这里post一下中间用到的材料工具，基本都是在亚马逊买的。
Recessed light 吸顶灯：https://www.amazon.com/gp/product/B07Z66ND65/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
6 inch hole saw 6寸圆洞锯: https://www.amazon.com/gp/product/B07CGQ1B4B/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Dust Bowl 接灰的罩：https://www.amazon.com/gp/product/B00ESWJU5W/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Tp-Link Kasa dimmable switch：https://www.amazon.com/gp/product/B07HGSCXB6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
long drill bit 长钻头(72 inch)：https://www.amazon.com/gp/product/B00IP87QHO/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
电线用的是home depot 14 gauge的