[Keyboard] Add modded Razer Orbweaver with RP2040

keyboards/handwired/orbweaver/config.h

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+// Copyright 2023 a_marmot
+//
+// 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/>.
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#define DRIVER_COUNT 1
+#define DRIVER_ADDR_1 0b1110100
+#define RGB_MATRIX_LED_COUNT 20
+#define ISSI_TIMEOUT 100
+#define ISSI_PERSISTENCE 0
+#define I2C1_CLOCK_SPEED 100000
+#define RGB_MATRIX_CENTER { 40, 30 }

keyboards/handwired/orbweaver/info.json

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+{
+    "manufacturer": "a_marmot",
+    "keyboard_name": "orbweaver",
+    "maintainer": "a_marmot",
+    "bootloader": "rp2040",
+    "diode_direction": "ROW2COL",
+    "features": {
+        "bootmagic": true,
+        "command": false,
+        "console": false,
+        "extrakey": true,
+        "mousekey": true,
+        "nkro": true
+    },
+    "matrix_pins": {
+        "rows": ["GP4", "GP5", "GP6", "GP7", "GP8", "GP9"],
+        "cols": ["GP12", "GP13", "GP14", "GP15", "GP16"]
+    },
+    "processor": "RP2040",
+    "url": "https://geekhack.org/index.php?topic=119396.0",
+    "usb": {
+        "device_version": "1.0.0",
+        "pid": "0x0000",
+        "vid": "0xFEED"
+    },
+    "layouts": {
+        "LAYOUT": {
+            "layout": [
+                { "matrix": [0, 0], "x": 0, "y": 0 },
+                { "matrix": [0, 1], "x": 1, "y": 0 },
+                { "matrix": [0, 2], "x": 2, "y": 0 },
+                { "matrix": [0, 3], "x": 3, "y": 0 },
+                { "matrix": [0, 4], "x": 4, "y": 0 },
+                { "matrix": [1, 0], "x": 0, "y": 1 },
+                { "matrix": [1, 1], "x": 1, "y": 1 },
+                { "matrix": [1, 2], "x": 2, "y": 1 },
+                { "matrix": [1, 3], "x": 3, "y": 1 },
+                { "matrix": [1, 4], "x": 4, "y": 1 },
+                { "matrix": [2, 0], "x": 0, "y": 2 },
+                { "matrix": [2, 1], "x": 1, "y": 2 },
+                { "matrix": [2, 2], "x": 2, "y": 2 },
+                { "matrix": [2, 3], "x": 3, "y": 2 },
+                { "matrix": [2, 4], "x": 4, "y": 2 },
+                { "matrix": [3, 0], "x": 0, "y": 3 },
+                { "matrix": [3, 1], "x": 1, "y": 3 },
+                { "matrix": [3, 2], "x": 2, "y": 3 },
+                { "matrix": [3, 3], "x": 3, "y": 3 },
+                { "matrix": [3, 4], "x": 4, "y": 3 },
+                { "matrix": [4, 0], "x": 0, "y": 4 },
+                { "matrix": [4, 1], "x": 1, "y": 4 },
+                { "matrix": [4, 2], "x": 2, "y": 4 },
+                { "matrix": [4, 3], "x": 3, "y": 4 },
+                { "matrix": [4, 4], "x": 4, "y": 4 },
+                { "matrix": [5, 0], "x": 0, "y": 5 },
+                { "matrix": [5, 1], "w": 4, "x": 1, "y": 5 }
+            ]
+        }
+    }
+}

keyboards/handwired/orbweaver/keymaps/default/keymap.c

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+/* Copyright 2023 a_marmot
+*
+* 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/>.
+*/
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+//generic default keymap with Razor defaults (+ mode toggle)
+
+    /*
+     * ┌───┬───┬───┬───┬───┐
+     * │Esc│ 1 │ 2 │ 3 │ 4 │
+     * ├───┼───┼───┼───┼───┤
+     * │Tab│ q │ w │ e │ r │
+     * ├───┼───┼───┼───┼───┤
+     * │Cap│ a │ s │ d │ f │
+     * ├───┼───┼───┼───┼───┤
+     * │Shi│ z │ x │ c │ v │
+     * ├───┼───┼───┼───┼───┤
+     * │Alt│ ↑ │ ↓ │ → │ ← │
+     * ├───────┴┬──┴───┴───┤
+     * │Spacebar│change map│
+     * └────────┴──────────┘
+     */
+
+     [0] = LAYOUT(
+        KC_ESC, KC_1, KC_2, KC_3, KC_4,
+        KC_TAB, KC_Q, KC_W, KC_E, KC_R,
+        KC_CAPS, KC_A, KC_S, KC_D, KC_F,
+        KC_LSFT, KC_Z, KC_X, KC_C, KC_V,
+        KC_LALT, KC_UP, KC_DOWN, KC_RIGHT, KC_LEFT,
+        KC_SPACE, TO(1)
+    ),
+
+//Second example keymap with all modifier keys replaced with numbers or letters
+
+    /*
+     * ┌───┬───┬───┬───┬───┐
+     * │ 0 │ 1 │ 2 │ 3 │ 4 │
+     * ├───┼───┼───┼───┼───┤
+     * │ i │ q │ w │ e │ r │
+     * ├───┼───┼───┼───┼───┤
+     * │ j │ a │ s │ d │ f │
+     * ├───┼───┼───┼───┼───┤
+     * │ k │ z │ x │ c │ v │
+     * ├───┼───┼───┼───┼───┤
+     * │ l │ ↑ │ ↓ │ → │ ← │
+     * ├───────┴┬──┴───┴───┤
+     * │Spacebar│change map│
+     * └────────┴──────────┘
+     */
+
+   [1] = LAYOUT(
+        KC_0, KC_1, KC_2, KC_3, KC_4,
+        KC_I, KC_Q, KC_W, KC_E, KC_R,
+        KC_J, KC_A, KC_S, KC_D, KC_F,
+        KC_K, KC_Z, KC_X, KC_C, KC_V,
+        KC_L, KC_UP, KC_DOWN, KC_RIGHT, KC_LEFT,
+        KC_SPACE, TO(0)
+    ) 
+//, add more keymaps here
+
+};
+
+static const uint8_t colormap[][20][3] = {
+
+// colors for the default key map in hex RGB values
+	{
+		{0x00, 0x00, 0xFF},{0xE7, 0xFF, 0x00},{0xE7, 0xFF, 0x00},{0xE7, 0xFF, 0x00},{0xE7, 0xFF, 0x00},
+		{0xFF, 0x70, 0x00},{0x00, 0xFF, 0xFF},{0x80, 0x00, 0xFF},{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF},
+		{0xFF, 0x70, 0x00},{0x80, 0x00, 0xFF},{0x80, 0x00, 0xFF},{0x80, 0x00, 0xFF},{0x00, 0xFF, 0xFF},
+		{0xFF, 0x70, 0x00},{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF}
+	},
+
+// colors for the 2nd key map 
+	{
+		{0xE7, 0xFF, 0x00},{0xE7, 0xFF, 0x00},{0xE7, 0xFF, 0x00},{0xE7, 0xFF, 0x00},{0xE7, 0xFF, 0x00},
+		{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF},{0x80, 0x00, 0xFF},{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF},
+		{0x00, 0xFF, 0xFF},{0x80, 0x00, 0xFF},{0x80, 0x00, 0xFF},{0x80, 0x00, 0xFF},{0x00, 0xFF, 0xFF},
+		{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF},{0x00, 0xFF, 0xFF}
+	}
+//, add more keymaps here
+
+};	
+
+
+bool rgb_matrix_indicators_advanced_user(uint8_t led_min, uint8_t led_max) {
+    for (uint8_t i = led_min; i < led_max; i++) {
+       	rgb_matrix_set_color(i, 
+       	colormap[get_highest_layer(layer_state|default_layer_state)][i][0],
+       	colormap[get_highest_layer(layer_state|default_layer_state)][i][1],
+       	colormap[get_highest_layer(layer_state|default_layer_state)][i][2]);
+	}
+
+    return false;
+}
+

keyboards/handwired/orbweaver/orbweaver.c

@@ -0,0 +1,85 @@
+// Copyright 2023 a_marmot
+//
+// 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/>.
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+// This IS31FL3731 configuration is for a Razer Orbweaver Chroma.  
+// It was reverse-engineered by testing all possible Cx_y combinations (144 total), 
+// and determining which ones addressed individual diodes (60 total). These were then
+// placed in order R-G-B, sweeping left to right, and then top to bottom.  
+
+#include "config.h"
+#include QMK_KEYBOARD_H
+
+const is31_led PROGMEM g_is31_leds[RGB_MATRIX_LED_COUNT] = {
+/* Refer to IS31 manual for these locations
+ *   driver
+ *   |  R location
+ *   |  |      G location
+ *   |  |      |      B location
+ *   |  |      |      | */
+    {0, C9_1,  C8_1,  C7_1}, //top left key.
+    {0, C9_2,  C8_2,  C7_2},	
+    {0, C9_3,  C8_3,  C7_3},
+    {0, C9_4,  C8_4,  C7_4},
+    {0, C9_5,  C8_5,  C7_5}, //top right key. 
+    {0, C9_6,  C8_6,  C7_6},
+    {0, C9_7,  C8_7,  C6_6},      
+    {0, C9_8,  C7_7,  C6_7},
+    {0, C1_8,  C2_8,  C3_8},  
+    {0, C1_7,  C2_7,  C3_7},
+    {0, C1_6,  C2_6,  C3_6},
+    {0, C1_5,  C2_5,  C3_5},  
+    {0, C1_4,  C2_4,  C3_4},  
+    {0, C1_3,  C2_3,  C3_3},  
+    {0, C1_2,  C2_2,  C4_3},
+    {0, C1_1,  C3_2,  C4_2}, //lower left key
+    {0, C9_9,  C8_9,  C7_9},  
+    {0, C9_10,  C8_10,  C7_10},
+    {0, C9_11,  C8_11,  C7_11},
+    {0, C9_12,  C8_12,  C7_12} //lower right key
+
+};
+
+led_config_t g_led_config = {
+     // Matrix location to LED index
+     {
+         { 0, 2, 3, 4, 5 },
+         { 6, 7, 8, 9, 10 },
+         { 11, 12, 13, 14, 15 },
+         { 16, 17, 18, 19, 19 },
+         { NO_LED, NO_LED, NO_LED, NO_LED, NO_LED },
+         { NO_LED, NO_LED }
+     },
+
+     // LED index to physical location
+     {
+         {0,0}, {20,0}, {40,0}, {60,0}, {80,0},
+         {0,20}, {20,20}, {40,20}, {60,20}, {80,20},
+         {0,40}, {20,40}, {40,40}, {60,40}, {80,40},
+         {0,60}, {20,60}, {40,60}, {60,60}, {80,60}
+     },
+
+     // LED index to flags
+     {
+         4, 4, 4, 4, 4,
+         4, 4, 4, 4, 4,
+         4, 4, 4, 4, 4,
+         4, 4, 4, 4, 4
+     }
+ };
+
+
+

keyboards/handwired/orbweaver/readme.md

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+# orbweaver
+
+This firmware is for a Razer Orbweaver Chroma keypad, modded to replace the stock MCU
+with an Elite Pi RP2040 microcontroller. Mod instructions can be found on geekhack
+https://geekhack.org/index.php?topic=119396.0
+
+The firmware controls a 6x5 key matrix (4x5 keypad + 6 additional keys
+on the thumb pad and up to 4 additional keys added by user). It also controls a
+IS31FL3731 RGB Matrix controller (on the Chroma model) via I2C interface. This requires
+a single I2C Driver with 20 common anode RGB LEDs. I found that the I2C clock speed must
+be slowed down to 100 kHz for the IS31 chip to keep up (the default for RP2040 seems to
+be 400 kHz unless specified otherwise).  
+
+The default key map (layer 0) is a generic layer based on the original Razer defaults. 
+You can change or add layers as needed, and change static colors in keymap.c
+
+Many thanks to bomtarnes, Drashna, Dasky, sigprof, and casuanoob for helpful discussions
+and coding suggestions and snippets.
+
+* Keyboard Maintainer: [a_marmot](https://github.com/a-marmot)
+* Hardware Supported: RP2040 + IS31FL3731
+* Hardware Availability: https://geekhack.org/index.php?topic=119396.0
+
+Make example for this keyboard (after setting up your build environment):
+
+    qmk compile -kb /handwired/orbweaver -km default
+
+Flashing example for this keyboard:
+
+    When placed in bootloader mode, the RP2040 appears as an external flash drive. Just 
+    copy the .uf2 file to the mounted drive.
+
+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 2 ways:
+
+* Press and hold the upper left hand key on the main keyboard while you plug in the USB.
+* Press and release both reset buttons on the top of the RP2040 inside the modded unit. 

keyboards/handwired/orbweaver/rules.mk

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+# Add support for 3731 RGB matrix controller
+RGB_MATRIX_ENABLE = yes
+RGB_MATRIX_DRIVER = IS31FL3731