diff --git a/app/boards/shields/reviung53/Kconfig.defconfig b/app/boards/shields/reviung53/Kconfig.defconfig
new file mode 100644
index 00000000..efac69b7
--- /dev/null
+++ b/app/boards/shields/reviung53/Kconfig.defconfig
@@ -0,0 +1,9 @@
+# Copyright (c) 2023 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+if SHIELD_REVIUNG53
+
+config ZMK_KEYBOARD_NAME
+ default "Reviung53"
+
+endif
diff --git a/app/boards/shields/reviung53/Kconfig.shield b/app/boards/shields/reviung53/Kconfig.shield
new file mode 100644
index 00000000..0b0613e2
--- /dev/null
+++ b/app/boards/shields/reviung53/Kconfig.shield
@@ -0,0 +1,5 @@
+# Copyright (c) 2023 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+config SHIELD_REVIUNG53
+ def_bool $(shields_list_contains,reviung53)
diff --git a/app/boards/shields/reviung53/boards/nice_nano.overlay b/app/boards/shields/reviung53/boards/nice_nano.overlay
new file mode 100644
index 00000000..4df91903
--- /dev/null
+++ b/app/boards/shields/reviung53/boards/nice_nano.overlay
@@ -0,0 +1,47 @@
+#include <dt-bindings/led/led.h>
+
+&pinctrl {
+ spi3_default: spi3_default {
+ group1 {
+ psels = <NRF_PSEL(SPIM_MOSI, 0, 6)>;
+ };
+ };
+
+ spi3_sleep: spi3_sleep {
+ group1 {
+ psels = <NRF_PSEL(SPIM_MOSI, 0, 6)>;
+ low-power-enable;
+ };
+ };
+};
+
+&spi3 {
+ compatible = "nordic,nrf-spim";
+ status = "okay";
+
+ pinctrl-0 = <&spi3_default>;
+ pinctrl-1 = <&spi3_sleep>;
+ pinctrl-names = "default", "sleep";
+
+ led_strip: ws2812@0 {
+ compatible = "worldsemi,ws2812-spi";
+ label = "WS2812";
+
+ /* SPI */
+ reg = <0>; /* ignored, but necessary for SPI bindings */
+ spi-max-frequency = <4000000>;
+
+ /* WS2812 */
+ chain-length = <10>;
+ 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/reviung53/boards/nice_nano_v2.overlay b/app/boards/shields/reviung53/boards/nice_nano_v2.overlay
new file mode 100644
index 00000000..4df91903
--- /dev/null
+++ b/app/boards/shields/reviung53/boards/nice_nano_v2.overlay
@@ -0,0 +1,47 @@
+#include <dt-bindings/led/led.h>
+
+&pinctrl {
+ spi3_default: spi3_default {
+ group1 {
+ psels = <NRF_PSEL(SPIM_MOSI, 0, 6)>;
+ };
+ };
+
+ spi3_sleep: spi3_sleep {
+ group1 {
+ psels = <NRF_PSEL(SPIM_MOSI, 0, 6)>;
+ low-power-enable;
+ };
+ };
+};
+
+&spi3 {
+ compatible = "nordic,nrf-spim";
+ status = "okay";
+
+ pinctrl-0 = <&spi3_default>;
+ pinctrl-1 = <&spi3_sleep>;
+ pinctrl-names = "default", "sleep";
+
+ led_strip: ws2812@0 {
+ compatible = "worldsemi,ws2812-spi";
+ label = "WS2812";
+
+ /* SPI */
+ reg = <0>; /* ignored, but necessary for SPI bindings */
+ spi-max-frequency = <4000000>;
+
+ /* WS2812 */
+ chain-length = <10>;
+ 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/reviung53/reviung53.conf b/app/boards/shields/reviung53/reviung53.conf
new file mode 100644
index 00000000..289f070b
--- /dev/null
+++ b/app/boards/shields/reviung53/reviung53.conf
@@ -0,0 +1,3 @@
+# Uncomment the following lines to enable RGB underglow
+# CONFIG_ZMK_RGB_UNDERGLOW=y
+# CONFIG_WS2812_STRIP=y
diff --git a/app/boards/shields/reviung53/reviung53.keymap b/app/boards/shields/reviung53/reviung53.keymap
new file mode 100644
index 00000000..d00ca6b9
--- /dev/null
+++ b/app/boards/shields/reviung53/reviung53.keymap
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2023 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <behaviors.dtsi>
+#include <dt-bindings/zmk/keys.h>
+#include <dt-bindings/zmk/bt.h>
+#include <dt-bindings/zmk/rgb.h>
+
+/ {
+ conditional_layers {
+ compatible = "zmk,conditional-layers";
+ tri_layer {
+ if-layers = <1 2>;
+ then-layer = <3>;
+ };
+ };
+
+ keymap {
+ compatible = "zmk,keymap";
+
+ default_layer {
+// ----------------------------------------------------------------------------------------
+// | | | ESC | F1 | F2 | F3 | F4 | F5 | F6 | F7 | F8 | DEL |
+// | TAB | Q | W | E | R | T | Y | U | I | O | P | BKSP |
+// | CAPS | A | S | D | F | G | H | J | K | L | ; | RET |
+// | SHFT | Z | X | C | V | B | N | M | , | . | SHFT(/) |
+// | CTRL | GUI | ALT | LOWER(SPACE) | RAISE(SPACE)| ALT | GUI | CTRL(\) |
+// |
+ bindings = <
+ &kp ESC &kp F1 &kp F2 &kp F3 &kp F4 &kp F5 &kp F6 &kp F7 &kp F8 &kp DEL
+ &kp TAB &kp Q &kp W &kp E &kp R &kp T &kp Y &kp U &kp I &kp O &kp P &kp BSPC
+ &kp CAPS &kp A &kp S &kp D &kp F &kp G &kp H &kp J &kp K &kp L &kp SEMI &kp RET
+ &kp LSHFT &kp Z &kp X &kp C &kp V &kp B &kp N &kp M &kp COMMA &kp DOT &mt RSHFT FSLH
+ &kp LCTRL &kp LCMD &kp LALT < 1 SPACE < 2 SPACE &kp RALT &kp RCMD &mt RCTRL BSLH
+ >;
+ };
+
+ lower_layer {
+// --------------------------------------------------------------------------------------------
+// | | | | F9 | F10 | F11 | F12 | INS | PAU | SCR | PSCR | |
+// | ~ | ! | @ | # | $ | % | ^ | & | * | ( | ) | |
+// | NAV | | | | | | | _ | + | { | } | " |
+// | | | | | | | | | | | ? |
+// | | | | | | | | | |
+// |
+ bindings = <
+ &trans &kp F9 &kp F10 &kp F11 &kp F12 &kp INS &kp PAUSE_BREAK &kp SLCK &kp PSCRN &trans
+ &kp TILDE &kp EXCL &kp AT &kp HASH &kp DLLR &kp PRCNT &kp CARET &kp AMPS &kp ASTRK &kp LPAR &kp RPAR &trans
+ &mo 4 &none &none &none &none &none &none &kp UNDER &kp PLUS &kp LBRC &kp RBRC &kp DQT
+ &trans &none &none &none &none &none &none &none &none &none &kp QMARK
+ &trans &trans &trans &trans &trans &trans &trans &kp PIPE
+ >;
+ };
+
+ raise_layer {
+// --------------------------------------------------------------------------------------
+// | | | | F9 | F10 | F11 | F12 | MUTE | VOL+ | VOL- | PLAY | |
+// | ` | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | |
+// | NAV | | | | | | | - | = | [ | ] | ' |
+// | | | | | | | | + | < | > | : |
+// | | | | | | | | | |
+// |
+ bindings = <
+ &trans &kp F9 &kp F10 &kp F11 &kp F12 &kp C_MUTE &kp C_VOL_UP &kp C_VOL_DN &kp C_PLAY &trans
+ &kp GRAVE &kp N1 &kp N2 &kp N3 &kp N4 &kp N5 &kp N6 &kp N7 &kp N8 &kp N9 &kp N0 &trans
+ &mo 4 &none &none &none &none &none &none &kp MINUS &kp EQUAL &kp LBKT &kp RBKT &kp SQT
+ &trans &none &none &none &none &none &none &kp PLUS &kp LT &kp GT &kp COLON
+ &trans &trans &trans &trans &trans &trans &trans &kp PIPE
+ >;
+ };
+
+ adjust_layer {
+// ------------------------------------------------------------------------------------------------------------------------
+// | | | BT CLR | BT1 | BT2 | BT3 | BT4 | BT5 | | | | BT CLR |
+// | RGB BRI+ | RGB SAT+ | RGB HUE+ | RGB ANI+ | | RGB TOG | | | | | | |
+// | RGB BRI- | RGB SAT- | RGB HUE- | RGB ANI- | | | | | | | | |
+// | | | | | | | BOOT | | | | |
+// | | | | | | | | |
+// |
+ bindings = <
+ &bt BT_CLR &bt BT_SEL 0 &bt BT_SEL 1 &bt BT_SEL 2 &bt BT_SEL 3 &bt BT_SEL 4 &none &none &none &bt BT_CLR
+ &rgb_ug RGB_BRI &rgb_ug RGB_SAI &rgb_ug RGB_HUI &rgb_ug RGB_EFF &none &rgb_ug RGB_TOG &none &none &none &none &none &none
+ &rgb_ug RGB_BRD &rgb_ug RGB_SAD &rgb_ug RGB_HUD &rgb_ug RGB_EFR &none &none &none &none &none &none &none &none
+ &trans &none &none &none &none &none &bootloader &none &none &none &none
+ &trans &trans &trans &trans &trans &none &none &none
+ >;
+ };
+
+ nav_layer {
+// ------------------------------------------------------------------------------------------------------------------------
+// | | | ESC | | | | | | | | | DEL |
+// | TAB | | UP | | | | | | | | | BSPC |
+// | NAV | LEFT | DOWN | RIGHT | | | LEFT | DOWN | UP | RIGHT | | ENTER |
+// | SHIFT | | | | | | HOME | END | PGUP | PGDN | SHIFT |
+// | CTRL | GUI | ALT | SPACE | SPACE | ALT | GUI | CTRL |
+// |
+ bindings = <
+ &kp ESC &none &none &none &none &none &none &none &none &kp DEL
+ &kp TAB &none &kp UP &none &none &none &none &none &none &none &none &kp BSPC
+ &trans &kp LEFT &kp DOWN &kp RIGHT &none &none &kp LEFT &kp DOWN &kp UP &kp RIGHT &none &kp RET
+ &kp LSHFT &none &none &none &none &none &kp HOME &kp END &kp PG_UP &kp PG_DN &kp RSHFT
+ &kp LCTRL &kp LCMD &kp LALT &kp SPACE &kp SPACE &kp LALT &kp RCMD &kp RCTRL
+ >;
+ };
+ };
+};
\ No newline at end of file
diff --git a/app/boards/shields/reviung53/reviung53.overlay b/app/boards/shields/reviung53/reviung53.overlay
new file mode 100644
index 00000000..213b3b81
--- /dev/null
+++ b/app/boards/shields/reviung53/reviung53.overlay
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2023 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <dt-bindings/zmk/matrix_transform.h>
+
+/ {
+ chosen {
+ zmk,kscan = &kscan0;
+ zmk,matrix_transform = &default_transform;
+ };
+
+ default_transform: keymap_transform_0 {
+ compatible = "zmk,matrix-transform";
+ columns = <8>;
+ rows = <7>;
+
+ map = <
+ RC(0,2) RC(0,3) RC(0,4) RC(0,5) RC(0,6) RC(0,7) RC(4,0) RC(4,1) RC(4,2) RC(4,3)
+RC(1,0) RC(1,1) RC(1,2) RC(1,3) RC(1,4) RC(1,5) RC(1,6) RC(1,7) RC(4,4) RC(4,5) RC(4,6) RC(4,7)
+RC(2,0) RC(2,1) RC(2,2) RC(2,3) RC(2,4) RC(2,5) RC(2,6) RC(2,7) RC(5,0) RC(5,1) RC(5,2) RC(5,3)
+RC(3,0) RC(3,1) RC(3,2) RC(3,3) RC(3,4) RC(3,5) RC(3,6) RC(3,7) RC(5,4) RC(5,5) RC(5,6)
+RC(6,0) RC(6,1) RC(6,2) RC(6,3) RC(6,4) RC(6,5) RC(6,6) RC(6,7)
+ >;
+ };
+
+ kscan0: kscan_0 {
+ compatible = "zmk,kscan-gpio-matrix";
+ label = "KSCAN";
+ diode-direction = "col2row";
+
+ col-gpios
+ = <&pro_micro 21 GPIO_ACTIVE_HIGH>
+ , <&pro_micro 20 GPIO_ACTIVE_HIGH>
+ , <&pro_micro 19 GPIO_ACTIVE_HIGH>
+ , <&pro_micro 18 GPIO_ACTIVE_HIGH>
+ , <&pro_micro 15 GPIO_ACTIVE_HIGH>
+ , <&pro_micro 14 GPIO_ACTIVE_HIGH>
+ , <&pro_micro 16 GPIO_ACTIVE_HIGH>
+ , <&pro_micro 10 GPIO_ACTIVE_HIGH>
+ ;
+
+ row-gpios
+ = <&pro_micro 3 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+ , <&pro_micro 4 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+ , <&pro_micro 5 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+ , <&pro_micro 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+ , <&pro_micro 7 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+ , <&pro_micro 8 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+ , <&pro_micro 9 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
+ ;
+
+ };
+};
diff --git a/app/boards/shields/reviung53/reviung53.zmk.yml b/app/boards/shields/reviung53/reviung53.zmk.yml
new file mode 100644
index 00000000..e670755c
--- /dev/null
+++ b/app/boards/shields/reviung53/reviung53.zmk.yml
@@ -0,0 +1,9 @@
+file_format: "1"
+id: reviung53
+name: REVIUNG53
+type: shield
+url: https://github.com/gtips/reviung/tree/master/reviung53
+requires: [pro_micro]
+features:
+ - keys
+ - underglow