diff --git a/hid.h b/hid.h
new file mode 100644
index 00000000..3a3aa1c8
--- /dev/null
+++ b/hid.h
@@ -0,0 +1,320 @@
+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#pragma once
+
+#include <usb/usb_device.h>
+#include <usb/class/usb_hid.h>
+
+#include <zmk/keys.h>
+#include <zmk/mouse.h>
+#include <dt-bindings/zmk/hid_usage.h>
+#include <dt-bindings/zmk/hid_usage_pages.h>
+
+#define COLLECTION_REPORT 0x03
+
+#define ZMK_HID_KEYBOARD_NKRO_SIZE 6
+
+#define ZMK_HID_CONSUMER_NKRO_SIZE 6
+
+static const uint8_t zmk_hid_report_desc[] = {
+    /* USAGE_PAGE (Generic Desktop) */
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_GD,
+    /* USAGE (Keyboard) */
+    HID_LI_USAGE,
+    HID_USAGE_GD_KEYBOARD,
+    /* COLLECTION (Application) */
+    HID_MI_COLLECTION,
+    COLLECTION_APPLICATION,
+    /* REPORT ID (1) */
+    HID_GI_REPORT_ID,
+    0x01,
+    /* USAGE_PAGE (Keyboard/Keypad) */
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_KEY,
+    /* USAGE_MINIMUM (Keyboard LeftControl) */
+    HID_LI_USAGE_MIN(1),
+    HID_USAGE_KEY_KEYBOARD_LEFTCONTROL,
+    /* USAGE_MAXIMUM (Keyboard Right GUI) */
+    HID_LI_USAGE_MAX(1),
+    HID_USAGE_KEY_KEYBOARD_RIGHT_GUI,
+    /* LOGICAL_MINIMUM (0) */
+    HID_GI_LOGICAL_MIN(1),
+    0x00,
+    /* LOGICAL_MAXIMUM (1) */
+    HID_GI_LOGICAL_MAX(1),
+    0x01,
+
+    /* REPORT_SIZE (1) */
+    HID_GI_REPORT_SIZE,
+    0x01,
+    /* REPORT_COUNT (8) */
+    HID_GI_REPORT_COUNT,
+    0x08,
+    /* INPUT (Data,Var,Abs) */
+    HID_MI_INPUT,
+    0x02,
+
+    /* USAGE_PAGE (Keyboard/Keypad) */
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_KEY,
+    /* REPORT_SIZE (8) */
+    HID_GI_REPORT_SIZE,
+    0x08,
+    /* REPORT_COUNT (1) */
+    HID_GI_REPORT_COUNT,
+    0x01,
+    /* INPUT (Cnst,Var,Abs) */
+    HID_MI_INPUT,
+    0x03,
+
+    /* USAGE_PAGE (Keyboard/Keypad) */
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_KEY,
+    /* LOGICAL_MINIMUM (0) */
+    HID_GI_LOGICAL_MIN(1),
+    0x00,
+    /* LOGICAL_MAXIMUM (0xFF) */
+    HID_GI_LOGICAL_MAX(1),
+    0xFF,
+    /* USAGE_MINIMUM (Reserved) */
+    HID_LI_USAGE_MIN(1),
+    0x00,
+    /* USAGE_MAXIMUM (Keyboard Application) */
+    HID_LI_USAGE_MAX(1),
+    0xFF,
+    /* REPORT_SIZE (1) */
+    HID_GI_REPORT_SIZE,
+    0x08,
+    /* REPORT_COUNT (ZMK_HID_KEYBOARD_NKRO_SIZE) */
+    HID_GI_REPORT_COUNT,
+    ZMK_HID_KEYBOARD_NKRO_SIZE,
+    /* INPUT (Data,Ary,Abs) */
+    HID_MI_INPUT,
+    0x00,
+
+    /* END_COLLECTION */
+    HID_MI_COLLECTION_END,
+    /* USAGE_PAGE (Consumer) */
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_CONSUMER,
+    /* USAGE (Consumer Control) */
+    HID_LI_USAGE,
+    HID_USAGE_CONSUMER_CONSUMER_CONTROL,
+    /* Consumer Page */
+    HID_MI_COLLECTION,
+    COLLECTION_APPLICATION,
+    /* REPORT ID (1) */
+    HID_GI_REPORT_ID,
+    0x02,
+    /* USAGE_PAGE (Consumer) */
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_CONSUMER,
+    /* LOGICAL_MINIMUM (0) */
+    HID_GI_LOGICAL_MIN(1),
+    0x00,
+    /* LOGICAL_MAXIMUM (0xFFFF) */
+    HID_GI_LOGICAL_MAX(2),
+    0xFF,
+    0xFF,
+    HID_LI_USAGE_MIN(1),
+    0x00,
+    /* USAGE_MAXIMUM (0xFFFF) */
+    HID_LI_USAGE_MAX(2),
+    0xFF,
+    0xFF,
+    /* INPUT (Data,Ary,Abs) */
+    /* REPORT_SIZE (16) */
+    HID_GI_REPORT_SIZE,
+    0x10,
+    /* REPORT_COUNT (ZMK_HID_CONSUMER_NKRO_SIZE) */
+    HID_GI_REPORT_COUNT,
+    ZMK_HID_CONSUMER_NKRO_SIZE,
+    HID_MI_INPUT,
+    0x00,
+    /* END COLLECTION */
+    HID_MI_COLLECTION_END,
+
+    /* USAGE_PAGE (Generic Desktop) */
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_GD,
+    /* USAGE (Mouse) */
+    HID_LI_USAGE,
+    HID_USAGE_GD_MOUSE,
+    /* COLLECTION (Application) */
+    HID_MI_COLLECTION,
+    COLLECTION_APPLICATION,
+    /* REPORT ID (4) */
+    HID_GI_REPORT_ID,
+    0x04,
+    /* USAGE (Pointer) */
+    HID_LI_USAGE,
+    HID_USAGE_GD_POINTER,
+    /* COLLECTION (Physical) */
+    HID_MI_COLLECTION,
+    COLLECTION_PHYSICAL,
+    /* USAGE_PAGE (Button) */
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_BUTTON,
+    /* USAGE_MINIMUM (0x1) (button 1?) */
+    HID_LI_USAGE_MIN(1),
+    0x1,
+    /* USAGE_MAXIMUM (0x10) (button 5? Buttons up to 8 still work) */
+    HID_LI_USAGE_MAX(1),
+    0x10,
+    /* LOGICAL_MINIMUM (0) */
+    HID_GI_LOGICAL_MIN(1),
+    0x00,
+    /* LOGICAL_MAXIMUM (1) */
+    HID_GI_LOGICAL_MAX(1),
+    0x01,
+    /* REPORT_SIZE (1) */
+    HID_GI_REPORT_SIZE,
+    0x01,
+    /* REPORT_COUNT (16) */
+    HID_GI_REPORT_COUNT,
+    0x10,
+    /* INPUT (Data,Var,Abs) */
+    HID_MI_INPUT,
+    0x02,
+    /* USAGE_PAGE (Generic Desktop) */
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_GD,
+    /* LOGICAL_MINIMUM (-32767) */
+    HID_GI_LOGICAL_MIN(2),
+    0x01,
+    0x80,
+    /* LOGICAL_MAXIMUM (32767) */
+    HID_GI_LOGICAL_MAX(2),
+    0xFF,
+    0x7F,
+    /* REPORT_SIZE (16) */
+    HID_GI_REPORT_SIZE,
+    0x10,
+    /* REPORT_COUNT (2) */
+    HID_GI_REPORT_COUNT,
+    0x02,
+    /* USAGE (X) */ // Vertical scroll
+    HID_LI_USAGE,
+    HID_USAGE_GD_X,
+    /* USAGE (Y) */
+    HID_LI_USAGE,
+    HID_USAGE_GD_Y,
+    /* Input (Data,Var,Rel) */
+    HID_MI_INPUT,
+    0x06,
+    /* LOGICAL_MINIMUM (-127) */
+    HID_GI_LOGICAL_MIN(1),
+    0x81,
+    /* LOGICAL_MAXIMUM (127) */
+    HID_GI_LOGICAL_MAX(1),
+    0x7F,
+    /* REPORT_SIZE (8) */
+    HID_GI_REPORT_SIZE,
+    0x08,
+    /* REPORT_COUNT (1) */
+    HID_GI_REPORT_COUNT,
+    0x01,
+    /* USAGE (Wheel) */
+    HID_LI_USAGE,
+    HID_USAGE_GD_WHEEL,
+    /* Input (Data,Var,Rel) */
+    HID_MI_INPUT,
+    0x06,
+    /* USAGE_PAGE (Consumer) */ // Horizontal scroll
+    HID_GI_USAGE_PAGE,
+    HID_USAGE_CONSUMER,
+    /* USAGE (AC Pan) */
+    0x0A,
+    0x38,
+    0x02,
+    /* LOGICAL_MINIMUM (-127) */
+    HID_GI_LOGICAL_MIN(1),
+    0x81,
+    /* LOGICAL_MAXIMUM (127) */
+    HID_GI_LOGICAL_MAX(1),
+    0x7F,
+    /* REPORT_COUNT (1) */
+    HID_GI_REPORT_COUNT,
+    0x01,
+    /* Input (Data,Var,Rel) */
+    HID_MI_INPUT,
+    0x06,
+    /* END COLLECTION */
+    HID_MI_COLLECTION_END,
+    /* END COLLECTION */
+    HID_MI_COLLECTION_END,
+};
+
+// struct zmk_hid_boot_report
+// {
+//     uint8_t modifiers;
+//     uint8_t _unused;
+//     uint8_t keys[6];
+// } __packed;
+
+struct zmk_hid_keyboard_report_body {
+    zmk_mod_flags_t modifiers;
+    uint8_t _reserved;
+    uint8_t keys[ZMK_HID_KEYBOARD_NKRO_SIZE];
+} __packed;
+
+struct zmk_hid_keyboard_report {
+    uint8_t report_id;
+    struct zmk_hid_keyboard_report_body body;
+} __packed;
+
+struct zmk_hid_consumer_report_body {
+    uint16_t keys[ZMK_HID_CONSUMER_NKRO_SIZE];
+} __packed;
+
+struct zmk_hid_consumer_report {
+    uint8_t report_id;
+    struct zmk_hid_consumer_report_body body;
+} __packed;
+
+struct zmk_hid_mouse_report_body {
+    zmk_mouse_button_flags_t buttons;
+    int16_t x;
+    int16_t y;
+    int8_t scroll_y;
+    int8_t scroll_x;
+} __packed;
+
+struct zmk_hid_mouse_report {
+    uint8_t report_id;
+    struct zmk_hid_mouse_report_body body;
+} __packed;
+
+zmk_mod_flags_t zmk_hid_get_explicit_mods();
+int zmk_hid_register_mod(zmk_mod_t modifier);
+int zmk_hid_unregister_mod(zmk_mod_t modifier);
+int zmk_hid_register_mods(zmk_mod_flags_t explicit_modifiers);
+int zmk_hid_unregister_mods(zmk_mod_flags_t explicit_modifiers);
+int zmk_hid_implicit_modifiers_press(zmk_mod_flags_t implicit_modifiers);
+int zmk_hid_implicit_modifiers_release();
+int zmk_hid_keyboard_press(zmk_key_t key);
+int zmk_hid_keyboard_release(zmk_key_t key);
+void zmk_hid_keyboard_clear();
+
+int zmk_hid_consumer_press(zmk_key_t key);
+int zmk_hid_consumer_release(zmk_key_t key);
+void zmk_hid_consumer_clear();
+
+int zmk_hid_mouse_button_press(zmk_mouse_button_t button);
+int zmk_hid_mouse_button_release(zmk_mouse_button_t button);
+int zmk_hid_mouse_buttons_press(zmk_mouse_button_flags_t buttons);
+int zmk_hid_mouse_buttons_release(zmk_mouse_button_flags_t buttons);
+void zmk_hid_mouse_movement_set(int16_t x, int16_t y);
+void zmk_hid_mouse_scroll_set(int8_t x, int8_t y);
+void zmk_hid_mouse_movement_update(int16_t x, int16_t y);
+void zmk_hid_mouse_scroll_update(int8_t x, int8_t y);
+void zmk_hid_mouse_clear();
+
+struct zmk_hid_keyboard_report *zmk_hid_get_keyboard_report();
+struct zmk_hid_consumer_report *zmk_hid_get_consumer_report();
+struct zmk_hid_mouse_report *zmk_hid_get_mouse_report();
diff --git a/hog.h b/hog.h
new file mode 100644
index 00000000..9debc3ff
--- /dev/null
+++ b/hog.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#pragma once
+
+#include <zmk/keys.h>
+#include <zmk/hid.h>
+
+int zmk_hog_init();
+
+int zmk_hog_send_keyboard_report(struct zmk_hid_keyboard_report_body *body);
+int zmk_hog_send_consumer_report(struct zmk_hid_consumer_report_body *body);
+int zmk_hog_send_mouse_report(struct zmk_hid_mouse_report_body *body);
diff --git a/mouse.h b/mouse.h
new file mode 100644
index 00000000..f8f85744
--- /dev/null
+++ b/mouse.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2021 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#pragma once
+
+#include <zephyr.h>
+#include <dt-bindings/zmk/mouse.h>
+
+typedef uint16_t zmk_mouse_button_flags_t;
+typedef uint16_t zmk_mouse_button_t;
+
+struct mouse_config {
+    int delay_ms;
+    int time_to_max_speed_ms;
+    // acceleration exponent 0: uniform speed
+    // acceleration exponent 1: uniform acceleration
+    // acceleration exponent 2: uniform jerk
+    int acceleration_exponent;
+};
+
+struct vector2d {
+    float x;
+    float y;
+};
+
+struct k_work_q *zmk_mouse_work_q();
+int zmk_mouse_init();
\ No newline at end of file