LED camp lamp

Arduino mini
https://detail.tmall.com/item.htm?id=527292766480&ali_refid=a3_430583_1006:1110452247:N:pro%20mini%20328:fbde9a670acba58534ab4566928cfb0f&ali_trackid=1_fbde9a670acba58534ab4566928cfb0f&spm=a230r.1.14.1.ZHgcwB

Battery charger
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.ly2j7B&id=530655685650&_u=f27f148ga256

DC dack
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.Ux0baR&id=531601744939&_u=f27f148gb5e6

Battery
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.Ux0baR&id=520061247412&_u=f27f148g1334

heat sink
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.Ux0baR&id=35729101108&_u=f27f148g1d65

heat sink glue
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.Ux0baR&id=35728858430&_u=f27f148gce57

Battery box
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.Ux0baR&id=531643288672&_u=f27f148g2300

Power switch
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.Ux0baR&id=178523267&_u=f27f148gceed

Digital Encoder
https://item.taobao.com/item.htm?spm