I was wanting to add a rechargable battery to my raspberry pi. How would I do this? My second question is, is it safe to power the pi using a rechargable battery. When I use my pi for a while and it then gets quite warm. My project makes the pi more portable so the user will obviously put it in thei...

I have a project that needs speech recognition. An example of what it could do would be: If the user Says "Display a picture of a cake" or "Send a message to Bob" the program will read the command and do as the user says. I've seen that there are some libraries in python for this but some of them ar...