Hi, your pictures did not take to your post, use the Additonal Options below the editng box and attach the files for us thanks.
Hope to be of help, a picture of your project would be great and a circuit diag, either a CAD or picture of hand drawn circuit would be fine, in jpg, png or pdf.
Hope we can help. These are sort of project we like doing as it is helping yourself and your sage and by the looks of your code you have a good grasp on making it in modules to keep the debugging easy.
Tom..... 