diff --git a/.gitignore b/.gitignore
index c9b4702f..e0e9abe9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,4 @@ Makefile.user
 node_modules
 scripts/clean-ifaces/*.plist
 .vscode/c_cpp_properties.json
+TAGS
diff --git a/boards/dadamachines-automat/board.mk b/boards/dadamachines-automat/board.mk
new file mode 100644
index 00000000..0a90fdf6
--- /dev/null
+++ b/boards/dadamachines-automat/board.mk
@@ -0,0 +1,2 @@
+CHIP_FAMILY = samd21
+CHIP_VARIANT = SAMD21G18A
diff --git a/boards/eitech-robotics/board.mk b/boards/eitech-robotics/board.mk
new file mode 100644
index 00000000..0a90fdf6
--- /dev/null
+++ b/boards/eitech-robotics/board.mk
@@ -0,0 +1,2 @@
+CHIP_FAMILY = samd21
+CHIP_VARIANT = SAMD21G18A
diff --git a/boards/sensebox-mcu/board.mk b/boards/sensebox-mcu/board.mk
new file mode 100644
index 00000000..0a90fdf6
--- /dev/null
+++ b/boards/sensebox-mcu/board.mk
@@ -0,0 +1,2 @@
+CHIP_FAMILY = samd21
+CHIP_VARIANT = SAMD21G18A
diff --git a/boards/wattuino-rc/board.mk b/boards/wattuino-rc/board.mk
new file mode 100644
index 00000000..0a90fdf6
--- /dev/null
+++ b/boards/wattuino-rc/board.mk
@@ -0,0 +1,2 @@
+CHIP_FAMILY = samd21
+CHIP_VARIANT = SAMD21G18A