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README.md
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@ -68,7 +68,7 @@ Many DIY enthusiasts commonly make certain mistakes during the building process.
https://www.lcsc.com/product-detail/Signal-Switches-Encoders-Decoders-Multiplexers_Texas-Instruments-TCA9548APWR_C130026.html
* 3x MPR121 modules, there're many types in the market, choose ones like this.
https://www.sparkfun.com/products/retired/9695
Before solder MP121 module to the main PCB board, remember to use a knife to **cut (unshort) the ADDR pin** which is short by default. Please be careful not to cut more than necessary.
Before solder MP121 module to the main PCB board, remember to use a knife to **cut (unshort) the tiny trace that connects ADDR to the GND**. Please be careful not to cut more than necessary.
<img src="doc/mpr121_cut.png" width="40%">
There's not enough space for the whole height of MPR121 module plus the lead pads. So you need to solder the module like the picture shows below.
First apply some insulation tape.

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README_CN.md
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@ -71,7 +71,7 @@ https://github.com/whowechina/
* 3x MPR121 模块，市面上有很多种，选择这种类型的。
https://www.sparkfun.com/products/retired/9695
在焊接 MPR121 模块到主 PCB 板之前，记得用锋利的小刀**切断默认的 ADDR 引脚**，注意绝对不要切过头。
在焊接 MPR121 模块到主 PCB 板之前，记得用小刀**切断 ADDR 和 GND 之间的微小连线**，注意绝对不要切过头。
<img src="doc/mpr121_cut.png" width="40%">
MPR121 模块加上引脚的高度超过了 PCB 板的高度。所以你需要像下面的图片一样焊接模块。
首先贴上一些绝缘胶带。