diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..d216aa9a45bee325f5e4d5f620c3a62f4b2883e4
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+controller/build/
diff --git a/README.md b/README.md
index 6a63f5f5097ee440b8038723f14ed41a541019b7..aae6c095aa8f71a599ac5d926d9df56b04ce858c 100644
--- a/README.md
+++ b/README.md
@@ -18,8 +18,9 @@ electrical components of the setup.
 
 - Manual (potentiometer) or automatic (serial) control of the BLDCs.
 - Both BLDCs run at the same speed (same flapping frequency on each module).
-- Phase difference manually set before the experiment by changing the initial
-  position of the wings.
+- It is impossible for the BLDCs to keep an exact constant rotation speed during
+  the entire run. The phase offset cannot be set precisely and will evolve
+  during the entire run.
 
 _Note: A maximum rotation speed is imposed to the BLDC by the ESC. This value
 has been manually set for each ESC using the ESC's terminal (JETIBOX). The
@@ -107,7 +108,7 @@ measured and deactivate the calibration procedure altogether by putting
 
 ## Schematics
 
-To Do (in January 2023)
+To Do
 
 -------
 [^1]: Discontinued by manufacturer.