diff --git a/README.md b/README.md
index a94f866abd78804889419da7d03319f81edefa42..c212a02fd752d349d6c4460235a823eae3a6650b 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,10 @@ Vibora rapida muerta
 
 ### Components
 Reuse of old side and dpi buttons (separate board with 5-pin cable).
-Reuse of old (mouse1/2) D2FC switches
+
+Reuse of old (mouse1/2) D2FC switches.
+
+Custom nucleo board with MCU STM32F411RETx.
 
 ### Electrical specs
 TODO