Its great to be part of this discussion and Relayer , you have a very good job. Sorry no Russian language. Since this project is all about incorporation of ideas, I want to suggest a possible consideration. Can this project include a Nextion display? Basically all the graphics can be handled by the Nextion. Communication between the Nextion Display and the Nano can be using CAT protocol. I guess, you will save a lot of space on the Nano to add more features to it. Thank you.