I've finally started using the Rumba I got from the indiegogo promotion. It's really a good piece of hardware, and I'm very satisfied with it. I like especially the ease of connection and configuration. However, since a couple of prints, the heated bed temperature just increases, and the last time it reached more than 100°C! (I set it to 60°C, since I'm printing PLA). I didn't manage to reduce it using the pronterface command to disable it, and as soon as I give power, the temperature of the heated bed rises.