Open Source
Digital Ocean Dynamic Ip
A simple script in Go language to automatically update Digital ocean DNS records if you have a dynamic IP. Since it can be compiled on any platform, you can use it along with raspberrypi etc.
ECR KUBE HELPER
Smarty
Smarty is a simple home automation interface based on ESP8266(ESP-01) and Arduino framework. You can tweak platform settings to support other ESP8266 modules.