diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7641def
--- /dev/null
+++ b/README.md
@@ -0,0 +1,9 @@
+This code was made for a LOLIN32 board, which says 'LOIN32' on its board.
+This indicates a Chinese rip-off, but we haven't told him yet.
+
+# Tools
+
+Besides the writers, the `arduino` package.
+You'll need to be in the `dialout` group to use it.
+
+> sudo usermod -aG dialout $USER