Add handwired/positron/12pad keyboard

keyboards/handwired/positron/12pad/config.h

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+// Copyright 2026 juarendra
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+#define MIDI_ADVANCED

keyboards/handwired/positron/12pad/keyboard.json

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+{
+    "manufacturer": "Positron Electronic",
+    "keyboard_name": "12pad",
+    "maintainer": "juarendra",
+    "development_board": "blackpill_f401",
+    "diode_direction": "COL2ROW",
+    "dynamic_keymap": {
+        "layer_count": 6
+    },
+    "eeprom": {
+        "wear_leveling": {
+            "backing_size": 8192
+        }
+    },
+    "encoder": {
+        "rotary": [
+            {"pin_a": "B5", "pin_b": "B6"}
+        ]
+    },
+    "features": {
+        "bootmagic": true,
+        "encoder": true,
+        "extrakey": true,
+        "midi": true,
+        "mousekey": true,
+        "nkro": true,
+        "rgb_matrix": true
+    },
+    "matrix_pins": {
+        "cols": ["B14", "B13", "B12", "B0", "A7"],
+        "rows": ["B3", "B4", "B9"]
+    },
+    "rgb_matrix": {
+        "animations": {
+            "alphas_mods": true,
+            "band_pinwheel_sat": true,
+            "band_pinwheel_val": true,
+            "band_sat": true,
+            "band_spiral_sat": true,
+            "band_spiral_val": true,
+            "band_val": true,
+            "breathing": true,
+            "cycle_all": true,
+            "cycle_left_right": true,
+            "cycle_out_in": true,
+            "cycle_out_in_dual": true,
+            "cycle_pinwheel": true,
+            "cycle_spiral": true,
+            "cycle_up_down": true,
+            "digital_rain": true,
+            "dual_beacon": true,
+            "gradient_left_right": true,
+            "gradient_up_down": true,
+            "hue_breathing": true,
+            "hue_pendulum": true,
+            "hue_wave": true,
+            "jellybean_raindrops": true,
+            "multisplash": true,
+            "pixel_fractal": true,
+            "pixel_rain": true,
+            "rainbow_beacon": true,
+            "rainbow_moving_chevron": true,
+            "rainbow_pinwheels": true,
+            "raindrops": true,
+            "solid_multisplash": true,
+            "solid_reactive": true,
+            "solid_reactive_cross": true,
+            "solid_reactive_multicross": true,
+            "solid_reactive_multinexus": true,
+            "solid_reactive_multiwide": true,
+            "solid_reactive_nexus": true,
+            "solid_reactive_simple": true,
+            "solid_reactive_wide": true,
+            "solid_splash": true,
+            "splash": true,
+            "typing_heatmap": true
+        },
+        "default": {
+            "animation": "cycle_up_down"
+        },
+        "driver": "ws2812",
+        "layout": [
+            {"matrix": [0, 0], "x": 0, "y": 0, "flags": 4},
+            {"matrix": [0, 1], "x": 75, "y": 0, "flags": 4},
+            {"matrix": [0, 2], "x": 150, "y": 0, "flags": 4},
+            {"matrix": [0, 3], "x": 224, "y": 0, "flags": 4},
+            {"matrix": [1, 0], "x": 0, "y": 32, "flags": 4},
+            {"matrix": [1, 1], "x": 75, "y": 32, "flags": 4},
+            {"matrix": [1, 2], "x": 150, "y": 32, "flags": 4},
+            {"matrix": [1, 3], "x": 224, "y": 32, "flags": 4},
+            {"matrix": [2, 0], "x": 0, "y": 64, "flags": 4},
+            {"matrix": [2, 1], "x": 75, "y": 64, "flags": 4},
+            {"matrix": [2, 2], "x": 150, "y": 64, "flags": 4},
+            {"matrix": [2, 3], "x": 224, "y": 64, "flags": 4}
+        ],
+        "max_brightness": 200,
+        "sleep": true
+    },
+    "url": "https://github.com/juarendra/12pad-QMK-VIA",
+    "usb": {
+        "device_version": "1.0.0",
+        "pid": "0x2012",
+        "shared_endpoint": {
+            "keyboard": true
+        },
+        "vid": "0x1209"
+    },
+    "ws2812": {
+        "pin": "A10"
+    },
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                {"matrix": [0, 4], "x": 0, "y": 0},
+                {"matrix": [0, 0], "x": 3.25, "y": 0},
+                {"matrix": [0, 1], "x": 4.25, "y": 0},
+                {"matrix": [0, 2], "x": 5.25, "y": 0},
+                {"matrix": [0, 3], "x": 6.25, "y": 0},
+                {"matrix": [1, 0], "x": 7.75, "y": 0},
+                {"matrix": [1, 1], "x": 8.75, "y": 0},
+                {"matrix": [1, 2], "x": 9.75, "y": 0},
+                {"matrix": [1, 3], "x": 10.75, "y": 0},
+                {"matrix": [2, 0], "x": 12.25, "y": 0},
+                {"matrix": [2, 1], "x": 13.25, "y": 0},
+                {"matrix": [2, 2], "x": 14.25, "y": 0},
+                {"matrix": [2, 3], "x": 15.25, "y": 0}
+            ]
+        }
+    }
+}

keyboards/handwired/positron/12pad/keymaps/default/keymap.c

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+// Copyright 2026 juarendra
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+enum layer_names { _LAY0, _LAY1, _LAY2, _LAY3, _LAY4, _LAY5 };
+
+// clang-format off
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [_LAY0] = LAYOUT(
+        TO(1), KC_F1,   KC_F2,   KC_F3,   KC_F4,      KC_F5,   KC_F6,   KC_F7,   KC_F8,      KC_F9,   KC_F10,  KC_F11,  KC_F12),
+    [_LAY1] = LAYOUT(
+        TO(2), KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+    [_LAY2] = LAYOUT(
+        TO(3), KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+    [_LAY3] = LAYOUT(
+        TO(4), KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+    [_LAY4] = LAYOUT(
+        TO(5), KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS),
+    [_LAY5] = LAYOUT(
+        TO(0), RM_TOGG, RM_NEXT, RM_SPDU, RM_SPDD,    RM_SATU, RM_SATD, RM_HUEU, RM_HUED,    RM_VALU, RM_VALD, KC_TRNS, KC_TRNS)
+};
+// clang-format on
+
+#ifdef ENCODER_MAP_ENABLE
+// clang-format off
+const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][NUM_DIRECTIONS] = {
+    [_LAY0] = { ENCODER_CCW_CW(KC_PGUP, KC_PGDN) },
+    [_LAY1] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) },
+    [_LAY2] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) },
+    [_LAY3] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) },
+    [_LAY4] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) },
+    [_LAY5] = { ENCODER_CCW_CW(KC_TRNS, KC_TRNS) },
+};
+// clang-format on
+#endif

keyboards/handwired/positron/12pad/keymaps/default/rules.mk

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+ENCODER_MAP_ENABLE = yes

keyboards/handwired/positron/12pad/readme.md

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+# 12pad
+
+12-key hotswap macropad with a rotary encoder, by Positron Electronic.
+
+* Keyboard Maintainer: [juarendra](https://github.com/juarendra)
+* Hardware Supported: WeAct Blackpill STM32F401 (USB Type-C)
+* Hardware Availability: [Positron Electronic](https://github.com/juarendra/12pad-QMK-VIA)
+
+Make example for this keyboard (after setting up your build environment):
+
+    qmk compile -kb handwired/positron/12pad -km default
+
+Flashing:
+
+    qmk flash -kb handwired/positron/12pad -km 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).
+
+## Bootloader
+
+Enter the bootloader in 3 ways:
+
+* **Bootmagic reset**: Hold down the encoder knob (top-left key) and plug in the keyboard
+* **Physical reset**: Hold the `BOOT0` button on the Blackpill, tap `NRST` (or plug in USB), then release `BOOT0`
+* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available