This was my 5rd project. To get a portable Echo Dot, so I can stream music on my back porch.
This project had some choices and you can not loose, no matter which way you choose. To get this done you can choose a Alexa Voice Remote and use it to control your Echo Dot, or you can use a Battery for the Echo Dot and carry the Echo Dot/Battery around with you and give your commands where you are located.
If you want to look at the configuration presentation then you can use this link. Project 5 Config.
This project is a bit more dificult. If you are interested in what I did, just contact me.