——————————— updated on Oct 28 ;-)————————————

Received the ordered materials
about soldering
https://www.youtube.com/watch?v=Qps9woUGkvI

screenshot from the video
will practice it tonight or tomorrow’s night
tonight!
soldering at lab…

the touch points are so tiny which makes it extremely difficult😇

This spends me the whole night.

Finally done!

BUT!!!
With my code, it doesn’t work!!!!😭
I’ll check with multimeter in Wednesday🥲