diff --git a/include/tabby/avr/buffer.h b/include/tabby/avr/buffer.h
new file mode 100644
index 0000000..ef3dbc5
--- /dev/null
+++ b/include/tabby/avr/buffer.h
@@ -0,0 +1,21 @@
+#ifndef _TABBY_AVR_BUFFER_H
+#define _TABBY_AVR_BUFFER_H
+
+#include <sys/types.h>
+
+#include <tabby/packet.h>
+
+#define TABBY_AVR_BUFFER_SIZE 1024
+
+typedef struct _tabby_avr_buffer {
+    uint16_t len,
+             cur;
+
+    union {
+        tabby_packet header;
+
+        uint8_t data[TABBY_AVR_BUFFER_SIZE];
+    };
+} tabby_avr_buffer;
+
+#endif /* _TABBY_AVR_BUFFER_H */