diff --git a/firmware/boards/buzzy_nrf52840.conf b/firmware/boards/buzzy_nrf52840.conf
new file mode 100644
index 0000000..9d58850
--- /dev/null
+++ b/firmware/boards/buzzy_nrf52840.conf
@@ -0,0 +1,7 @@
+### Console / Logging: RTT (no UART on buzzy)
+CONFIG_UART_CONSOLE=n
+CONFIG_CONSOLE=y
+CONFIG_RTT_CONSOLE=y
+CONFIG_USE_SEGGER_RTT=y
+CONFIG_LOG_BACKEND_RTT=y
+CONFIG_LOG_BACKEND_UART=n
diff --git a/firmware/boards/nrf52840dk_nrf52840.conf b/firmware/boards/nrf52840dk_nrf52840.conf
new file mode 100644
index 0000000..f770b15
--- /dev/null
+++ b/firmware/boards/nrf52840dk_nrf52840.conf
@@ -0,0 +1,4 @@
+### Console / Logging: UART
+CONFIG_UART_CONSOLE=y
+CONFIG_LOG_BACKEND_UART=y
+CONFIG_LOG_BACKEND_RTT=n