diff --git a/README.md b/README.md
index b23567f..2728e0e 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,8 @@ nrfutil install device
 ```bash
 west build -p auto -b nrf52dk/nrf52832 firmware/blinky
 west build -p auto -b nrf52dk/nrf52832 firmware/app
+west build -p auto -b mellifera_rev1 firmware/blinky -- -DBOARD_ROOT=$(pwd)/firmware
+west build -p auto -b mellifera_rev1 firmware/app -- -DBOARD_ROOT=$(pwd)/firmware
 
 west flash
 ```
diff --git a/firmware/blinky/src/main.c b/firmware/blinky/src/main.c
index a5f5954..3467466 100644
--- a/firmware/blinky/src/main.c
+++ b/firmware/blinky/src/main.c
@@ -9,7 +9,7 @@
 #include <zephyr/drivers/gpio.h>
 
 /* 1000 msec = 1 sec */
-#define SLEEP_TIME_MS 100
+#define SLEEP_TIME_MS 1000
 
 /* The devicetree node identifier for the "led0" alias. */
 #define LED0_NODE DT_ALIAS(led0)