Request a Drink (IoT Push Button)

I made an IoT Push Button (Think of those Amazon Dash things) that you can use to request drink refills when relaxing in the garden, provided your other half is making the drinks of course!
This project uses a D1 Mini micro-controller and should run for months on a single battery. A 3D-printable housing is used to complete the project.
Further details available via Instructables: www.instructab...
You will need:
D1 Mini
(www.banggood.c...)
3.7 Li-ion 14500 battery
(www.banggood.c...)
AA style Battery Holder (www.banggood.c...)
Push Button and cap (www.banggood.c...)
3D-Printable housing available via Thingiverse (www.thingivers...)
Some short lengths of wire and a glue gun to fix