From 92b134d562e1cfd815c9ec537c8e0216e8462c32 Mon Sep 17 00:00:00 2001
From: nikki-uwu <manokhin.gleb@gmail.com>
Date: Tue, 6 Oct 2026 16:53:50 +0200
Subject: [PATCH 1/2] Add BOARD_TTGO_TOI_PLUS board support

---
 board-defaults.json        | 31 +++++++++++++++++++++++++++++++
 board-defaults.schema.json |  3 ++-
 platformio.ini             | 14 ++++++++++++++
 src/consts.h               |  2 ++
 4 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/board-defaults.json b/board-defaults.json
index 13531451a..4c03f1791 100644
--- a/board-defaults.json
+++ b/board-defaults.json
@@ -624,6 +624,37 @@
 				"needManualReboot": false,
 				"shouldOnlyUseDefaults": false
 			}
+		},
+		"BOARD_TTGO_TOI_PLUS": {
+			"values": {
+				"SENSORS": [
+					{
+						"protocol": "I2C",
+						"imu": "IMU_BNO085",
+						"rotation": "DEG_270",
+						"scl": "18",
+						"sda": "19",
+						"int": "5"
+					}
+				],
+				"BATTERY": {
+					"type": "BAT_EXTERNAL",
+					"r1": 1,
+					"r2": 1,
+					"shieldR": 0,
+					"pin": "2"
+				},
+				"LED": {
+					"LED_PIN": "3",
+					"LED_INVERTED": false
+				}
+			},
+			"flashingRules": {
+				"applicationOffset": 65536,
+				"needBootPress": false,
+				"needManualReboot": false,
+				"shouldOnlyUseDefaults": false
+			}
 		}
 	}
 }
diff --git a/board-defaults.schema.json b/board-defaults.schema.json
index abfce2314..d67e48c8c 100644
--- a/board-defaults.schema.json
+++ b/board-defaults.schema.json
@@ -118,7 +118,8 @@
 				"BOARD_WEMOSWROOM02",
 				"BOARD_XIAO_ESP32C3",
 				"BOARD_ESP32S3_SUPERMINI",
-				"BOARD_ESP32C6_SUPERMINI"
+				"BOARD_ESP32C6_SUPERMINI",
+				"BOARD_TTGO_TOI_PLUS"
 			],
 			"description": "Board Type"
 		},
diff --git a/platformio.ini b/platformio.ini
index bc279b6de..66041d446 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -262,3 +262,17 @@ build_flags =
   -D PRODUCT_NAME='"SlimeVR Glove (dev)"'
 board = lolin_c3_mini
 monitor_filters = colorize, esp32_exception_decoder
+
+[env:BOARD_TTGO_TOI_PLUS]
+platform = espressif32 @ 6.7.0
+platform_packages =
+  framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#3.0.1
+  framework-arduinoespressif32-libs @ https://github.com/espressif/arduino-esp32/releases/download/3.0.1/esp32-arduino-libs-3.0.1.zip
+custom_slime_board = BOARD_TTGO_TOI_PLUS
+build_flags =
+  ${env.build_flags}
+  -DESP32C3
+board = ttgo-t-oi-plus
+monitor_filters = colorize, esp32_exception_decoder
+; LilyGO T-OI Plus ESP32-C3: USB-UART bridge board (CH340 on UART0, GPIO20/21),
+; no native-USB path.
diff --git a/src/consts.h b/src/consts.h
index 4e354b399..426afc36e 100644
--- a/src/consts.h
+++ b/src/consts.h
@@ -100,6 +100,7 @@ enum class SensorTypeID : uint8_t {
 #define BOARD_SLIMEVR_BUTTERFLY_DEV 25
 #define BOARD_SLIMEVR_BUTTERFLY 26
 #define BOARD_ESP32C6_SUPERMINI 27
+#define BOARD_TTGO_TOI_PLUS 28
 #define BOARD_DEV_RESERVED 250  // Reserved, should not be used in any release firmware
 
 #define BOARD_N0 "BOARD_UNKNOWN"
@@ -130,6 +131,7 @@ enum class SensorTypeID : uint8_t {
 #define BOARD_N25 "BOARD_SLIMEVR_BUTTERFLY_DEV"
 #define BOARD_N26 "BOARD_SLIMEVR_BUTTERFLY"
 #define BOARD_N27 "BOARD_ESP32C6_SUPERMINI"
+#define BOARD_N28 "BOARD_TTGO_TOI_PLUS"
 #define BOARD_N250 \
 	"BOARD_DEV_RESERVED"  // Reserved, should not be used in any release firmware
 

From 7e1ff17f3b8237a5475224103ff882a238db9d88 Mon Sep 17 00:00:00 2001
From: nikki-uwu <manokhin.gleb@gmail.com>
Date: Tue, 6 Oct 2026 17:35:20 +0200
Subject: [PATCH 2/2] Use real voltage divider values for T-OI Plus (100K/100K
 on board, 2x scaling)

---
 board-defaults.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/board-defaults.json b/board-defaults.json
index 4c03f1791..c51bca101 100644
--- a/board-defaults.json
+++ b/board-defaults.json
@@ -639,8 +639,8 @@
 				],
 				"BATTERY": {
 					"type": "BAT_EXTERNAL",
-					"r1": 1,
-					"r2": 1,
+					"r1": 100,
+					"r2": 100,
 					"shieldR": 0,
 					"pin": "2"
 				},