Notes on LEDs in older PCB

README.md

@@ -87,8 +87,8 @@ Many DIY enthusiasts commonly make certain mistakes during the building process.
   <img src="doc/mpr121_solder2.jpg" width="60%">  
   You can use the pins comes with the module, but you need to cut away the plastic pads.  
   <img src="doc/mpr121_solder3.jpg" width="60%">
-* 5x Sharp GP2Y0E03 or ST VL53L0X ToF sensor modules, you need cables as well.  
-  https://www.lcsc.com/product-detail/Angle-Linear-Position-Sensors_Sharp-Microelectronics-GP2Y0E03_C920270.html
+* 5x Sharp GP2Y0E03 or ST VL53L0X ToF sensor modules, you need cables as well. Please note that the pictures are taken from older version of PCB, the LEDs have been changed to side-facing ones.  
+  https://www.lcsc.com/product-detail/Angle-Linear-Position-Sensors_Sharp-Microelectronics-GP2Y0E03_C920270.html  
   <img src="doc/gp2y0e03_solder.jpg" width="60%">  
   <img src="doc/vl53l0x.jpg" width="60%">  
    You can use both of them in a same PCB, the firmware will identify each of them automatically.  

README_CN.md

@@ -93,8 +93,8 @@ https://discord.gg/M8f2PPQFEA
   你可以使用模块自带的引脚，但是你需要剪掉塑料垫。  
   <img src="doc/mpr121_solder3.jpg" width="60%">
 
-* 5x Sharp GP2Y0E03 或 ST VL53L0X ToF 传感器模块，你还需要一些排线。
-  https://www.lcsc.com/product-detail/Angle-Linear-Position-Sensors_Sharp-Microelectronics-GP2Y0E03_C920270.html
+* 5x Sharp GP2Y0E03 或 ST VL53L0X ToF 传感器模块，你还需要一些排线。注意下面这些照片是在早期版本 PCB 上拍的，上面的 LED 已经被更换为侧面出光的型号。  
+  https://www.lcsc.com/product-detail/Angle-Linear-Position-Sensors_Sharp-Microelectronics-GP2Y0E03_C920270.html  
   <img src="doc/gp2y0e03_solder.jpg" width="60%">  
   <img src="doc/vl53l0x.jpg" width="60%">  
   你可以在同一个 PCB 上同时使用这两种传感器，固件会自动识别它们。