diff --git a/keyboards/4pplet/eagle_viper_rep/info.json b/keyboards/4pplet/eagle_viper_rep/info.json
new file mode 100644
index 0000000000..dced671bca
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/info.json
@@ -0,0 +1,77 @@
+{
+ "keyboard_name": "Eagle/Viper Rep",
+ "url": "https://github.com/4pplet/eagle_viper_rep",
+ "maintainer": "4pplet",
+ "width": 15,
+ "height": 5,
+ "layouts": {
+ "LAYOUT_all": {
+ "layout": [
+ { "label": "Esc", "x": 0, "y": 0 },
+ { "label": "!", "x": 1, "y": 0 },
+ { "label": "@", "x": 2, "y": 0 },
+ { "label": "#", "x": 3, "y": 0 },
+ { "label": "$", "x": 4, "y": 0 },
+ { "label": "%", "x": 5, "y": 0 },
+ { "label": "^", "x": 6, "y": 0 },
+ { "label": "&", "x": 7, "y": 0 },
+ { "label": "*", "x": 8, "y": 0 },
+ { "label": "(", "x": 9, "y": 0 },
+ { "label": ")", "x": 10, "y": 0 },
+ { "label": "_", "x": 11, "y": 0 },
+ { "label": "+", "x": 12, "y": 0 },
+ { "label": "|", "x": 13, "y": 0 },
+ { "label": "~", "x": 14, "y": 0 },
+ { "label": "Tab", "x": 0, "y": 1, "w": 1.5 },
+ { "label": "Q", "x": 1.5, "y": 1 },
+ { "label": "W", "x": 2.5, "y": 1 },
+ { "label": "E", "x": 3.5, "y": 1 },
+ { "label": "R", "x": 4.5, "y": 1 },
+ { "label": "T", "x": 5.5, "y": 1 },
+ { "label": "Y", "x": 6.5, "y": 1 },
+ { "label": "U", "x": 7.5, "y": 1 },
+ { "label": "I", "x": 8.5, "y": 1 },
+ { "label": "O", "x": 9.5, "y": 1 },
+ { "label": "P", "x": 10.5, "y": 1 },
+ { "label": "{", "x": 11.5, "y": 1 },
+ { "label": "}", "x": 12.5, "y": 1 },
+ { "label": "Backsp.", "x": 13.5, "y": 1, "w": 1.5 },
+ { "label": "Caps Lock", "x": 0, "y": 2, "w": 1.75 },
+ { "label": "A", "x": 1.75, "y": 2 },
+ { "label": "S", "x": 2.75, "y": 2 },
+ { "label": "D", "x": 3.75, "y": 2 },
+ { "label": "F", "x": 4.75, "y": 2 },
+ { "label": "G", "x": 5.75, "y": 2 },
+ { "label": "H", "x": 6.75, "y": 2 },
+ { "label": "J", "x": 7.75, "y": 2 },
+ { "label": "K", "x": 8.75, "y": 2 },
+ { "label": "L", "x": 9.75, "y": 2 },
+ { "label": ":", "x": 10.75, "y": 2 },
+ { "label": "\"", "x": 11.75, "y": 2 },
+ { "label": "Enter", "x": 12.75, "y": 2, "w": 2.25 },
+ { "label": "Shift", "x": 0, "y": 3, "w": 1.25 },
+ { "label": "|", "x": 1.25, "y": 3 },
+ { "label": "Z", "x": 2.25, "y": 3 },
+ { "label": "X", "x": 3.25, "y": 3 },
+ { "label": "C", "x": 4.25, "y": 3 },
+ { "label": "V", "x": 5.25, "y": 3 },
+ { "label": "B", "x": 6.25, "y": 3 },
+ { "label": "N", "x": 7.25, "y": 3 },
+ { "label": "M", "x": 8.25, "y": 3 },
+ { "label": "<", "x": 9.25, "y": 3 },
+ { "label": ">", "x": 10.25, "y": 3 },
+ { "label": "?", "x": 11.25, "y": 3 },
+ { "label": "Shift", "x": 12.25, "y": 3, "w": 1.75 },
+ { "label": "Fn", "x": 14, "y": 3, "w": 1 },
+ { "label": "Ctrl", "x": 0, "y": 4, "w": 1.25 },
+ { "label": "Win", "x": 1.25, "y": 4, "w": 1.25 },
+ { "label": "Alt", "x": 2.5, "y": 4, "w": 1.25 },
+ { "label": "Space", "x": 3.75, "y": 4, "w": 6.25 },
+ { "label": "Alt", "x": 10, "y": 4, "w": 1.25 },
+ { "label": "Menu", "x": 11.25, "y": 4, "w": 1.25 },
+ { "label": "Win", "x": 12.5, "y": 4, "w": 1.25 },
+ { "label": "Ctrl", "x": 13.75, "y": 4, "w": 1.25 }
+ ]
+ }
+ }
+}
diff --git a/keyboards/4pplet/eagle_viper_rep/keymaps/default/keymap.c b/keyboards/4pplet/eagle_viper_rep/keymaps/default/keymap.c
new file mode 100644
index 0000000000..addf690e4a
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/keymaps/default/keymap.c
@@ -0,0 +1,34 @@
+/*
+Copyright 2021 Stefan Sundin "4pplet" <4pplet@protonmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+// main layer
+[0] = LAYOUT_all(
+ KC_ESC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, KC_BSLS, KC_GRV,
+ KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSPC,
+ KC_LCTRL, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, KC_NUHS, KC_ENT,
+ KC_LSFT, KC_NUBS, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT, MO(1),
+ KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_NO, KC_RALT, KC_RGUI, MO(1)),
+ // basic function layer
+[1] = LAYOUT_all(
+ RESET, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_UP, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_LEFT, KC_DOWN, KC_RIGHT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS)
+};
diff --git a/keyboards/4pplet/eagle_viper_rep/keymaps/via/keymap.c b/keyboards/4pplet/eagle_viper_rep/keymaps/via/keymap.c
new file mode 100644
index 0000000000..70e55ceb7e
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/keymaps/via/keymap.c
@@ -0,0 +1,55 @@
+/*
+Copyright 2021 Stefan Sundin "4pplet" <4pplet@protonmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+// main layer
+[0] = LAYOUT_all(
+ KC_ESC, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_MINS, KC_EQL, KC_BSLS, KC_GRV,
+ KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_LBRC, KC_RBRC, KC_BSPC,
+ KC_LCTRL, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, KC_NUHS, KC_ENT,
+ KC_LSFT, KC_NUBS, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_RSFT, MO(1),
+ KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_NO, KC_RALT, KC_RGUI, MO(1)),
+// basic function layer
+[1] = LAYOUT_all(
+ RESET, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_UP, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_LEFT, KC_DOWN, KC_RIGHT, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+// extra layer for VIA
+[2] = LAYOUT_all(
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+// extra layer for VIA
+[3] = LAYOUT_all(
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+// extra layer for VIA
+[4] = LAYOUT_all(
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS)
+};
diff --git a/keyboards/4pplet/eagle_viper_rep/keymaps/via/rules.mk b/keyboards/4pplet/eagle_viper_rep/keymaps/via/rules.mk
new file mode 100644
index 0000000000..1e5b99807c
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
diff --git a/keyboards/4pplet/eagle_viper_rep/readme.md b/keyboards/4pplet/eagle_viper_rep/readme.md
new file mode 100644
index 0000000000..76415fd6c0
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/readme.md
@@ -0,0 +1,19 @@
+# Viper/Eagle REP Rev A
+
+A alternative PCB for Viper and Eagle V2 and V3
+
+* Keyboard Maintainer: [4pplet](https://github.com/4pplet)
+* Hardware Supported: Viper/Eagle REP Rev A
+
+Make example for this keyboard (after setting up your build environment):
+
+ make 4pplet/eagle_viper_rep/rev_a:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+How to enter bootloader (DFU):
+* Press and hold the button on the keyboard (the small one on the same side as the MCU) for more than 1 second. The keyboard will then enter bootloader (DFU) mode and it's ready to flash the firmware.
+* Note: If holding the button a shorter time, the keyboard will just reset. If you want to exit bootloader mode without flashing a firmware, dissconnect the keyboard from your PC and reconnect it.
+
+Alternative option if the firmware is already pre-flashed:
+* Unplug your keyboard, hold down the Spacebar and B at the same time, plug in your keyboard and wait a second before releasing the keys. Bootmagic lite is enabled by default.
diff --git a/keyboards/4pplet/eagle_viper_rep/rev_a/chconf.h b/keyboards/4pplet/eagle_viper_rep/rev_a/chconf.h
new file mode 100644
index 0000000000..9e81d8c4a0
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/rev_a/chconf.h
@@ -0,0 +1,23 @@
+/* Copyright 2020 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#pragma once
+
+#define CH_CFG_ST_FREQUENCY 10000
+
+#define CH_CFG_ST_RESOLUTION 16
+
+#include_next
diff --git a/keyboards/4pplet/eagle_viper_rep/rev_a/config.h b/keyboards/4pplet/eagle_viper_rep/rev_a/config.h
new file mode 100644
index 0000000000..4edb4754e9
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/rev_a/config.h
@@ -0,0 +1,72 @@
+/*
+Copyright 2021 Stefan Sundin "4pplet" <4pplet@protonmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+#pragma once
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0x4444
+#define PRODUCT_ID 0x0007
+#define DEVICE_VER 0x0001
+#define MANUFACTURER 4pplet
+#define PRODUCT Eagle Viper REP Rev A
+
+#define MATRIX_ROWS 10
+#define MATRIX_COLS 7
+
+#define MATRIX_COL_PINS { A0, B1, B0, A4, B5, B4, B3 }
+#define MATRIX_ROW_PINS { A2, A1, B8, A10, C15, A15, B7, B6, C14, C13}
+#define DIODE_DIRECTION COL2ROW
+
+/* In switch leds */
+#define BACKLIGHT_PIN A3
+#define BACKLIGHT_PWM_DRIVER PWMD2
+#define BACKLIGHT_PWM_CHANNEL 4
+#define BACKLIGHT_PAL_MODE 2
+#define BACKLIGHT_ON_STATE 1
+#define BACKLIGHT_LEVELS 10
+#define BACKLIGHT_BREATHING TRUE
+
+/* Underglow */
+#define RGB_DI_PIN A7
+#define WS2812_SPI SPID1
+#define WS2812_SPI_MOSI_PAL_MODE 0
+#define WS2812_SPI_SCK_PIN A5
+#define WS2812_SPI_SCK_PAL_MODE 0
+#define RGBLED_NUM 16
+#define RGBLIGHT_ANIMATIONS
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/* Indicator leds */
+#define LOCK_LIGHTS TRUE
+#define DISPLAY_LAYERS TRUE
+#define CAPS_PIN B2
+#define NUM_PIN B12
+#define SCROLL_PIN B13
+#define LAYER_1 B14
+#define LAYER_2 B15
+#define LAYER_3 A8
+#define LAYER_4 A9
+#define LAYER_5 B9
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE 5
+
+/* Added extra layer for use of layer leds */
+#define DYNAMIC_KEYMAP_LAYER_COUNT 5
diff --git a/keyboards/4pplet/eagle_viper_rep/rev_a/halconf.h b/keyboards/4pplet/eagle_viper_rep/rev_a/halconf.h
new file mode 100644
index 0000000000..b0dad8d4a4
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/rev_a/halconf.h
@@ -0,0 +1,25 @@
+/* Copyright 2020 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+#pragma once
+
+#define HAL_USE_I2C FALSE
+
+#define HAL_USE_PWM TRUE
+
+#define HAL_USE_SPI TRUE
+
+#include_next
diff --git a/keyboards/4pplet/eagle_viper_rep/rev_a/mcuconf.h b/keyboards/4pplet/eagle_viper_rep/rev_a/mcuconf.h
new file mode 100644
index 0000000000..ffa97b392c
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/rev_a/mcuconf.h
@@ -0,0 +1,34 @@
+/* Copyright 2020 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see .
+ */
+
+/*
+ * This file was auto-generated by:
+ * `qmk chibios-confmigrate -i keyboards/cannonkeys/db60/mcuconf.h -r platforms/chibios/GENERIC_STM32_F072XB/configs/mcuconf.h`
+ */
+
+#pragma once
+
+#include_next
+
+#undef STM32_PWM_USE_TIM2
+#define STM32_PWM_USE_TIM2 TRUE
+
+#undef STM32_SPI_USE_SPI1
+#define STM32_SPI_USE_SPI1 TRUE
+
+/* Reallocate the SysTick timer from TIM2 to TIM3, TIM2 is used for in switch leds */
+#undef STM32_ST_USE_TIMER
+#define STM32_ST_USE_TIMER 3
diff --git a/keyboards/4pplet/eagle_viper_rep/rev_a/readme.md b/keyboards/4pplet/eagle_viper_rep/rev_a/readme.md
new file mode 100644
index 0000000000..76415fd6c0
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/rev_a/readme.md
@@ -0,0 +1,19 @@
+# Viper/Eagle REP Rev A
+
+A alternative PCB for Viper and Eagle V2 and V3
+
+* Keyboard Maintainer: [4pplet](https://github.com/4pplet)
+* Hardware Supported: Viper/Eagle REP Rev A
+
+Make example for this keyboard (after setting up your build environment):
+
+ make 4pplet/eagle_viper_rep/rev_a:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
+
+How to enter bootloader (DFU):
+* Press and hold the button on the keyboard (the small one on the same side as the MCU) for more than 1 second. The keyboard will then enter bootloader (DFU) mode and it's ready to flash the firmware.
+* Note: If holding the button a shorter time, the keyboard will just reset. If you want to exit bootloader mode without flashing a firmware, dissconnect the keyboard from your PC and reconnect it.
+
+Alternative option if the firmware is already pre-flashed:
+* Unplug your keyboard, hold down the Spacebar and B at the same time, plug in your keyboard and wait a second before releasing the keys. Bootmagic lite is enabled by default.
diff --git a/keyboards/4pplet/eagle_viper_rep/rev_a/rev_a.c b/keyboards/4pplet/eagle_viper_rep/rev_a/rev_a.c
new file mode 100644
index 0000000000..2971460bd2
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/rev_a/rev_a.c
@@ -0,0 +1,108 @@
+/*
+Copyright 2021 Stefan Sundin "4pplet" <4pplet@protonmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+#include "rev_a.h"
+
+void board_init(void) {
+ setPinInputHigh(CAPS_PIN);
+ setPinInputHigh(SCROLL_PIN);
+ setPinInputHigh(NUM_PIN);
+}
+
+/* Set indicator leds to indicate lock states */
+bool led_update_kb(led_t led_state) {
+ bool res = led_update_user(led_state);
+ if(res && LOCK_LIGHTS) {
+ if(led_state.caps_lock){
+ setPinOutput(CAPS_PIN);
+ writePin(CAPS_PIN, 0);
+ }
+ else
+ setPinInputHigh(CAPS_PIN);
+ if(led_state.scroll_lock){
+ setPinOutput(SCROLL_PIN);
+ writePin(SCROLL_PIN, 0);
+ }
+ else
+ setPinInputHigh(SCROLL_PIN);
+ if(led_state.num_lock){
+ setPinOutput(NUM_PIN);
+ writePin(NUM_PIN, 0);
+ }
+ else
+ setPinInputHigh(NUM_PIN);
+ }
+ return res;
+}
+
+layer_state_t layer_state_set_kb(layer_state_t state) {
+ state = layer_state_set_user(state);
+ if(DISPLAY_LAYERS){
+ setLayerLed(state);
+ }
+ return state;
+}
+/* Set indicator leds to indicate which layer is active */
+void setLayerLed(layer_state_t state){
+ switch(get_highest_layer(state)){
+ case 0 :
+ setPinOutput(LAYER_1);
+ writePin(LAYER_1, 0);
+ setPinInputHigh(LAYER_2);
+ setPinInputHigh(LAYER_3);
+ setPinInputHigh(LAYER_4);
+ setPinInputHigh(LAYER_5);
+ break;
+ case 1 :
+ setPinOutput(LAYER_2);
+ writePin(LAYER_2, 0);
+ setPinInputHigh(LAYER_1);
+ setPinInputHigh(LAYER_3);
+ setPinInputHigh(LAYER_4);
+ setPinInputHigh(LAYER_5);
+ break;
+ case 2 :
+ setPinOutput(LAYER_3);
+ writePin(LAYER_3, 0);
+ setPinInputHigh(LAYER_1);
+ setPinInputHigh(LAYER_2);
+ setPinInputHigh(LAYER_4);
+ setPinInputHigh(LAYER_5);
+ break;
+ case 3 :
+ writePin(LAYER_4, 0);
+ setPinInputHigh(LAYER_5);
+ setPinInputHigh(LAYER_1);
+ setPinInputHigh(LAYER_2);
+ setPinInputHigh(LAYER_3);
+ setPinOutput(LAYER_4);
+ break;
+ case 4 :
+ setPinOutput(LAYER_5);
+ writePin(LAYER_5, 0);
+ setPinInputHigh(LAYER_1);
+ setPinInputHigh(LAYER_2);
+ setPinInputHigh(LAYER_3);
+ setPinInputHigh(LAYER_4);
+ break;
+ default :
+ setPinInputHigh(LAYER_1);
+ setPinInputHigh(LAYER_2);
+ setPinInputHigh(LAYER_3);
+ setPinInputHigh(LAYER_4);
+ setPinInputHigh(LAYER_5);
+ }
+}
diff --git a/keyboards/4pplet/eagle_viper_rep/rev_a/rev_a.h b/keyboards/4pplet/eagle_viper_rep/rev_a/rev_a.h
new file mode 100644
index 0000000000..5dac41f921
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/rev_a/rev_a.h
@@ -0,0 +1,41 @@
+/*
+Copyright 2021 Stefan Sundin "4pplet" <4pplet@protonmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see .
+*/
+#pragma once
+
+#include "quantum.h"
+
+void setLayerLed(layer_state_t state);
+
+#define LAYOUT_all( \
+ k00, k10, k01, k11, k02, k12, k03, k13, k04, k14, k05, k15, k06, k16, k36, \
+ k20, k30, k21, k31, k22, k32, k23, k33, k24, k34, k25, k35, k26, k56,\
+ k40, k50, k41, k51, k42, k52, k43, k53, k44, k54, k45, k55, k46, k76,\
+ k60, k70, k61, k71, k62, k72, k63, k73, k64, k74, k65, k75, k66, k96,\
+ k80, k90, k91, k93, k94, k85, k95, k86 \
+) \
+{ \
+ {k00, k01, k02, k03, k04, k05, k06}, \
+ {k10, k11, k12, k13, k14, k15, k16}, \
+ {k20, k21, k22, k23, k24, k25, k26}, \
+ {k30, k31, k32, k33, k34, k35, k36}, \
+ {k40, k41, k42, k43, k44, k45, k46}, \
+ {k50, k51, k52, k53, k54, k55, k56}, \
+ {k60, k61, k62, k63, k64, k65, k66}, \
+ {k70, k71, k72, k73, k74, k75, k76}, \
+ {k80, KC_NO, KC_NO, KC_NO, KC_NO, k85, k86}, \
+ {k90, k91, KC_NO, k93, k94, k95, k96} \
+}
diff --git a/keyboards/4pplet/eagle_viper_rep/rev_a/rules.mk b/keyboards/4pplet/eagle_viper_rep/rev_a/rules.mk
new file mode 100644
index 0000000000..2a1539ed5d
--- /dev/null
+++ b/keyboards/4pplet/eagle_viper_rep/rev_a/rules.mk
@@ -0,0 +1,23 @@
+# MCU name
+MCU = STM32F072
+
+# Build Options
+# comment out to disable the options.
+#
+BOOTMAGIC_ENABLE = lite # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = yes # Mouse keys
+EXTRAKEY_ENABLE = yes # Audio control and System control
+CONSOLE_ENABLE = yes # Console for debug
+COMMAND_ENABLE = yes # Commands for debug and configuration
+SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
+NKRO_ENABLE = yes # USB Nkey Rollover
+BACKLIGHT_ENABLE = yes
+BACKLIGHT_DRIVER = pwm
+RGBLIGHT_ENABLE = yes
+WS2812_DRIVER = spi
+
+# Wildcard to allow APM32 MCU
+DFU_SUFFIX_ARGS = -p FFFF -v FFFF
+
+# Enter lower-power sleep mode when on the ChibiOS idle thread
+OPT_DEFS += -DCORTEX_ENABLE_WFI_IDLE=TRUE