diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e428255
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,12 @@
+# MakeCode
+built
+node_modules
+yotta_modules
+yotta_targets
+pxt_modules
+.pxt
+_site
+*.db
+*.tgz
+.header.json
+.simstate.json