diff --git a/firmware/Add-sensors-to-repeaters.md b/firmware/Add-sensors-to-repeaters.md
index 6a776f2..e4d8d31 100644
--- a/firmware/Add-sensors-to-repeaters.md
+++ b/firmware/Add-sensors-to-repeaters.md
@@ -7,38 +7,38 @@ This is the instruction to add sensors to repeaters:
## 1. Quick Wiring
| Board | Wiring for I2C sensors | Notes |
| ------------- | ------------- | ------------- |
-| Heltec v3 / v4 / WSL3 | 3.3v => 3.3v
GND => GND
17 => SDA
18 => SCL
GND => SDO | On Heltec v3, the GPIO17 and 18 are tiny pads in the middle of the board bottom. |
-| Heltec T114 | 3.3v => 3.3v
GND => GND
**41** => SDA
**42** => SCL
3.3v => SDO | [Not tested yet] PowerSaving should work with GPIO 41,42 |
-| RAK4631 | 3.3v => 3.3v
GND => GND
SDA => SDA
SCL => SCL
3.3v => SDO | Both firmwares work
PowerSaving has additional features |
-| Xiao NRF52 | 3.3v => 3.3v
GND => GND
D7 => SDA
D6 => SCL
3.3v => SDO | Both firmwares work
PowerSaving has additional features |
-| Xiao S3 | 3.3v => 3.3v
GND => GND
D4 => SDA
D5 => SCL
3.3v => SDO | Both firmwares work
PowerSaving has additional features |
+| Heltec v3 / v4 / WSL3 | 3.3v => 3.3v
GND => GND
17 => SDA
18 => SCL
GND => SDO (BME280/680) | On Heltec v3, the GPIO17 and 18 are tiny pads in the middle of the board bottom. |
+| Heltec T114 | 3.3v => 3.3v
GND => GND
**0.16** => SDA
**0.13** => SCL
GND => SDO (BME280/680)| Not tested yet |
+| RAK4631 | 3.3v => 3.3v
GND => GND
SDA => SDA
SCL => SCL
GND => SDO (BME280/680) | Both firmwares work
PowerSaving has additional features |
+| Xiao NRF52 | 3.3v => 3.3v
GND => GND
D7 => SDA
D6 => SCL
GND => SDO (BME280/680) | Both firmwares work
PowerSaving has additional features |
+| Xiao S3 | 3.3v => 3.3v
GND => GND
D4 => SDA
D5 => SCL
GND => SDO (BME280/680) | Both firmwares work
PowerSaving has additional features |
+
+## 2. Boards
+This section is for boards with some notes.
-## 2. Notes for Boards
### Heltec v3
On Heltec v3, the GPIO17 and 18 are tiny pads in the middle of the board bottom.
- It is small. So solder with care.
-## 3. Notes for I2C Sensors
+## 3. I2C Sensors
+This section will be updated to include all supported sensors.
+
### BME280
The BME280 is a compact environmental sensor by Bosch that measures temperature, humidity, and barometric pressure.
-* Heltec v3 and v4 does not officially expose GPIO17 and 18. Therefore, we decided to use GPIO 41 and 42 for I2C sensor.
-* The default I2C address for Adafruit BME280 is 0x77. You do not need to wire 3.3v to SDO
-* For other BME280 boards, you are strongly recommended to wire 3.3v to SDO to force to use address 0x77. Else, the I2C address may jump either 0x76 and 0x77.
+* MeshCore requires I2C address **0x76** for BME280
+* For Adafruit BME280, you need to solder the Addr pad to use I2C address 0x76
+* For other BME280 boards, you are strongly recommended to wire **GND to SDO** to force to use address 0x77. Else, the I2C address may jump either 0x76 and 0x77.
-
+ 
### BME680
The BME680 is a compact environmental sensor by Bosch that measures temperature, humidity, barometric pressure, and air quality (gas/VOC).
-* Note: As of 20 Dec 2025, MeshCore app can not show the Gas telemetry properly.
-* Heltec v3 and v4 does not officially expose GPIO17 and 18. Therefore, we decided to use GPIO 41 and 42 for I2C sensor.
-* The default I2C address for Adafruit BME280 is 0x77. You do not need to wire 3.3v to SDO
-* For other BME680 boards, you are strongly recommended to wire 3.3v to SDO to force to use address 0x77. Else, the I2C address may jump either 0x76 and 0x77.
+* Note: As of 20 Dec 2025, MeshCore app can not show the Gas telemetry properly in Channel 1 or 2.
+* MeshCore requires I2C address **0x76** for BME680
+* For Adafruit BME280, you need to solder the Addr pad to use I2C address 0x76.
+* For other BME280 boards, you are strongly recommended to wire **GND to SDO** to force to use address 0x77. Else, the I2C address may jump either 0x76 and 0x77.
-
-
-
-