Motor on a roller blind

** Update 2021-12-08: If you prefer to use esphome I've done an esphome variant of the code for improved integration to Home Assistant. Review the PIN assignments before uploading. Feel free to use it at your own risk (I don't provide support...) https://bit.ly/33q7OW6 **

# Please read the following note from the designer
- **I consider the build to be in an archived state. I will not do any changes to it nor the code and support is through the comments section - i.e. not via email or by messaging me**
- My set of roller blinds (5) are still running great since 2017. I have one, a bit irritating, bug with the native code and that is if there is a power loss. Check comments or repo forks for a solution
- The "thing" is a few years old and so is the repo (archived state). Some Arduino libraries used in the original code is out-of-date. I'd check the timestamp of the repo and use the version for each library that is relevant. E.g. my last commit was "9 Mar 2018" and that means that