diff --git a/keyboards/tau4/common/glcdfont.c b/keyboards/tau4/common/glcdfont.c
new file mode 100755
index 0000000000..05577612a1
--- /dev/null
+++ b/keyboards/tau4/common/glcdfont.c
@@ -0,0 +1,105 @@
+/*
+Copyright 2020 Oliver Gaskell <me@gaskell.tech>
+
+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 "progmem.h"
+
+static const unsigned char PROGMEM font[] = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3e, 0x5b, 0x4f, 0x5b, 0x3e, 0x00, 0x3e, 0x6b, 0x4f, 0x6b,
+ 0x3e, 0x00, 0x1c, 0x3e, 0x7c, 0x3e, 0x1c, 0x00, 0x18, 0x3c, 0x7e, 0x3c, 0x18, 0x00, 0x1c, 0x57,
+ 0x7d, 0x57, 0x1c, 0x00, 0x1c, 0x5e, 0x7f, 0x5e, 0x1c, 0x00, 0x00, 0x18, 0x3c, 0x18, 0x00, 0x00,
+ 0xff, 0xe7, 0xc3, 0xe7, 0xff, 0x00, 0x00, 0x18, 0x24, 0x18, 0x00, 0x00, 0xff, 0xe7, 0xdb, 0xe7,
+ 0xff, 0x00, 0x30, 0x48, 0x3a, 0x06, 0x0e, 0x00, 0x26, 0x29, 0x79, 0x29, 0x26, 0x00, 0x40, 0x7f,
+ 0x05, 0x05, 0x07, 0x00, 0x40, 0x7f, 0x05, 0x25, 0x3f, 0x00, 0x5a, 0x3c, 0xe7, 0x3c, 0x5a, 0x00,
+ 0x7f, 0x3e, 0x1c, 0x1c, 0x08, 0x00, 0x08, 0x1c, 0x1c, 0x3e, 0x7f, 0x00, 0x14, 0x22, 0x7f, 0x22,
+ 0x14, 0x00, 0x5f, 0x5f, 0x00, 0x5f, 0x5f, 0x00, 0x06, 0x09, 0x7f, 0x01, 0x7f, 0x00, 0x00, 0x66,
+ 0x89, 0x95, 0x6a, 0x00, 0x60, 0x60, 0x60, 0x60, 0x60, 0x00, 0x94, 0xa2, 0xff, 0xa2, 0x94, 0x00,
+ 0x08, 0x04, 0x7e, 0x04, 0x08, 0x00, 0x10, 0x20, 0x7e, 0x20, 0x10, 0x00, 0x08, 0x08, 0x2a, 0x1c,
+ 0x08, 0x00, 0x08, 0x1c, 0x2a, 0x08, 0x08, 0x00, 0x1e, 0x10, 0x10, 0x10, 0x10, 0x00, 0x0c, 0x1e,
+ 0x0c, 0x1e, 0x0c, 0x00, 0x30, 0x38, 0x3e, 0x38, 0x30, 0x00, 0x06, 0x0e, 0x3e, 0x0e, 0x06, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5f, 0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x07,
+ 0x00, 0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14, 0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12, 0x00, 0x23, 0x13,
+ 0x08, 0x64, 0x62, 0x00, 0x36, 0x49, 0x56, 0x20, 0x50, 0x00, 0x00, 0x08, 0x07, 0x03, 0x00, 0x00,
+ 0x00, 0x1c, 0x22, 0x41, 0x00, 0x00, 0x00, 0x41, 0x22, 0x1c, 0x00, 0x00, 0x2a, 0x1c, 0x7f, 0x1c,
+ 0x2a, 0x00, 0x08, 0x08, 0x3e, 0x08, 0x08, 0x00, 0x00, 0x80, 0x70, 0x30, 0x00, 0x00, 0x08, 0x08,
+ 0x08, 0x08, 0x08, 0x00, 0x00, 0x00, 0x60, 0x60, 0x00, 0x00, 0x20, 0x10, 0x08, 0x04, 0x02, 0x00,
+ 0x3e, 0x51, 0x49, 0x45, 0x3e, 0x00, 0x00, 0x42, 0x7f, 0x40, 0x00, 0x00, 0x72, 0x49, 0x49, 0x49,
+ 0x46, 0x00, 0x21, 0x41, 0x49, 0x4d, 0x33, 0x00, 0x18, 0x14, 0x12, 0x7f, 0x10, 0x00, 0x27, 0x45,
+ 0x45, 0x45, 0x39, 0x00, 0x3c, 0x4a, 0x49, 0x49, 0x31, 0x00, 0x41, 0x21, 0x11, 0x09, 0x07, 0x00,
+ 0x36, 0x49, 0x49, 0x49, 0x36, 0x00, 0x46, 0x49, 0x49, 0x29, 0x1e, 0x00, 0x00, 0x00, 0x14, 0x00,
+ 0x00, 0x00, 0x00, 0x40, 0x34, 0x00, 0x00, 0x00, 0x00, 0x08, 0x14, 0x22, 0x41, 0x00, 0x14, 0x14,
+ 0x14, 0x14, 0x14, 0x00, 0x00, 0x41, 0x22, 0x14, 0x08, 0x00, 0x02, 0x01, 0x59, 0x09, 0x06, 0x00,
+ 0x3e, 0x41, 0x5d, 0x59, 0x4e, 0x00, 0x7c, 0x12, 0x11, 0x12, 0x7c, 0x00, 0x7f, 0x49, 0x49, 0x49,
+ 0x36, 0x00, 0x3e, 0x41, 0x41, 0x41, 0x22, 0x00, 0x7f, 0x41, 0x41, 0x41, 0x3e, 0x00, 0x7f, 0x49,
+ 0x49, 0x49, 0x41, 0x00, 0x7f, 0x09, 0x09, 0x09, 0x01, 0x00, 0x3e, 0x41, 0x41, 0x51, 0x73, 0x00,
+ 0x7f, 0x08, 0x08, 0x08, 0x7f, 0x00, 0x00, 0x41, 0x7f, 0x41, 0x00, 0x00, 0x20, 0x40, 0x41, 0x3f,
+ 0x01, 0x00, 0x7f, 0x08, 0x14, 0x22, 0x41, 0x00, 0x7f, 0x40, 0x40, 0x40, 0x40, 0x00, 0x7f, 0x02,
+ 0x1c, 0x02, 0x7f, 0x00, 0x7f, 0x04, 0x08, 0x10, 0x7f, 0x00, 0x3e, 0x41, 0x41, 0x41, 0x3e, 0x00,
+ 0x7f, 0x09, 0x09, 0x09, 0x06, 0x00, 0x3e, 0x41, 0x51, 0x21, 0x5e, 0x00, 0x7f, 0x09, 0x19, 0x29,
+ 0x46, 0x00, 0x26, 0x49, 0x49, 0x49, 0x32, 0x00, 0x03, 0x01, 0x7f, 0x01, 0x03, 0x00, 0x3f, 0x40,
+ 0x40, 0x40, 0x3f, 0x00, 0x1f, 0x20, 0x40, 0x20, 0x1f, 0x00, 0x3f, 0x40, 0x38, 0x40, 0x3f, 0x00,
+ 0x63, 0x14, 0x08, 0x14, 0x63, 0x00, 0x03, 0x04, 0x78, 0x04, 0x03, 0x00, 0x61, 0x59, 0x49, 0x4d,
+ 0x43, 0x00, 0x00, 0x7f, 0x41, 0x41, 0x41, 0x00, 0x02, 0x04, 0x08, 0x10, 0x20, 0x00, 0x00, 0x41,
+ 0x41, 0x41, 0x7f, 0x00, 0x04, 0x02, 0x01, 0x02, 0x04, 0x00, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00,
+ 0x00, 0x03, 0x07, 0x08, 0x00, 0x00, 0x20, 0x54, 0x54, 0x78, 0x40, 0x00, 0x7f, 0x28, 0x44, 0x44,
+ 0x38, 0x00, 0x38, 0x44, 0x44, 0x44, 0x28, 0x00, 0x38, 0x44, 0x44, 0x28, 0x7f, 0x00, 0x38, 0x54,
+ 0x54, 0x54, 0x18, 0x00, 0x00, 0x08, 0x7e, 0x09, 0x02, 0x00, 0x18, 0xa4, 0xa4, 0x9c, 0x78, 0x00,
+ 0x7f, 0x08, 0x04, 0x04, 0x78, 0x00, 0x00, 0x44, 0x7d, 0x40, 0x00, 0x00, 0x20, 0x40, 0x40, 0x3d,
+ 0x00, 0x00, 0x7f, 0x10, 0x28, 0x44, 0x00, 0x00, 0x00, 0x41, 0x7f, 0x40, 0x00, 0x00, 0x7c, 0x04,
+ 0x78, 0x04, 0x78, 0x00, 0x7c, 0x08, 0x04, 0x04, 0x78, 0x00, 0x38, 0x44, 0x44, 0x44, 0x38, 0x00,
+ 0xfc, 0x18, 0x24, 0x24, 0x18, 0x00, 0x18, 0x24, 0x24, 0x18, 0xfc, 0x00, 0x7c, 0x08, 0x04, 0x04,
+ 0x08, 0x00, 0x48, 0x54, 0x54, 0x54, 0x24, 0x00, 0x04, 0x04, 0x3f, 0x44, 0x24, 0x00, 0x3c, 0x40,
+ 0x40, 0x20, 0x7c, 0x00, 0x1c, 0x20, 0x40, 0x20, 0x1c, 0x00, 0x3c, 0x40, 0x30, 0x40, 0x3c, 0x00,
+ 0x44, 0x28, 0x10, 0x28, 0x44, 0x00, 0x4c, 0x90, 0x90, 0x90, 0x7c, 0x00, 0x44, 0x64, 0x54, 0x4c,
+ 0x44, 0x00, 0x00, 0x08, 0x36, 0x41, 0x00, 0x00, 0x00, 0x00, 0x77, 0x00, 0x00, 0x00, 0x00, 0x41,
+ 0x36, 0x08, 0x00, 0x00, 0x02, 0x01, 0x02, 0x04, 0x02, 0x00, 0x3c, 0x26, 0x23, 0x26, 0x3c, 0x00,
+ 0x00, 0x06, 0x0e, 0x0e, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0xff, 0xff, 0xff, 0xff, 0x0f, 0x0f, 0x0f,
+ 0x0f, 0x0f, 0x0f, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0,
+ 0xf0, 0xf8, 0xfc, 0x3e, 0x1e, 0x06, 0x01, 0x00, 0x00, 0x00, 0x7f, 0x41, 0x41, 0x41, 0x7f, 0x00,
+ 0x7f, 0x41, 0x41, 0x41, 0x7f, 0x00, 0x00, 0x80, 0xc0, 0xe0, 0x7e, 0x5b, 0x4f, 0x5b, 0xfe, 0xc0,
+ 0x00, 0x00, 0xc0, 0x00, 0xdc, 0xd7, 0xde, 0xde, 0xde, 0xd7, 0xdc, 0x00, 0xc0, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xe0, 0x30, 0x1c, 0x0e, 0xfe, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03,
+ 0x0f, 0x1f, 0x3f, 0x3c, 0x78, 0x70, 0x60, 0x00, 0x00, 0x00, 0x7f, 0x41, 0x41, 0x41, 0x7f, 0x00,
+ 0x7f, 0x41, 0x41, 0x41, 0x7f, 0x00, 0x30, 0x7b, 0x7f, 0x78, 0x30, 0x20, 0x20, 0x30, 0x78, 0x7f,
+ 0x3b, 0x00, 0x03, 0x00, 0x0f, 0x7f, 0x0f, 0x0f, 0x0f, 0x7f, 0x0f, 0x00, 0x03, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x7f, 0x7f, 0xff, 0xf0, 0xf0, 0x70,
+ 0x00, 0x00, 0xe0, 0xe0, 0x00, 0x04, 0x0f, 0x0f, 0x0c, 0x0c, 0x0c, 0x0c, 0xff, 0x0e, 0x0c, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
diff --git a/keyboards/tau4/config.h b/keyboards/tau4/config.h
new file mode 100755
index 0000000000..d7e6ffe1bb
--- /dev/null
+++ b/keyboards/tau4/config.h
@@ -0,0 +1,72 @@
+/*
+Copyright 2020 Oliver Gaskell <me@gaskell.tech>
+
+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 "config_common.h"
+
+/* USB Device descriptor parameter */
+#define VENDOR_ID 0xFEED
+#define PRODUCT_ID 0x6060
+#define DEVICE_VER 0x0001
+#define MANUFACTURER taukeyboards
+#define PRODUCT tau4
+
+/* key matrix size */
+#define MATRIX_ROWS 4
+#define MATRIX_COLS 12
+
+/* key matrix pins */
+#define MATRIX_ROW_PINS { F4, F5, F6, F7 }
+#define MATRIX_COL_PINS { D4, D6, D7, B4, B5, B6, C6, C7, F1, F0, B0, B1 }
+#define UNUSED_PINS
+
+/* COL2ROW or ROW2COL */
+#define DIODE_DIRECTION COL2ROW
+
+/* Set 0 if debouncing isn't needed */
+#define DEBOUNCE 5
+
+#define RGB_DI_PIN B2
+#ifdef RGB_DI_PIN
+#define RGBLIGHT_ANIMATIONS
+#define RGBLIGHT_LAYERS
+#define RGBLED_NUM 10
+#define RGBLIGHT_HUE_STEP 8
+#define RGBLIGHT_SAT_STEP 16
+#define RGBLIGHT_VAL_STEP 8
+#define RGBLIGHT_LIMIT_VAL 128
+#endif
+
+#define ENCODERS_PAD_A { B3 }
+#define ENCODERS_PAD_B { B7 }
+#define ENCODER_RESOLUTION 1
+
+// Buggy, currently disabled
+/* #define EXTERNAL_EEPROM_I2C_BASE_ADDRESS 0b10100000
+#define EXTERNAL_EEPROM_I2C_ADDRESS(loc) (EXTERNAL_EEPROM_I2C_BASE_ADDRESS | ((((loc) >> 8) & 0x07) << 1))
+#define EXTERNAL_EEPROM_BYTE_COUNT 2048
+#define EXTERNAL_EEPROM_PAGE_SIZE 16
+#define EXTERNAL_EEPROM_ADDRESS_SIZE 1
+#define EXTERNAL_EEPROM_WRITE_TIME 5 */
+
+#define OLED_DISPLAY_ADDRESS 0x3C
+#define OLED_BRIGHTNESS 255
+#define OLED_IC OLED_IC_SSD1306
+#define OLED_DISPLAY_WIDTH 128
+#define OLED_DISPLAY_HEIGHT 32
+#define OLED_FONT_H "keyboards/tau4/common/glcdfont.c"
diff --git a/keyboards/tau4/keymaps/default/keymap.c b/keyboards/tau4/keymaps/default/keymap.c
new file mode 100755
index 0000000000..aff188e4c6
--- /dev/null
+++ b/keyboards/tau4/keymaps/default/keymap.c
@@ -0,0 +1,145 @@
+/*
+Copyright 2020 Oliver Gaskell <me@gaskell.tech>
+
+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
+
+enum layers {
+ _QWERTY = 0,
+ _NUMPAD,
+ _LOWER,
+ _RAISE,
+ _ADJUST
+};
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+ [_QWERTY] = LAYOUT_ortho_4x12(
+ KC_MUTE, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_BSPC,
+ KC_ESC, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT,
+ KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_ENT,
+ KC_BSPC, KC_LCTL, KC_LGUI, KC_LALT, MO(_LOWER), KC_SPC, KC_SPC, MO(_RAISE), KC_LEFT, KC_DOWN, KC_UP, KC_RGHT),
+
+ [_NUMPAD] = LAYOUT_ortho_4x12(
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_P7, KC_P8, KC_P9, KC_PSLS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_P4, KC_P5, KC_P6, KC_PAST,
+ KC_TRNS, TG(_NUMPAD), KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_P1, KC_P2, KC_P3, KC_PENT,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_P0, KC_PDOT, KC_PMNS, KC_PPLS),
+
+ [_LOWER] = LAYOUT_ortho_4x12(
+ KC_VOLD, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_INS,
+ KC_NLCK, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_LCBR, KC_RCBR, KC_UNDS, KC_PLUS, LSFT(KC_NUHS),
+ KC_TRNS, LSFT(KC_NUBS), KC_GRAVE, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, LSFT(KC_GRV), LSFT(KC_NUBS), KC_TRNS,
+ KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_HOME, KC_PGDN, KC_PGUP, KC_END),
+
+ [_RAISE] = LAYOUT_ortho_4x12(
+ KC_VOLU, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_DEL,
+ KC_CAPS, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_LBRC, KC_RBRC, KC_MINS, KC_EQL, KC_NUHS,
+ KC_TRNS, KC_PSCR, KC_SLCK, KC_PAUS, KC_APP, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_GRV, KC_NUBS, KC_TRNS,
+ KC_TAB, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_MSTP, KC_MPRV, KC_MPLY, KC_MNXT),
+
+ [_ADJUST] = LAYOUT_ortho_4x12(
+ KC_TRNS, RGB_TOG, RGB_MOD, RGB_HUD, RGB_HUI, RGB_SAD, RGB_SAI, RGB_VAD, RGB_VAI, KC_TRNS, KC_TRNS, RESET,
+ KC_TRNS, RGB_M_P, RGB_M_B, RGB_M_R, RGB_M_SW, RGB_M_SN, RGB_M_K, RGB_M_X, RGB_M_G, RGB_M_T, KC_TRNS, KC_TRNS,
+ KC_TRNS, TG(_NUMPAD), 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),
+};
+
+const rgblight_segment_t PROGMEM _RAISE_lighting[] = RGBLIGHT_LAYER_SEGMENTS(
+ {7, 1, 1, 202, 110}
+);
+const rgblight_segment_t PROGMEM _LOWER_lighting[] = RGBLIGHT_LAYER_SEGMENTS(
+ {7, 1, 125, 188, 80}
+);
+const rgblight_segment_t PROGMEM _ADJUST_lighting[] = RGBLIGHT_LAYER_SEGMENTS(
+ {7, 1, 32, 25, 127}
+);
+const rgblight_segment_t PROGMEM _NUMPAD_lighting[] = RGBLIGHT_LAYER_SEGMENTS(
+ {7, 1, HSV_BLUE}
+);
+const rgblight_segment_t PROGMEM _DEFAULT_lighting[] = RGBLIGHT_LAYER_SEGMENTS(
+ {7, 1, HSV_OFF}
+);
+const rgblight_segment_t* const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(
+ _DEFAULT_lighting,
+ _NUMPAD_lighting,
+ _LOWER_lighting,
+ _RAISE_lighting,
+ _ADJUST_lighting
+);
+
+void keyboard_post_init_user(void) {
+ rgblight_layers = my_rgb_layers;
+
+ // Uncomment for debug mode
+ /* debug_enable=true;
+ debug_matrix=true; */
+}
+
+layer_state_t layer_state_set_user(layer_state_t state) {
+ state = update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);
+
+ rgblight_set_layer_state(_QWERTY, layer_state_cmp(state, _QWERTY));
+ rgblight_set_layer_state(_NUMPAD, layer_state_cmp(state, _NUMPAD));
+ rgblight_set_layer_state(_LOWER, layer_state_cmp(state, _LOWER));
+ rgblight_set_layer_state(_RAISE, layer_state_cmp(state, _RAISE));
+ rgblight_set_layer_state(_ADJUST, layer_state_cmp(state, _ADJUST));
+
+ return state;
+}
+
+void encoder_update_user(uint8_t index, bool clockwise) {
+ if (index == 0) { /* First encoder */
+ if (clockwise) {
+ tap_code(KC_VOLU);
+ } else {
+ tap_code(KC_VOLD);
+ }
+ }
+}
+
+
+#ifdef OLED_DRIVER_ENABLE
+
+static void render_status(void) {
+ oled_write_P(PSTR("Tau.4 v1.0\n\n"), false);
+ oled_write_P(PSTR("Layer:\n"), false);
+
+ switch (get_highest_layer(layer_state)) {
+ case _QWERTY:
+ oled_write_P(PSTR("Default "), false);
+ break;
+ case _NUMPAD:
+ oled_write_P(PSTR("Numpad "), false);
+ break;
+ case _LOWER:
+ oled_write_P(PSTR("Lower "), false);
+ break;
+ case _RAISE:
+ oled_write_P(PSTR("Raise "), false);
+ break;
+ case _ADJUST:
+ oled_write_P(PSTR("Adjust "), false);
+ break;
+ default:
+ oled_write_P(PSTR("Undefined"), false);
+ }
+}
+
+void oled_task_user(void) {
+ render_status();
+}
+#endif
diff --git a/keyboards/tau4/keymaps/default/readme.md b/keyboards/tau4/keymaps/default/readme.md
new file mode 100644
index 0000000000..ee5d1b8398
--- /dev/null
+++ b/keyboards/tau4/keymaps/default/readme.md
@@ -0,0 +1,5 @@
+Default keymap:
+
+
+
+This layout supports 2x1u spacebar and 1x2u, and an encoder in the topmost position.
diff --git a/keyboards/tau4/readme.md b/keyboards/tau4/readme.md
new file mode 100644
index 0000000000..beea3f07a9
--- /dev/null
+++ b/keyboards/tau4/readme.md
@@ -0,0 +1,16 @@
+# τ.4
+
+
+
+A 40% ortholinear keyboard, developed by Oliver Gaskell. More info on [gaskell.tech](https://gaskell.tech/tau/four.html)
+
+* Keyboard Maintainer: [Oliver Gaskell](https://github.com/ogaskell)
+* Hardware Supported: Tau4 PCB rev1.0, Tau4 PCB rev1.1
+* Hardware Availability: Group Buy - Opens 05 Feb 2021 [More Details](https://gaskell.tech/tau/four.html)
+
+
+Make example for this keyboard (after setting up your build environment):
+
+ make tau4: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).
diff --git a/keyboards/tau4/rules.mk b/keyboards/tau4/rules.mk
new file mode 100755
index 0000000000..712646abc5
--- /dev/null
+++ b/keyboards/tau4/rules.mk
@@ -0,0 +1,28 @@
+# MCU name
+MCU = atmega32u4
+
+# Bootloader selection
+BOOTLOADER = atmel-dfu
+
+# Build Options
+# change yes to no to disable
+#
+BOOTMAGIC_ENABLE = no # Virtual DIP switch configuration
+MOUSEKEY_ENABLE = no # Mouse keys
+EXTRAKEY_ENABLE = yes # Audio control and System control
+CONSOLE_ENABLE = no # Console for debug
+COMMAND_ENABLE = no # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes # USB Nkey Rollover
+BACKLIGHT_ENABLE = no # Enable keyboard backlight functionality
+RGBLIGHT_ENABLE = yes # Enable keyboard RGB underglow
+BLUETOOTH_ENABLE = no # Enable Bluetooth
+AUDIO_ENABLE = no # Audio output
+ENCODER_ENABLE = yes # Rotary Encoder support
+OLED_DRIVER_ENABLE = yes # OLED display support
+# EEPROM_DRIVER ?= i2c # Driver for external EEPROM chip
+# This is currently not working due to QMK not officially supporting the chip used on the Tau4, I am working on a fix.
+
+LAYOUTS = ortho_4x12
diff --git a/keyboards/tau4/tau4.c b/keyboards/tau4/tau4.c
new file mode 100755
index 0000000000..3002566cea
--- /dev/null
+++ b/keyboards/tau4/tau4.c
@@ -0,0 +1,18 @@
+/*
+Copyright 2020 Oliver Gaskell <me@gaskell.tech>
+
+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 "tau4.h"
diff --git a/keyboards/tau4/tau4.h b/keyboards/tau4/tau4.h
new file mode 100755
index 0000000000..d9ff502116
--- /dev/null
+++ b/keyboards/tau4/tau4.h
@@ -0,0 +1,32 @@
+/*
+Copyright 2020 Oliver Gaskell <me@gaskell.tech>
+
+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 "quantum.h"
+
+#define LAYOUT_ortho_4x12( \
+ K000, K001, K002, K003, K004, K005, K006, K007, K008, K009, K010, K011, \
+ K100, K101, K102, K103, K104, K105, K106, K107, K108, K109, K110, K111, \
+ K200, K201, K202, K203, K204, K205, K206, K207, K208, K209, K210, K211, \
+ K300, K301, K302, K303, K304, K305, K306, K307, K308, K309, K310, K311 \
+) { \
+ { K000, K001, K002, K003, K004, K005, K006, K007, K008, K009, K010, K011 }, \
+ { K100, K101, K102, K103, K104, K105, K106, K107, K108, K109, K110, K111 }, \
+ { K200, K201, K202, K203, K204, K205, K206, K207, K208, K209, K210, K211 }, \
+ { K300, K301, K302, K303, K304, K305, K306, K307, K308, K309, K310, K311 } \
+}