Add szr35 keyboard (#25662)

This commit is contained in:
diegorodriguezv
2026-05-22 23:53:07 -05:00
committed by GitHub
parent ffe57097eb
commit a187ebeec6
8 changed files with 425 additions and 0 deletions
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// Copyright 2025 QMK
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include_next <board.h>
#undef STM32_HSECLK
#define STM32_HSECLK 16000000U
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// Copyright 2025 QMK
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#define WS2812_PWM_DRIVER PWMD3
#define WS2812_DMA_STREAM STM32_DMA1_STREAM2
#define WS2812_DMA_CHANNEL 5
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// Copyright 2025 QMK
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#define HAL_USE_PWM TRUE
#define SERIAL_USB_BUFFERS_SIZE 256
#define HAL_USE_SERIAL TRUE
#include_next <halconf.h>
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{
"keyboard_name": "SZR35",
"manufacturer": "SZRKB",
"maintainer": "diegorodriguezv",
"url": "https://github.com/diegorodriguezv/szr35",
"bootloader": "stm32-dfu",
"processor": "STM32F401",
"usb": {
"pid": "0x45D4",
"vid": "0x44DF",
"device_version": "0.0.1"
},
"features": {
"bootmagic": true,
"extrakey": true,
"mousekey": true,
"nkro": true,
"rgb_matrix": true
},
"dynamic_keymap": {
"layer_count": 9
},
"eeprom": {
"wear_leveling": {
"backing_size": 4096
}
},
"matrix_pins": {
"direct": [
["B4", "B0", "B1", "B12", "B13"],
["B5", "C5", "B2", "B14", "B15"],
["B3", "C4", "B10", "C9", "C11"],
["NO_PIN", "NO_PIN", "A1", "C14", "C12"]
]
},
"split": {
"enabled": true,
"serial": {
"driver": "usart",
"pin": "A9"
},
"handedness": {
"pin": "C7"
},
"matrix_pins": {
"right": {
"direct": [
["B2", "B10", "C10", "C11", "B6"],
["B0", "B1", "C12", "D2", "B7"],
["C5", "B12", "B3", "B4", "B5"],
["C4", "A1", "C13", "NO_PIN", "NO_PIN"]
]
}
},
"transport": {
"sync": {
"activity": true,
"layer_state": true,
"matrix_state": true
},
"watchdog": true,
"watchdog_timeout": 3000
},
"bootmagic": {
"matrix": [4, 4]
}
},
"community_layouts": ["split_3x5_3"],
"layouts": {
"LAYOUT_split_3x5_3": {
"layout": [
{ "matrix": [0, 0], "x": 0, "y": 0.3 },
{ "matrix": [0, 1], "x": 1, "y": 0.1 },
{ "matrix": [0, 2], "x": 2, "y": 0 },
{ "matrix": [0, 3], "x": 3, "y": 0.1 },
{ "matrix": [0, 4], "x": 4, "y": 0.2 },
{ "matrix": [4, 0], "x": 8, "y": 0.2 },
{ "matrix": [4, 1], "x": 9, "y": 0.1 },
{ "matrix": [4, 2], "x": 10, "y": 0 },
{ "matrix": [4, 3], "x": 11, "y": 0.1 },
{ "matrix": [4, 4], "x": 12, "y": 0.3 },
{ "matrix": [1, 0], "x": 0, "y": 1.3 },
{ "matrix": [1, 1], "x": 1, "y": 1.1 },
{ "matrix": [1, 2], "x": 2, "y": 1 },
{ "matrix": [1, 3], "x": 3, "y": 1.1 },
{ "matrix": [1, 4], "x": 4, "y": 1.2 },
{ "matrix": [5, 0], "x": 8, "y": 1.2 },
{ "matrix": [5, 1], "x": 9, "y": 1.1 },
{ "matrix": [5, 2], "x": 10, "y": 1 },
{ "matrix": [5, 3], "x": 11, "y": 1.1 },
{ "matrix": [5, 4], "x": 12, "y": 1.3 },
{ "matrix": [2, 0], "x": 0, "y": 2.3 },
{ "matrix": [2, 1], "x": 1, "y": 2.1 },
{ "matrix": [2, 2], "x": 2, "y": 2 },
{ "matrix": [2, 3], "x": 3, "y": 2.1 },
{ "matrix": [2, 4], "x": 4, "y": 2.2 },
{ "matrix": [6, 0], "x": 8, "y": 2.2 },
{ "matrix": [6, 1], "x": 9, "y": 2.1 },
{ "matrix": [6, 2], "x": 10, "y": 2 },
{ "matrix": [6, 3], "x": 11, "y": 2.1 },
{ "matrix": [6, 4], "x": 12, "y": 2.3 },
{ "matrix": [3, 2], "x": 3, "y": 3.7 },
{ "matrix": [3, 3], "x": 4, "y": 3.7 },
{ "matrix": [3, 4], "x": 5, "y": 3.2, "h": 1.5 },
{ "matrix": [7, 0], "x": 7, "y": 3.2, "h": 1.5 },
{ "matrix": [7, 1], "x": 8, "y": 3.7 },
{ "matrix": [7, 2], "x": 9, "y": 3.7 }
]
}
},
"ws2812": {
"driver": "pwm",
"pin": "A7"
},
"rgb_matrix": {
"driver": "ws2812",
"split_count": [18, 18],
"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,
"flower_blooming": 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_cross": true,
"solid_reactive_nexus": true,
"splash": true,
"solid_splash": true,
"starlight_smooth": true,
"starlight": true,
"starlight_dual_sat": true,
"starlight_dual_hue": true,
"riverflow": true
},
"default": {
"animation": "solid_reactive_cross",
"sat": 0
},
"layout": [
{"matrix": [0, 4], "x": 96, "y": 15, "flags": 4},
{"matrix": [0, 3], "x": 72, "y": 15, "flags": 4},
{"matrix": [0, 2], "x": 48, "y": 15, "flags": 4},
{"matrix": [0, 1], "x": 24, "y": 15, "flags": 4},
{"matrix": [0, 0], "x": 0, "y": 15, "flags": 4},
{"matrix": [1, 4], "x": 96, "y": 30, "flags": 4},
{"matrix": [1, 3], "x": 72, "y": 30, "flags": 4},
{"matrix": [1, 2], "x": 48, "y": 30, "flags": 4},
{"matrix": [1, 1], "x": 24, "y": 30, "flags": 4},
{"matrix": [1, 0], "x": 0, "y": 30, "flags": 4},
{"matrix": [2, 4], "x": 96, "y": 45, "flags": 4},
{"matrix": [2, 3], "x": 72, "y": 45, "flags": 4},
{"matrix": [2, 2], "x": 48, "y": 45, "flags": 4},
{"matrix": [2, 1], "x": 24, "y": 45, "flags": 4},
{"matrix": [2, 0], "x": 0, "y": 45, "flags": 4},
{"matrix": [3, 4], "x": 96, "y": 63, "flags": 4},
{"matrix": [3, 3], "x": 72, "y": 63, "flags": 4},
{"matrix": [3, 2], "x": 48, "y": 63, "flags": 4},
{"matrix": [4, 4], "x": 223, "y": 15, "flags": 4},
{"matrix": [4, 3], "x": 192, "y": 15, "flags": 4},
{"matrix": [4, 2], "x": 168, "y": 15, "flags": 4},
{"matrix": [4, 1], "x": 144, "y": 15, "flags": 4},
{"matrix": [4, 0], "x": 120, "y": 15, "flags": 4},
{"matrix": [5, 4], "x": 223, "y": 30, "flags": 4},
{"matrix": [5, 3], "x": 192, "y": 30, "flags": 4},
{"matrix": [5, 2], "x": 168, "y": 30, "flags": 4},
{"matrix": [5, 1], "x": 144, "y": 30, "flags": 4},
{"matrix": [5, 0], "x": 120, "y": 30, "flags": 4},
{"matrix": [6, 4], "x": 223, "y": 45, "flags": 4},
{"matrix": [6, 3], "x": 192, "y": 45, "flags": 4},
{"matrix": [6, 2], "x": 168, "y": 45, "flags": 4},
{"matrix": [6, 1], "x": 144, "y": 45, "flags": 4},
{"matrix": [6, 0], "x": 120, "y": 45, "flags": 4},
{"matrix": [7, 2], "x": 168, "y": 63, "flags": 4},
{"matrix": [7, 1], "x": 144, "y": 63, "flags": 4},
{"matrix": [7, 0], "x": 120, "y": 63, "flags": 4}
]
}
}
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// Copyright 2025 QMK
// SPDX-License-Identifier: GPL-2.0-or-later
// Based loosely on https://peterxjang.com/blog/designing-a-36-key-custom-keyboard-layout.html
// This is a good starting point for someone who is used to normal qwerty keyboards and wants to
// switch easily between the 36-key keyboard and a laptop keyboard. The goal is to minimize the
// learning curve by avoiding key relocation and maintaining our hard-earned muscle memory.
#include QMK_KEYBOARD_H
enum layers {
_LAYER_0,
_LAYER_1,
_LAYER_2,
_LAYER_3,
};
#define LAYER0 MO(_LAYER_0)
#define LAYER1 MO(_LAYER_1)
#define LAYER2 MO(_LAYER_2)
#define LAYER3 MO(_LAYER_3)
#define Z_SFT LSFT_T(KC_Z)
#define SLS_SFT RSFT_T(KC_SLSH)
#define BSL_SFT RSFT_T(KC_BSLS)
#define DEL_ALT LALT_T(KC_DEL)
#define TAB_GUI LGUI_T(KC_TAB)
#define ESC_CTL LCTL_T(KC_ESC)
#define G_TAB G(KC_TAB)
#define C_ESC C(KC_ESC)
#define ENT_LY1 LT(_LAYER_1, KC_ENT)
#define BSP_LY2 LT(_LAYER_2, KC_BSPC)
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
[_LAYER_0] = LAYOUT_split_3x5_3(
KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P,
KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN,
Z_SFT, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, SLS_SFT,
DEL_ALT, TAB_GUI, ESC_CTL, KC_SPC, ENT_LY1, BSP_LY2
),
[_LAYER_1] = LAYOUT_split_3x5_3(
KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0,
KC_GRV, KC_HOME, KC_PGDN, KC_PGUP, KC_END, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT, KC_QUOT,
KC_LSFT, KC_BRID, KC_BRIU, XXXXXXX, XXXXXXX, KC_MINS, KC_EQL, KC_LBRC, KC_RBRC, BSL_SFT,
XXXXXXX, G_TAB, C_ESC, XXXXXXX, _______, LAYER3
),
[_LAYER_2] = LAYOUT_split_3x5_3(
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_MPRV, KC_MPLY, KC_MNXT, MS_LEFT, MS_DOWN, MS_UP, MS_RGHT, KC_PSCR,
KC_MUTE, KC_VOLD, KC_VOLU, MS_WHLD, MS_WHLU, MS_BTN1, MS_BTN2, MS_BTN3, MS_BTN4, MS_BTN5,
MS_ACL0, MS_ACL1, MS_ACL2, XXXXXXX, LAYER3, _______
),
[_LAYER_3] = LAYOUT_split_3x5_3(
QK_BOOT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
RM_TOGG, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
RM_NEXT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, _______, _______
)
};
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// Copyright 2025 QMK
// SPDX-License-Identifier: GPL-2.0-or-later
#include QMK_KEYBOARD_H
enum layers {
_LAYER_0,
_LAYER_1,
_LAYER_2,
_LAYER_3,
};
#define LAYER0 MO(_LAYER_0)
#define LAYER1 MO(_LAYER_1)
#define LAYER2 MO(_LAYER_2)
#define LAYER3 MO(_LAYER_3)
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
[_LAYER_0] = LAYOUT_split_3x5_3(
KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P,
KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN,
KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH,
KC_LGUI, LAYER1, KC_SPC, KC_ENT, LAYER2, KC_RGUI
),
[_LAYER_1] = LAYOUT_split_3x5_3(
KC_TAB, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9,
KC_LCTL, XXXXXXX, XXXXXXX, XXXXXXX, KC_LALT, KC_RALT, KC_LEFT, KC_DOWN, KC_UP, KC_RIGHT,
KC_LSFT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
KC_LGUI, _______, KC_SPC, KC_ENT, LAYER3, KC_RGUI
),
[_LAYER_2] = LAYOUT_split_3x5_3(
KC_TAB, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_RCTL, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN,
KC_LCTL, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_RALT, KC_MINS, KC_EQL, KC_LBRC, KC_RBRC,
KC_LSFT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE,
KC_LGUI, LAYER3, KC_SPC, KC_ENT, _______, KC_RGUI
),
[_LAYER_3] = LAYOUT_split_3x5_3(
QK_BOOT, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
RM_TOGG, RM_HUEU, RM_SATU, RM_VALU, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
RM_NEXT, RM_HUED, RM_SATD, RM_VALD, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
KC_LGUI, _______, KC_SPC, KC_ENT, _______, KC_RGUI
)
};
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// Copyright 2025 QMK
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include_next <mcuconf.h>
#undef STM32_SERIAL_USE_USART1
#define STM32_SERIAL_USE_USART1 TRUE
#undef STM32_PWM_USE_TIM3
#define STM32_PWM_USE_TIM3 TRUE
#undef STM32_PLLM_VALUE
#define STM32_PLLM_VALUE 16
#undef STM32_PLLN_VALUE
#define STM32_PLLN_VALUE 192
#undef STM32_PLLQ_VALUE
#define STM32_PLLQ_VALUE 4
#undef STM32_PPRE1
#define STM32_PPRE1 STM32_PPRE1_DIV4
#undef STM32_PPRE2
#define STM32_PPRE2 STM32_PPRE2_DIV2
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# SZR35
![szr35](https://i.ibb.co/vvQPBTF9/szr35.jpg)
*The **SZR35** is a minimalist 36-key split keyboard. It follows the popular 3x5+3 layout and is aimed at users who value ergonomic typing, portability, and open-source firmware flexibility. It ships with Vial-compatible firmware and is built around an STM32 microcontroller.*
* Keyboard Maintainer: [diegorodriguezv](https://github.com/diegorodriguezv)
* Hardware:
* **Microcontroller:** STM32F401RBT6 (Cortex-M4, 256KB Flash, 64KB RAM)
* **Backlighting:** Addressable RGB (WS2812 or similar)
* **Connection:** USB-C on both halves, TRS jack for interconnect
* Hardware Availability:
* [HardToChooseOne](https://hardtochooseone.com) on [Amazon](https://www.amazon.com/gp/product/B0DD69RGHK).
* Alternatively sold from other websites under the SZRKBD brand.
Make example for this keyboard (after setting up your build environment):
make szrkbd/szr35:default
If you want you can use the keymap that came with the keyboard from factory:
make szrkbd/szr35:factory
You need to flash each half of the keyboard with the same firmware:
make szrkbd/szr35: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**: Holding top left key for the left half, top right key for the right half, while plugging in the USB cable.
* **Physical reset button**: Short the reset pads, marked within a white rectangle, while plugging in. Not the ones at the edge opposing the USB connectors but about 2 or 3 centimeters from that edge.
* **Keycode in layout**: Press the key mapped to `QK_BOOT` if it is available.