[Keyboard] Add SIRIND Klein (#21951)

Co-authored-by: Less/Rikki <86894501+lesshonor@users.noreply.github.com>
Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: jack <0x6a73@protonmail.com>

9 files changed, 732 insertions, 0 deletions

diff --git a/keyboards/era/klein/config.h b/keyboards/era/klein/config.h
new file mode 100644
index 0000000000..e74b7d73d3
--- /dev/null
+++ b/keyboards/era/klein/config.h
@@ -0,0 +1,29 @@
+/* Copyright 2023 eerraa
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+/* BACKLIGHT PWM */
+#define BACKLIGHT_PWM_DRIVER PWMD7
+#define BACKLIGHT_PWM_CHANNEL RP2040_PWM_CHANNEL_B
+
+/* RGB Matrix */
+#define WS2812_PIO_USE_PIO1 // Force the usage of PIO1 peripheral, by default the WS2812 implementation uses the PIO0 peripheral
+#define RGB_MATRIX_DEFAULT_VAL 60
+#define RGB_MATRIX_FRAMEBUFFER_EFFECTS
+#define RGB_MATRIX_KEYPRESSES
+#define RGB_DISABLE_WHEN_USB_SUSPENDED
+#define RGB_MATRIX_DEFAULT_MODE RGB_MATRIX_CYCLE_LEFT_RIGHT
\ No newline at end of file
diff --git a/keyboards/era/klein/halconf.h b/keyboards/era/klein/halconf.h
new file mode 100644
index 0000000000..f57e86df01
--- /dev/null
+++ b/keyboards/era/klein/halconf.h
@@ -0,0 +1,21 @@
+/* Copyright 2023 eerraa
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#define HAL_USE_PWM TRUE
+
+#include_next <halconf.h>
\ No newline at end of file
diff --git a/keyboards/era/klein/info.json b/keyboards/era/klein/info.json
new file mode 100644
index 0000000000..ac08cbb8a2
--- /dev/null
+++ b/keyboards/era/klein/info.json
@@ -0,0 +1,590 @@
+{
+    "manufacturer": "SIRIND",
+    "keyboard_name": "Klein",
+    "maintainer": "eerraa",
+    "backlight": {
+        "levels": 5,
+        "pin": "GP15"
+    },
+    "bootloader": "rp2040",
+    "build": {
+        "debounce_type": "sym_defer_pk"
+    },
+    "diode_direction": "COL2ROW",
+    "features": {
+        "backlight": true,
+        "bootmagic": true,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true,
+        "rgb_matrix": true
+    },
+    "indicators": {
+        "caps_lock": "GP16",
+        "on_state": 0,
+        "scroll_lock": "GP17"
+    },
+    "matrix_pins": {
+        "cols": ["GP22", "GP23", "GP24", "GP25", "GP26", "GP27", "GP28", "GP29", "GP11", "GP10", "GP8", "GP7", "GP1", "GP2", "GP3", "GP4"],
+        "rows": ["GP18", "GP19", "GP20", "GP21", "GP14", "GP5", "GP6", "GP9", "GP13", "GP12"]
+    },
+    "processor": "RP2040",
+    "rgb_matrix": {
+        "animations": {
+            "alphas_mods": true,
+            "gradient_up_down": true,
+            "gradient_left_right": true,
+            "breathing": true,
+            "band_sat": true,
+            "band_val": true,
+            "band_pinwheel_sat": true,
+            "band_pinwheel_val": true,
+            "band_spiral_sat": true,
+            "band_spiral_val": true,
+            "cycle_all": true,
+            "cycle_left_right": true,
+            "cycle_up_down": true,
+            "rainbow_moving_chevron": true,
+            "cycle_out_in": true,
+            "cycle_out_in_dual": true,
+            "cycle_pinwheel": true,
+            "cycle_spiral": true,
+            "dual_beacon": true,
+            "rainbow_beacon": true,
+            "rainbow_pinwheels": true,
+            "raindrops": true,
+            "jellybean_raindrops": true,
+            "hue_breathing": true,
+            "hue_pendulum": true,
+            "hue_wave": true,
+            "pixel_rain": true,
+            "pixel_flow": true,
+            "pixel_fractal": true,
+            "typing_heatmap": true,
+            "digital_rain": true,
+            "solid_reactive_simple": true,
+            "solid_reactive": true,
+            "solid_reactive_wide": true,
+            "solid_reactive_multiwide": true,
+            "solid_reactive_cross": true,
+            "solid_reactive_multicross": true,
+            "solid_reactive_nexus": true,
+            "solid_reactive_multinexus": true,
+            "splash": true,
+            "multisplash": true,
+            "solid_splash": true,
+            "solid_multisplash": true
+        },
+        "driver": "ws2812",
+        "layout": [
+            {"matrix": [0, 7], "x": 4, "y": 0, "flags": 1},
+            {"matrix": [0, 6], "x": 20, "y": 2, "flags": 4},
+            {"matrix": [0, 5], "x": 32, "y": 2, "flags": 4},
+            {"matrix": [0, 4], "x": 45, "y": 1, "flags": 4},
+            {"matrix": [0, 3], "x": 58, "y": 3, "flags": 4},
+            {"matrix": [0, 2], "x": 71, "y": 5, "flags": 4},
+            {"matrix": [0, 1], "x": 83, "y": 8, "flags": 4},
+            {"matrix": [0, 0], "x": 96, "y": 10, "flags": 4},
+            {"matrix": [1, 0], "x": 129, "y": 9, "flags": 4},
+            {"matrix": [1, 1], "x": 141, "y": 7, "flags": 4},
+            {"matrix": [1, 2], "x": 154, "y": 4, "flags": 4},
+            {"matrix": [1, 3], "x": 166, "y": 2, "flags": 4},
+            {"matrix": [1, 4], "x": 179, "y": 1, "flags": 4},
+            {"matrix": [1, 5], "x": 192, "y": 2, "flags": 4},
+            {"matrix": [1, 6], "x": 211, "y": 2, "flags": 1},
+            {"matrix": [1, 7], "x": 1, "y": 13, "flags": 1},
+            {"matrix": [2, 6], "x": 21, "y": 15, "flags": 1},
+            {"matrix": [2, 5], "x": 36, "y": 15, "flags": 4},
+            {"matrix": [2, 4], "x": 50, "y": 15, "flags": 4},
+            {"matrix": [2, 3], "x": 62, "y": 17, "flags": 4},
+            {"matrix": [2, 2], "x": 75, "y": 20, "flags": 4},
+            {"matrix": [2, 1], "x": 87, "y": 22, "flags": 4},
+            {"matrix": [2, 0], "x": 100, "y": 24, "flags": 4},
+            {"matrix": [3, 1], "x": 125, "y": 23, "flags": 4},
+            {"matrix": [3, 2], "x": 137, "y": 21, "flags": 4},
+            {"matrix": [3, 3], "x": 150, "y": 18, "flags": 4},
+            {"matrix": [3, 4], "x": 162, "y": 16, "flags": 4},
+            {"matrix": [3, 5], "x": 175, "y": 15, "flags": 4},
+            {"matrix": [3, 6], "x": 188, "y": 15, "flags": 4},
+            {"matrix": [4, 6], "x": 201, "y": 15, "flags": 4},
+            {"matrix": [4, 5], "x": 217, "y": 15, "flags": 4},
+            {"matrix": [4, 3], "x": 0, "y": 27, "flags": 1},
+            {"matrix": [4, 1], "x": 18, "y": 29, "flags": 1},
+            {"matrix": [0, 8], "x": 38, "y": 29, "flags": 4},
+            {"matrix": [0, 9], "x": 51, "y": 29, "flags": 4},
+            {"matrix": [0, 10], "x": 64, "y": 31, "flags": 4},
+            {"matrix": [0, 11], "x": 76, "y": 33, "flags": 4},
+            {"matrix": [0, 12], "x": 89, "y": 36, "flags": 4},
+            {"matrix": [0, 13], "x": 129, "y": 36, "flags": 4},
+            {"matrix": [0, 15], "x": 142, "y": 33, "flags": 4},
+            {"matrix": [1, 15], "x": 154, "y": 31, "flags": 4},
+            {"matrix": [1, 14], "x": 167, "y": 29, "flags": 4},
+            {"matrix": [1, 13], "x": 180, "y": 29, "flags": 4},
+            {"matrix": [1, 12], "x": 193, "y": 29, "flags": 4},
+            {"matrix": [1, 11], "x": 213, "y": 29, "flags": 1},
+            {"matrix": [1, 10], "x": 21, "y": 42, "flags": 1},
+            {"matrix": [1, 9], "x": 42, "y": 42, "flags": 4},
+            {"matrix": [1, 8], "x": 60, "y": 57, "flags": 4},
+            {"matrix": [2, 8], "x": 67, "y": 45, "flags": 4},
+            {"matrix": [2, 9], "x": 80, "y": 47, "flags": 4},
+            {"matrix": [2, 10], "x": 92, "y": 50, "flags": 4},
+            {"matrix": [2, 11], "x": 126, "y": 50, "flags": 4},
+            {"matrix": [2, 12], "x": 138, "y": 48, "flags": 4},
+            {"matrix": [2, 13], "x": 151, "y": 45, "flags": 4},
+            {"matrix": [2, 15], "x": 163, "y": 43, "flags": 4},
+            {"matrix": [3, 14], "x": 177, "y": 42, "flags": 4},
+            {"matrix": [3, 13], "x": 189, "y": 42, "flags": 4},
+            {"matrix": [3, 12], "x": 213, "y": 42, "flags": 1},
+            {"matrix": [3, 11], "x": 16, "y": 55, "flags": 1},
+            {"matrix": [3, 10], "x": 55, "y": 43, "flags": 1},
+            {"matrix": [3, 9], "x": 76, "y": 60, "flags": 4},
+            {"matrix": [3, 8], "x": 96, "y": 64, "flags": 1},
+            {"matrix": [4, 9], "x": 139, "y": 61, "flags": 4},
+            {"matrix": [4, 11], "x": 166, "y": 57, "flags": 1},
+            {"matrix": [4, 13], "x": 189, "y": 55, "flags": 1},
+            {"matrix": [4, 14], "x": 202, "y": 55, "flags": 1},
+            {"matrix": [4, 15], "x": 221, "y": 55, "flags": 1}
+        ],
+        "led_count": 67
+    },
+    "url": "",
+    "usb": {
+        "device_version": "1.0.0",
+        "pid": "0x0003",
+        "vid": "0x4552"
+    },
+    "ws2812": {
+        "driver": "vendor",
+        "pin": "GP0"
+    },
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                {"matrix": [0, 0], "x": 0, "y": 0},
+                {"matrix": [0, 1], "x": 1.5, "y": 0},
+                {"matrix": [0, 2], "x": 2.5, "y": 0},
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+                {"matrix": [9, 6], "x": 16, "y": 4},
+                {"matrix": [9, 7], "x": 17, "y": 4}
+            ]
+        },
+        "LAYOUT_ansi": {
+            "layout": [
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+                {"matrix": [1, 2], "x": 3, "y": 1},
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+                {"matrix": [1, 5], "x": 6, "y": 1},
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+                {"matrix": [8, 3], "x": 13, "y": 3},
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+                {"matrix": [9, 7], "x": 17.25, "y": 4, "w": 1.5}
+            ]
+        },
+        "LAYOUT_ansi_arrow": {
+            "layout": [
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+                {"matrix": [2, 2], "x": 3.25, "y": 2},
+                {"matrix": [2, 3], "x": 4.25, "y": 2},
+                {"matrix": [2, 4], "x": 5.25, "y": 2},
+                {"matrix": [2, 5], "x": 6.25, "y": 2},
+                {"matrix": [2, 6], "x": 7.25, "y": 2},
+                {"matrix": [7, 0], "x": 10.5, "y": 2},
+                {"matrix": [7, 1], "x": 11.5, "y": 2},
+                {"matrix": [7, 2], "x": 12.5, "y": 2},
+                {"matrix": [7, 3], "x": 13.5, "y": 2},
+                {"matrix": [7, 4], "x": 14.5, "y": 2},
+                {"matrix": [7, 5], "x": 15.5, "y": 2},
+                {"matrix": [7, 7], "x": 16.5, "y": 2, "w": 2.25},
+                {"matrix": [3, 1], "x": 1.5, "y": 3, "w": 2.25},
+                {"matrix": [3, 2], "x": 3.75, "y": 3},
+                {"matrix": [3, 3], "x": 4.75, "y": 3},
+                {"matrix": [3, 4], "x": 5.75, "y": 3},
+                {"matrix": [3, 5], "x": 6.75, "y": 3},
+                {"matrix": [3, 6], "x": 7.75, "y": 3},
+                {"matrix": [8, 0], "x": 10, "y": 3},
+                {"matrix": [8, 1], "x": 11, "y": 3},
+                {"matrix": [8, 2], "x": 12, "y": 3},
+                {"matrix": [8, 3], "x": 13, "y": 3},
+                {"matrix": [8, 4], "x": 14, "y": 3},
+                {"matrix": [8, 5], "x": 15, "y": 3},
+                {"matrix": [8, 6], "x": 16, "y": 3},
+                {"matrix": [8, 7], "x": 17, "y": 3, "w": 1.75},
+                {"matrix": [4, 1], "x": 1.5, "y": 4},
+                {"matrix": [4, 3], "x": 4.5, "y": 4, "w": 1.5},
+                {"matrix": [4, 4], "x": 6, "y": 4, "w": 2.25},
+                {"matrix": [4, 5], "x": 8.25, "y": 4},
+                {"matrix": [9, 1], "x": 10, "y": 4, "w": 2.75},
+                {"matrix": [9, 3], "x": 12.75, "y": 4, "w": 1.5},
+                {"matrix": [9, 5], "x": 15, "y": 4},
+                {"matrix": [9, 6], "x": 16, "y": 4},
+                {"matrix": [9, 7], "x": 17, "y": 4}
+            ]
+        },
+        "LAYOUT_ansi_split_bs": {
+            "layout": [
+                {"matrix": [0, 0], "x": 0, "y": 0},
+                {"matrix": [0, 1], "x": 1.5, "y": 0},
+                {"matrix": [0, 2], "x": 2.5, "y": 0},
+                {"matrix": [0, 3], "x": 3.5, "y": 0},
+                {"matrix": [0, 4], "x": 4.5, "y": 0},
+                {"matrix": [0, 5], "x": 5.5, "y": 0},
+                {"matrix": [0, 6], "x": 6.5, "y": 0},
+                {"matrix": [0, 7], "x": 7.5, "y": 0},
+                {"matrix": [5, 0], "x": 10.75, "y": 0},
+                {"matrix": [5, 1], "x": 11.75, "y": 0},
+                {"matrix": [5, 2], "x": 12.75, "y": 0},
+                {"matrix": [5, 3], "x": 13.75, "y": 0},
+                {"matrix": [5, 4], "x": 14.75, "y": 0},
+                {"matrix": [5, 5], "x": 15.75, "y": 0},
+                {"matrix": [5, 6], "x": 16.75, "y": 0},
+                {"matrix": [5, 7], "x": 17.75, "y": 0},
+                {"matrix": [1, 0], "x": 0, "y": 1},
+                {"matrix": [1, 1], "x": 1.5, "y": 1, "w": 1.5},
+                {"matrix": [1, 2], "x": 3, "y": 1},
+                {"matrix": [1, 3], "x": 4, "y": 1},
+                {"matrix": [1, 4], "x": 5, "y": 1},
+                {"matrix": [1, 5], "x": 6, "y": 1},
+                {"matrix": [1, 6], "x": 7, "y": 1},
+                {"matrix": [1, 7], "x": 8, "y": 1},
+                {"matrix": [6, 0], "x": 10.25, "y": 1},
+                {"matrix": [6, 1], "x": 11.25, "y": 1},
+                {"matrix": [6, 2], "x": 12.25, "y": 1},
+                {"matrix": [6, 3], "x": 13.25, "y": 1},
+                {"matrix": [6, 4], "x": 14.25, "y": 1},
+                {"matrix": [6, 5], "x": 15.25, "y": 1},
+                {"matrix": [6, 6], "x": 16.25, "y": 1},
+                {"matrix": [6, 7], "x": 17.25, "y": 1, "w": 1.5},
+                {"matrix": [2, 0], "x": 0, "y": 2},
+                {"matrix": [2, 1], "x": 1.5, "y": 2, "w": 1.75},
+                {"matrix": [2, 2], "x": 3.25, "y": 2},
+                {"matrix": [2, 3], "x": 4.25, "y": 2},
+                {"matrix": [2, 4], "x": 5.25, "y": 2},
+                {"matrix": [2, 5], "x": 6.25, "y": 2},
+                {"matrix": [2, 6], "x": 7.25, "y": 2},
+                {"matrix": [7, 0], "x": 10.5, "y": 2},
+                {"matrix": [7, 1], "x": 11.5, "y": 2},
+                {"matrix": [7, 2], "x": 12.5, "y": 2},
+                {"matrix": [7, 3], "x": 13.5, "y": 2},
+                {"matrix": [7, 4], "x": 14.5, "y": 2},
+                {"matrix": [7, 5], "x": 15.5, "y": 2},
+                {"matrix": [7, 7], "x": 16.5, "y": 2, "w": 2.25},
+                {"matrix": [3, 1], "x": 1.5, "y": 3, "w": 2.25},
+                {"matrix": [3, 2], "x": 3.75, "y": 3},
+                {"matrix": [3, 3], "x": 4.75, "y": 3},
+                {"matrix": [3, 4], "x": 5.75, "y": 3},
+                {"matrix": [3, 5], "x": 6.75, "y": 3},
+                {"matrix": [3, 6], "x": 7.75, "y": 3},
+                {"matrix": [8, 0], "x": 10, "y": 3},
+                {"matrix": [8, 1], "x": 11, "y": 3},
+                {"matrix": [8, 2], "x": 12, "y": 3},
+                {"matrix": [8, 3], "x": 13, "y": 3},
+                {"matrix": [8, 4], "x": 14, "y": 3},
+                {"matrix": [8, 5], "x": 15, "y": 3},
+                {"matrix": [8, 6], "x": 16, "y": 3, "w": 2.75},
+                {"matrix": [4, 1], "x": 1.5, "y": 4},
+                {"matrix": [4, 3], "x": 4.5, "y": 4, "w": 1.5},
+                {"matrix": [4, 4], "x": 6, "y": 4, "w": 2.25},
+                {"matrix": [4, 5], "x": 8.25, "y": 4},
+                {"matrix": [9, 1], "x": 10, "y": 4, "w": 2.75},
+                {"matrix": [9, 3], "x": 12.75, "y": 4, "w": 1.5},
+                {"matrix": [9, 7], "x": 17.25, "y": 4, "w": 1.5}
+            ]
+        },
+        "LAYOUT_ansi_split_bs_rsft": {
+            "layout": [
+                {"matrix": [0, 0], "x": 0, "y": 0},
+                {"matrix": [0, 1], "x": 1.5, "y": 0},
+                {"matrix": [0, 2], "x": 2.5, "y": 0},
+                {"matrix": [0, 3], "x": 3.5, "y": 0},
+                {"matrix": [0, 4], "x": 4.5, "y": 0},
+                {"matrix": [0, 5], "x": 5.5, "y": 0},
+                {"matrix": [0, 6], "x": 6.5, "y": 0},
+                {"matrix": [0, 7], "x": 7.5, "y": 0},
+                {"matrix": [5, 0], "x": 10.75, "y": 0},
+                {"matrix": [5, 1], "x": 11.75, "y": 0},
+                {"matrix": [5, 2], "x": 12.75, "y": 0},
+                {"matrix": [5, 3], "x": 13.75, "y": 0},
+                {"matrix": [5, 4], "x": 14.75, "y": 0},
+                {"matrix": [5, 5], "x": 15.75, "y": 0},
+                {"matrix": [5, 6], "x": 16.75, "y": 0},
+                {"matrix": [5, 7], "x": 17.75, "y": 0},
+                {"matrix": [1, 0], "x": 0, "y": 1},
+                {"matrix": [1, 1], "x": 1.5, "y": 1, "w": 1.5},
+                {"matrix": [1, 2], "x": 3, "y": 1},
+                {"matrix": [1, 3], "x": 4, "y": 1},
+                {"matrix": [1, 4], "x": 5, "y": 1},
+                {"matrix": [1, 5], "x": 6, "y": 1},
+                {"matrix": [1, 6], "x": 7, "y": 1},
+                {"matrix": [1, 7], "x": 8, "y": 1},
+                {"matrix": [6, 0], "x": 10.25, "y": 1},
+                {"matrix": [6, 1], "x": 11.25, "y": 1},
+                {"matrix": [6, 2], "x": 12.25, "y": 1},
+                {"matrix": [6, 3], "x": 13.25, "y": 1},
+                {"matrix": [6, 4], "x": 14.25, "y": 1},
+                {"matrix": [6, 5], "x": 15.25, "y": 1},
+                {"matrix": [6, 6], "x": 16.25, "y": 1},
+                {"matrix": [6, 7], "x": 17.25, "y": 1, "w": 1.5},
+                {"matrix": [2, 0], "x": 0, "y": 2},
+                {"matrix": [2, 1], "x": 1.5, "y": 2, "w": 1.75},
+                {"matrix": [2, 2], "x": 3.25, "y": 2},
+                {"matrix": [2, 3], "x": 4.25, "y": 2},
+                {"matrix": [2, 4], "x": 5.25, "y": 2},
+                {"matrix": [2, 5], "x": 6.25, "y": 2},
+                {"matrix": [2, 6], "x": 7.25, "y": 2},
+                {"matrix": [7, 0], "x": 10.5, "y": 2},
+                {"matrix": [7, 1], "x": 11.5, "y": 2},
+                {"matrix": [7, 2], "x": 12.5, "y": 2},
+                {"matrix": [7, 3], "x": 13.5, "y": 2},
+                {"matrix": [7, 4], "x": 14.5, "y": 2},
+                {"matrix": [7, 5], "x": 15.5, "y": 2},
+                {"matrix": [7, 7], "x": 16.5, "y": 2, "w": 2.25},
+                {"matrix": [3, 1], "x": 1.5, "y": 3, "w": 2.25},
+                {"matrix": [3, 2], "x": 3.75, "y": 3},
+                {"matrix": [3, 3], "x": 4.75, "y": 3},
+                {"matrix": [3, 4], "x": 5.75, "y": 3},
+                {"matrix": [3, 5], "x": 6.75, "y": 3},
+                {"matrix": [3, 6], "x": 7.75, "y": 3},
+                {"matrix": [8, 0], "x": 10, "y": 3},
+                {"matrix": [8, 1], "x": 11, "y": 3},
+                {"matrix": [8, 2], "x": 12, "y": 3},
+                {"matrix": [8, 3], "x": 13, "y": 3},
+                {"matrix": [8, 4], "x": 14, "y": 3},
+                {"matrix": [8, 5], "x": 15, "y": 3},
+                {"matrix": [8, 6], "x": 16, "y": 3, "w": 1.75},
+                {"matrix": [8, 7], "x": 17.75, "y": 3},
+                {"matrix": [4, 1], "x": 1.5, "y": 4},
+                {"matrix": [4, 3], "x": 4.5, "y": 4, "w": 1.5},
+                {"matrix": [4, 4], "x": 6, "y": 4, "w": 2.25},
+                {"matrix": [4, 5], "x": 8.25, "y": 4},
+                {"matrix": [9, 1], "x": 10, "y": 4, "w": 2.75},
+                {"matrix": [9, 3], "x": 12.75, "y": 4, "w": 1.5},
+                {"matrix": [9, 7], "x": 17.25, "y": 4, "w": 1.5}
+            ]
+        },
+        "LAYOUT_arrow_split_bs": {
+            "layout": [
+                {"matrix": [0, 0], "x": 0, "y": 0},
+                {"matrix": [0, 1], "x": 1.5, "y": 0},
+                {"matrix": [0, 2], "x": 2.5, "y": 0},
+                {"matrix": [0, 3], "x": 3.5, "y": 0},
+                {"matrix": [0, 4], "x": 4.5, "y": 0},
+                {"matrix": [0, 5], "x": 5.5, "y": 0},
+                {"matrix": [0, 6], "x": 6.5, "y": 0},
+                {"matrix": [0, 7], "x": 7.5, "y": 0},
+                {"matrix": [5, 0], "x": 10.75, "y": 0},
+                {"matrix": [5, 1], "x": 11.75, "y": 0},
+                {"matrix": [5, 2], "x": 12.75, "y": 0},
+                {"matrix": [5, 3], "x": 13.75, "y": 0},
+                {"matrix": [5, 4], "x": 14.75, "y": 0},
+                {"matrix": [5, 5], "x": 15.75, "y": 0},
+                {"matrix": [5, 6], "x": 16.75, "y": 0},
+                {"matrix": [5, 7], "x": 17.75, "y": 0},
+                {"matrix": [1, 0], "x": 0, "y": 1},
+                {"matrix": [1, 1], "x": 1.5, "y": 1, "w": 1.5},
+                {"matrix": [1, 2], "x": 3, "y": 1},
+                {"matrix": [1, 3], "x": 4, "y": 1},
+                {"matrix": [1, 4], "x": 5, "y": 1},
+                {"matrix": [1, 5], "x": 6, "y": 1},
+                {"matrix": [1, 6], "x": 7, "y": 1},
+                {"matrix": [1, 7], "x": 8, "y": 1},
+                {"matrix": [6, 0], "x": 10.25, "y": 1},
+                {"matrix": [6, 1], "x": 11.25, "y": 1},
+                {"matrix": [6, 2], "x": 12.25, "y": 1},
+                {"matrix": [6, 3], "x": 13.25, "y": 1},
+                {"matrix": [6, 4], "x": 14.25, "y": 1},
+                {"matrix": [6, 5], "x": 15.25, "y": 1},
+                {"matrix": [6, 6], "x": 16.25, "y": 1},
+                {"matrix": [6, 7], "x": 17.25, "y": 1, "w": 1.5},
+                {"matrix": [2, 0], "x": 0, "y": 2},
+                {"matrix": [2, 1], "x": 1.5, "y": 2, "w": 1.75},
+                {"matrix": [2, 2], "x": 3.25, "y": 2},
+                {"matrix": [2, 3], "x": 4.25, "y": 2},
+                {"matrix": [2, 4], "x": 5.25, "y": 2},
+                {"matrix": [2, 5], "x": 6.25, "y": 2},
+                {"matrix": [2, 6], "x": 7.25, "y": 2},
+                {"matrix": [7, 0], "x": 10.5, "y": 2},
+                {"matrix": [7, 1], "x": 11.5, "y": 2},
+                {"matrix": [7, 2], "x": 12.5, "y": 2},
+                {"matrix": [7, 3], "x": 13.5, "y": 2},
+                {"matrix": [7, 4], "x": 14.5, "y": 2},
+                {"matrix": [7, 5], "x": 15.5, "y": 2},
+                {"matrix": [7, 7], "x": 16.5, "y": 2, "w": 2.25},
+                {"matrix": [3, 1], "x": 1.5, "y": 3, "w": 2.25},
+                {"matrix": [3, 2], "x": 3.75, "y": 3},
+                {"matrix": [3, 3], "x": 4.75, "y": 3},
+                {"matrix": [3, 4], "x": 5.75, "y": 3},
+                {"matrix": [3, 5], "x": 6.75, "y": 3},
+                {"matrix": [3, 6], "x": 7.75, "y": 3},
+                {"matrix": [8, 0], "x": 10, "y": 3},
+                {"matrix": [8, 1], "x": 11, "y": 3},
+                {"matrix": [8, 2], "x": 12, "y": 3},
+                {"matrix": [8, 3], "x": 13, "y": 3},
+                {"matrix": [8, 4], "x": 14, "y": 3},
+                {"matrix": [8, 5], "x": 15, "y": 3},
+                {"matrix": [8, 6], "x": 16, "y": 3},
+                {"matrix": [8, 7], "x": 17, "y": 3, "w": 1.75},
+                {"matrix": [4, 1], "x": 1.5, "y": 4},
+                {"matrix": [4, 3], "x": 4.5, "y": 4, "w": 1.5},
+                {"matrix": [4, 4], "x": 6, "y": 4, "w": 2.25},
+                {"matrix": [4, 5], "x": 8.25, "y": 4},
+                {"matrix": [9, 1], "x": 10, "y": 4, "w": 2.75},
+                {"matrix": [9, 3], "x": 12.75, "y": 4, "w": 1.5},
+                {"matrix": [9, 5], "x": 15, "y": 4},
+                {"matrix": [9, 6], "x": 16, "y": 4},
+                {"matrix": [9, 7], "x": 17, "y": 4}
+            ]
+        }
+    }
+}
\ No newline at end of file
diff --git a/keyboards/era/klein/keymaps/default/keymap.c b/keyboards/era/klein/keymaps/default/keymap.c
new file mode 100644
index 0000000000..88878bbcd9
--- /dev/null
+++ b/keyboards/era/klein/keymaps/default/keymap.c
@@ -0,0 +1,23 @@
+// Copyright 2018-2022 QMK (@qmk)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    [0] = LAYOUT(
+        KC_ESC,   KC_GRV,   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_BSPC,  KC_BSPC,
+        KC_PGUP,  KC_TAB,   KC_Q,     KC_W,     KC_E,     KC_R,     KC_T,     KC_Y,     KC_Y,     KC_U,     KC_I,     KC_O,     KC_P,     KC_LBRC,  KC_RBRC,  KC_BSLS,
+        KC_PGDN,  KC_CAPS,  KC_A,     KC_S,     KC_D,     KC_F,     KC_G,               KC_H,     KC_J,     KC_K,     KC_L,     KC_SCLN,  KC_QUOT,            KC_ENT,
+                  KC_LSFT,  KC_Z,     KC_X,     KC_C,     KC_V,     KC_B,               KC_B,     KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,  KC_RSFT,  MO(1),
+                  KC_LCTL,            KC_LALT,            KC_SPC,   MO(1),                        KC_SPC,             KC_RALT,            KC_LEFT,  KC_DOWN,  KC_RCTL
+    ),
+
+    [1] = LAYOUT(
+        KC_TRNS,  KC_TRNS,  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_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_PSCR,  KC_SCRL,  KC_PAUS,  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_LSFT,  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
+    )
+};
\ No newline at end of file
diff --git a/keyboards/era/klein/keymaps/via/keymap.c b/keyboards/era/klein/keymaps/via/keymap.c
new file mode 100644
index 0000000000..88878bbcd9
--- /dev/null
+++ b/keyboards/era/klein/keymaps/via/keymap.c
@@ -0,0 +1,23 @@
+// Copyright 2018-2022 QMK (@qmk)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+    [0] = LAYOUT(
+        KC_ESC,   KC_GRV,   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_BSPC,  KC_BSPC,
+        KC_PGUP,  KC_TAB,   KC_Q,     KC_W,     KC_E,     KC_R,     KC_T,     KC_Y,     KC_Y,     KC_U,     KC_I,     KC_O,     KC_P,     KC_LBRC,  KC_RBRC,  KC_BSLS,
+        KC_PGDN,  KC_CAPS,  KC_A,     KC_S,     KC_D,     KC_F,     KC_G,               KC_H,     KC_J,     KC_K,     KC_L,     KC_SCLN,  KC_QUOT,            KC_ENT,
+                  KC_LSFT,  KC_Z,     KC_X,     KC_C,     KC_V,     KC_B,               KC_B,     KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,  KC_RSFT,  MO(1),
+                  KC_LCTL,            KC_LALT,            KC_SPC,   MO(1),                        KC_SPC,             KC_RALT,            KC_LEFT,  KC_DOWN,  KC_RCTL
+    ),
+
+    [1] = LAYOUT(
+        KC_TRNS,  KC_TRNS,  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_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_TRNS,  KC_PSCR,  KC_SCRL,  KC_PAUS,  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_LSFT,  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
+    )
+};
\ No newline at end of file
diff --git a/keyboards/era/klein/keymaps/via/rules.mk b/keyboards/era/klein/keymaps/via/rules.mk
new file mode 100644
index 0000000000..036bd6d1c3
--- /dev/null
+++ b/keyboards/era/klein/keymaps/via/rules.mk
@@ -0,0 +1 @@
+VIA_ENABLE = yes
\ No newline at end of file
diff --git a/keyboards/era/klein/mcuconf.h b/keyboards/era/klein/mcuconf.h
new file mode 100644
index 0000000000..b82cc49d7d
--- /dev/null
+++ b/keyboards/era/klein/mcuconf.h
@@ -0,0 +1,22 @@
+/* Copyright 2023 eerraa
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include_next <mcuconf.h>
+
+#undef RP_PWM_USE_PWM7
+#define RP_PWM_USE_PWM7 TRUE
\ No newline at end of file
diff --git a/keyboards/era/klein/readme.md b/keyboards/era/klein/readme.md
new file mode 100644
index 0000000000..1efeafe451
--- /dev/null
+++ b/keyboards/era/klein/readme.md
@@ -0,0 +1,23 @@
+# MontK Cervin Klein
+
+* Keyboard Maintainer: [ERA](https://github.com/eerraa)
+* Hardware supported: SIRIND Klein
+* Hardware availability: [Syryan](https://srind.mysoho.com/)
+
+Make example for this keyboard (after setting up your build environment):
+
+    make era/klein:default
+
+Flashing example for this keyboard:
+
+    make era/klein:default:flash
+
+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).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the key at ESC(0,0) in the matrix (usually the top left key or Escape) and plug in the keyboard
+* **Physical reset button**: Briefly short the `RESET` and `GND` pads on the SWD header twice, or short the `BOOT` header and plug in keyboard
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available
\ No newline at end of file
diff --git a/keyboards/era/klein/rules.mk b/keyboards/era/klein/rules.mk
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/keyboards/era/klein/rules.mk