[Solution] Switching between internal and external speakers on Amazon Echo

This is a pretty simple modification of an Amazon Echo, to eliminate one of the most annoying limitations of the Echo. You can also connect the relay to a microcontroller or just a Wifi socket, and thereby be able to tell Alexa what Speaker is supposed to be active. Pls don't try this without any experience. I'm not taking any responsibility for warranty voids or Hardware defects.