diff --git a/app/boards/shields/eternal_keypad/boards/nice_nano_v2.overlay b/app/boards/shields/eternal_keypad/boards/nice_nano_v2.overlay
new file mode 100644
index 00000000..61950d18
--- /dev/null
+++ b/app/boards/shields/eternal_keypad/boards/nice_nano_v2.overlay
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2022  The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <dt-bindings/led/led.h>
+
+&spi1 {
+	compatible = "nordic,nrf-spim";
+	/* Cannot be used together with i2c0. */
+	status = "okay";
+	mosi-pin = <6>;
+	// Unused pins, needed for SPI definition, but not used by the ws2812 driver itself.
+	sck-pin = <5>;
+	miso-pin = <7>;
+
+	led_strip: ws2812@0 {
+		compatible = "worldsemi,ws2812-spi";
+		label = "SK6812mini";
+
+		/* SPI */
+		reg = <0>; /* ignored, but necessary for SPI bindings */
+		spi-max-frequency = <4000000>;
+
+		/* WS2812 */
+		chain-length = <8>;
+		spi-one-frame = <0x70>;
+		spi-zero-frame = <0x40>;
+		color-mapping = <LED_COLOR_ID_GREEN LED_COLOR_ID_RED LED_COLOR_ID_BLUE>;
+	};
+};
+
+/ {
+	chosen {
+		zmk,underglow = &led_strip;
+	};
+};
diff --git a/app/boards/shields/eternal_keypad/eternal_keypad.conf b/app/boards/shields/eternal_keypad/eternal_keypad.conf
index ee484e61..65fa2955 100644
--- a/app/boards/shields/eternal_keypad/eternal_keypad.conf
+++ b/app/boards/shields/eternal_keypad/eternal_keypad.conf
@@ -3,3 +3,7 @@
 
 # Uncomment to turn on logging, and set ZMK logging to debug output
 # CONFIG_ZMK_USB_LOGGING=y
+
+# Uncomment the following lines to enable RGB underglow
+# CONFIG_ZMK_RGB_UNDERGLOW=y
+# CONFIG_WS2812_STRIP=y
diff --git a/app/boards/shields/eternal_keypad/eternal_keypad.keymap b/app/boards/shields/eternal_keypad/eternal_keypad.keymap
index 85ece157..0f3eda7b 100644
--- a/app/boards/shields/eternal_keypad/eternal_keypad.keymap
+++ b/app/boards/shields/eternal_keypad/eternal_keypad.keymap
@@ -8,6 +8,7 @@
 #include <dt-bindings/zmk/keys.h>
 #include <dt-bindings/zmk/bt.h>
 #include <dt-bindings/zmk/outputs.h>
+#include <dt-bindings/zmk/rgb.h>
 
 #define BASE        0
 #define ARROW       1
@@ -34,11 +35,11 @@
 
     arrow_layer {
       bindings = <
-                    &bt BT_SEL 0 &bt BT_SEL 1 &trans     &trans    &trans  &out OUT_USB &out OUT_BLE
-                    &trans       &trans       &kp UP     &trans    &trans  &trans       &trans
-        &bt BT_CLR  &trans       &kp LEFT     &kp DOWN   &kp RIGHT &trans  &trans       &trans
-        &reset      &trans       &trans       &trans     &trans    &trans  &trans       &trans
-        &bootloader &trans       &trans       &trans               &trans               &trans
+                    &bt BT_SEL 0 &bt BT_SEL 1 &trans     &trans    &trans           &out OUT_USB     &out OUT_BLE
+                    &trans       &trans       &kp UP     &trans    &rgb_ug RGB_TOG  &rgb_ug RGB_HUI  &rgb_ug RGB_HUD
+        &bt BT_CLR  &trans       &kp LEFT     &kp DOWN   &kp RIGHT &trans           &rgb_ug RGB_BRI  &rgb_ug RGB_BRD
+        &reset      &trans       &trans       &trans     &trans    &trans           &rgb_ug RGB_EFF  &rgb_ug RGB_EFR
+        &bootloader &trans       &trans       &trans               &trans                            &trans
       >;
     };
 
diff --git a/app/boards/shields/eternal_keypad/eternal_keypad.zmk.yml b/app/boards/shields/eternal_keypad/eternal_keypad.zmk.yml
index dab6f349..c5c86bc7 100644
--- a/app/boards/shields/eternal_keypad/eternal_keypad.zmk.yml
+++ b/app/boards/shields/eternal_keypad/eternal_keypad.zmk.yml
@@ -6,3 +6,4 @@ url: https://github.com/duckyb/eternal-keypad
 requires: [pro_micro]
 features:
   - keys
+  - underglow
diff --git a/app/boards/shields/eternal_keypad/eternal_keypad_lefty.keymap b/app/boards/shields/eternal_keypad/eternal_keypad_lefty.keymap
index ac5ce0a4..e1bddbad 100644
--- a/app/boards/shields/eternal_keypad/eternal_keypad_lefty.keymap
+++ b/app/boards/shields/eternal_keypad/eternal_keypad_lefty.keymap
@@ -8,6 +8,7 @@
 #include <dt-bindings/zmk/keys.h>
 #include <dt-bindings/zmk/bt.h>
 #include <dt-bindings/zmk/outputs.h>
+#include <dt-bindings/zmk/rgb.h>
 
 #define BASE        0
 #define ARROW       1
@@ -34,11 +35,11 @@
 
     arrow_layer {
       bindings = <
-                    &bt BT_SEL 0 &bt BT_SEL 1 &trans     &trans    &trans  &out OUT_USB &out OUT_BLE
-                    &trans       &trans       &kp UP     &trans    &trans  &trans       &trans
-        &bt BT_CLR  &trans       &kp RIGHT    &kp DOWN   &kp RIGHT &trans  &trans       &trans
-        &reset      &trans       &trans       &trans     &trans    &trans  &trans       &trans
-        &bootloader &trans       &trans       &trans               &trans               &trans
+                    &bt BT_SEL 0 &bt BT_SEL 1 &trans     &trans    &trans           &out OUT_USB     &out OUT_BLE
+                    &trans       &trans       &kp UP     &trans    &rgb_ug RGB_TOG  &rgb_ug RGB_HUI  &rgb_ug RGB_HUD
+        &bt BT_CLR  &trans       &kp RIGHT    &kp DOWN   &kp RIGHT &trans           &rgb_ug RGB_BRI  &rgb_ug RGB_BRD
+        &reset      &trans       &trans       &trans     &trans    &trans           &rgb_ug RGB_EFF  &rgb_ug RGB_EFR
+        &bootloader &trans       &trans       &trans               &trans                            &trans
       >;
     };
 
diff --git a/app/boards/shields/eternal_keypad/eternal_keypad_lefty.zmk.yml b/app/boards/shields/eternal_keypad/eternal_keypad_lefty.zmk.yml
index e7c4c174..5e2426df 100644
--- a/app/boards/shields/eternal_keypad/eternal_keypad_lefty.zmk.yml
+++ b/app/boards/shields/eternal_keypad/eternal_keypad_lefty.zmk.yml
@@ -6,3 +6,4 @@ url: https://github.com/duckyb/eternal-keypad
 requires: [pro_micro]
 features:
   - keys
+  - underglow