diff --git a/doorbell/klingel_sender_nano_serial/klingel_sender_nano_serial.fzz b/doorbell/klingel_sender_nano_serial/klingel_sender_nano_serial.fzz
index f31fc64..f5ad60b 100644
Binary files a/doorbell/klingel_sender_nano_serial/klingel_sender_nano_serial.fzz and b/doorbell/klingel_sender_nano_serial/klingel_sender_nano_serial.fzz differ