/Archive.zip
 .vscode/launch.json
 .vscode/.browse.c_cpp.db*
 speeduino/board_samd21*
-reference/doxygen
\ No newline at end of file
+reference/doxygen
+speeduino.ino.cpp
diff --git a/.pio/build/project.checksum b/.pio/build/project.checksum
deleted file mode 100644
index d4d7073b..00000000
--- a/.pio/build/project.checksum
+++ /dev/null
@@ -1 +0,0 @@
-e75d053adb61abb85da3f6fe8970696475c7e228
\ No newline at end of file