diff --git a/en/firmware/epicardium_api_development.md b/en/firmware/epicardium_api_development.md
deleted file mode 100644
index 62357ee855d59dc8be565e341c2dcfc10e4b8e35..0000000000000000000000000000000000000000
--- a/en/firmware/epicardium_api_development.md
+++ /dev/null
@@ -1,6 +0,0 @@
----
-title: Epicardium API Development
----
-
-## Obsolete:
-Please tend to https://firmware.card10.badge.events.ccc.de/epicardium/overview.html
\ No newline at end of file
diff --git a/en/firmware/memorymap.md b/en/firmware/memorymap.md
deleted file mode 100644
index c042743f6c630fcf43680d81fa8c10afa4d98633..0000000000000000000000000000000000000000
--- a/en/firmware/memorymap.md
+++ /dev/null
@@ -1,6 +0,0 @@
----
-title: Memory Map
----
-
-## Obsolete:
-Please tend to https://firmware.card10.badge.events.ccc.de/memorymap.html
\ No newline at end of file
diff --git a/en/firmware/pycardium_modules.md b/en/firmware/pycardium_modules.md
deleted file mode 100644
index 609d5857eabf5568695c94c5d078d312d5a03efa..0000000000000000000000000000000000000000
--- a/en/firmware/pycardium_modules.md
+++ /dev/null
@@ -1,6 +0,0 @@
----
-title: Pycardium Modules Development
----
-
-## Obsolete
-Please tend to https://firmware.card10.badge.events.ccc.de/pycardium-guide.html