diff --git a/TODO.md b/TODO.md
index 74e3910..a19d445 100644
--- a/TODO.md
+++ b/TODO.md
@@ -10,6 +10,7 @@
 * Remove unused bits in general.
 * Mirrors of all submodules.
 * Graphics, e.g. `logo.py`.
+* rm accelerometer, Bosch BMA421.
 
 # Time
 * Accurate within a couple seconds. `;)`