Readme for new antenna mods

README.md

@@ -247,24 +247,30 @@ To achieve the best aesthetic results, I recommend using the combination of clea
 ### Assembly
 For most of the part, just follow the guide of AIC key.
 
-Soldering the 18P-0.5mm-1.0H FPC/FFC connector can be challenging. Here are some tips to make the process easier:
-* Use a small, sharp iron tip, the smaller the better.
-* Set your soldering iron to a lower temperature, below 280 degrees Celsius.
-* Apply a generous amount of high-quality solder flux to keep the pins "wet" during soldering.
-* Use thin low-temperature solder wire (for example, diameter of 0.3mm).
-* Start by soldering the mounting pins on both sides for proper alignment, then proceed with the 18 main pins.
-* Don't feed solder wire directly onto the main pins.
-* When soldering main pins, only apply a very small amount of solder to the iron tip.
-* If you apply too much solder, a solder wick can be used effectively to remove the excess.
+* The touchscreen will block PN532's RF signal so we need to offload the antenna to AIC Touch's PCB just like what we do in PN5180 version.
+  * To build PN5180 version, short the "PN532 ANT" (green mark in the picture). To build PN532 version, short the "PN5180 ANT" (red mark in the picture).     
+    <img src="doc/ant_short.png" width="60%">
+  * Not like the PN5180, the PN532 has 3 pins - it has a center tap. Here's how you offload the antenna from the PN532. Cut (with small knife or chisel) the original 2 traces of the antenna (green marks in the picture) and connect 3 "PN532 ANT" pins to the PN532 module.    
+    <img src="doc/pn532_ant.png" width="60%">
 
-Remember to attach 1mm-thick soft pads to support the touchscreen. You can use 1mm 3M VHB double-sided tape, but do NOT remove the red film liner (don't let the tape stick to the touchscreen).
+* Soldering the 18P-0.5mm-1.0H FPC/FFC connector can be challenging. Here are some tips to make the process easier:
+  * Use a small, sharp iron tip, the smaller the better.
+  * Set your soldering iron to a lower temperature, below 280 degrees Celsius.
+  * Apply a generous amount of high-quality solder flux to keep the pins "wet" during soldering.
+  * Use thin low-temperature solder wire (for example, diameter of 0.3mm).
+  * Start by soldering the mounting pins on both sides for proper alignment, then proceed with the 18 main pins.
+  * Don't feed solder wire directly onto the main pins.
+  * When soldering main pins, only apply a very small amount of solder to the iron tip.
+  * If you apply too much solder, a solder wick can be used effectively to remove the excess.
 
-<img src="doc/touch_assemble_1.jpg" width="30%">
-<img src="doc/touch_assemble_2.jpg" width="30%">
+* Remember to put 1mm-thick soft pads to support the touchscreen. You can use 1mm 3M VHB double-sided tape, but do NOT remove the red film liner (don't let the tape stick to the touchscreen).
 
-It's done.
+  <img src="doc/touch_assemble_1.jpg" width="30%">
+  <img src="doc/touch_assemble_2.jpg" width="30%">
 
-<img src="doc/touch_assemble_3.jpg" width="30%">
+* Done!
+
+  <img src="doc/touch_assemble_3.jpg" width="30%">
 
 ## Firmware
 * UF2 file is in `Production\Firmware` folder.

README_CN.md

@@ -249,21 +249,27 @@ AIC Touch 是 AIC Pico 的另一种版本，配备了触摸屏。不过它微小
 ### 组装
 对于大部分内容，请参考 AIC Key 的制作。
 
-焊接 18P-0.5mm-1.0H FPC/FFC 连接器很有挑战。以下是一些提示：
-* 使用小而尖锐的烙铁头，越小越好。
-* 将你的焊接铁温度设定在较低的温度，大约 280 摄氏度。
-* 使用大量的高质量焊接助剂，以保持引脚在焊接过程中“湿润”。
-* 首先焊接两侧的固定引脚以确保正确的对齐，然后焊接 18 个主引脚。
-* 避免直接将焊锡丝喂到主引脚来焊接。
-* 在焊接主引脚时，只需要在烙铁尖上附着极少量的焊锡。
-* 如果你用了过多的焊锡，可以用吸锡带去除多余的焊锡。
+* 触摸屏会严重阻挡 PN532 的 RF 信号，所以我们需要将天线转移到 AIC Touch 的 PCB 上，就像前面 PN5180 版本那样。
+  * 制作 PN5180 版本时需要短接 "PN532 ANT"（图片中的绿色标记）。制作 PN532 版本时则需要短接 "PN5180 ANT"（图片中的红色标记）。    
+    <img src="doc/ant_short.png" width="60%">
+  * 和 PN5180 不同，PN532 有 3 个天线引脚。要把 PN532 的天线转移到我们 AIC Touch 的 PCB 上，先用小刀或凿子切断原来的 2 条天线走线（图片中的绿色标记），然后将 3 个 "PN532 ANT" 引脚连接到 PN532 模块对应位置。    
+    <img src="doc/pn532_ant.png" width="60%">
 
-记得贴一层 1mm 厚度的软垫以支撑触摸屏。你可以用 1mm 厚度的 3M VHB 双面胶带，但是不要移除红色的保护层（绝对不要让胶带粘在触摸屏上）。
+* 焊接 18P-0.5mm-1.0H FPC/FFC 连接器很有挑战。以下是一些提示：
+  * 使用小而尖锐的烙铁头，越小越好。
+  * 将你的焊接铁温度设定在较低的温度，大约 280 摄氏度。
+  * 使用大量的高质量焊接助剂，以保持引脚在焊接过程中“湿润”。
+  * 首先焊接两侧的固定引脚以确保正确的对齐，然后焊接 18 个主引脚。
+  * 避免直接将焊锡丝喂到主引脚来焊接。
+  * 在焊接主引脚时，只需要在烙铁尖上附着极少量的焊锡。
+  * 如果你用了过多的焊锡，可以用吸锡带去除多余的焊锡。
+
+* 记得贴一层 1mm 厚度的软垫以支撑触摸屏。你可以用 1mm 厚度的 3M VHB 双面胶带，但是不要移除红色的保护层（绝对不要让胶带粘在触摸屏上）。
 
   <img src="doc/touch_assemble_1.jpg" width="30%">
   <img src="doc/touch_assemble_2.jpg" width="30%">
 
-搞定了。
+* 搞定！
 
   <img src="doc/touch_assemble_3.jpg" width="30%">