diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..92817f5
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+out/* linguist-vendored
+*.kicad_pcb linguist-detectable=true
+*.sch linguist-detectable=true