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, control your central heating, turn on/off your lights and much more!

https://www.youtube.com/watch?v=xiaiToQErd4

This project uses a D1 Mini micro-controller and should run for months on a single battery using the deep sleep feature.

You will need:

D1 Mini (https://www.banggood.com/custlink/3v33H1lji3)

3.7 Li-ion 14500 battery (https://www.banggood.com/custlink/Gv3vPToo9Y)

AA style Battery Holder (https://www.banggood.com/custlink/DKvDHTOOIt)

Push Button and cap (https://www.banggood.com/custlink/3KvDFuajZC)

3D-Printable housing Some short lengths of wire and a glue gun to fix

See my website http://www.cabuu.com for more details and for more projects like this.

Full details also available at instructables https://www.instructables.com/id/Request-a-Drink-IoT-Push-Button/.

Please also consider subscribing to my YouTube channel (https://www.youtube.com/channel/UCbz3gaHQNTVA7v-vpaXF13g).