非常感谢 小鹏 大佬开源的OttoRobot+小智AI项目，DIY及安装详情请查看大佬开源 主页 

外壳优化内容：

1、原舵机固定螺丝孔偏大，改小舵机安装更稳固；

2、头顶盖平整且天线不易打印易断，修改了头顶盖做了圆弧美化，天线也改为三角镂空形美观易打印且结实；

3、四肢部分的圆弧形孔悬垂打印不佳，修改为三角斜孔易打印并做了镂空装饰；

4、手与手臂的孔洞连接过松，对手的插接处缩短，可与手臂紧密插接；

5、增加了开关键和Boot键键帽，更美观易按。

Many thanks to  小鹏  for open - sourcing the OttoRobot + Xiaozhi AI project. For details of DIY and installation, please check the open - source 主页 of the big shot. 

Contents of shell optimization:

 1. The original servo fixing screw holes were too large. Making them smaller makes the servo installation more stable.

 2. The top cover was flat, and the antenna was not easy to print and prone to breakage. The top cover was modified with arc beautification, and the antenna was also changed to a triangular hollow shape, which is beautiful, easy to print, and sturdy. 

3. The circular holes in the limbs were not well - printed in overhang. They were changed to triangular slanted holes, which are easy to print and decorated with hollowing. 

4. The connection between the holes of the hand and the arm was too loose. The insertion part of the hand was shortened, so that it can be inserted tightly with the arm. 

5. The power - on key and Boot key caps were added, which are more beautiful and easy to press.