Imagine our surprise when this article on Ecobot III and the disgusting video above showed up in our feed. The robot can theoretically be self-sustaining forever, so long as it has a food source. Yes, you read correctly, food.
Typical robots relying on grub burn the biomass to produce heat/steam/energy, but Ecobot III actually digests using Microbial Fuel Cells and extracts energy in the form of hydrogen.
The process isn’t very efficient (yet), and of course waste must be excreted, but we’re inching closer and closer to the day our robot overlords are invincible. The project has come to a halt (we can’t imagine why), but you can still read up on the process, and meet Ecobot’s brothers: II and I.
When faced with having 2 cats with different dietary needs, [Landmanr] had to decide between manually stopping the cat on a diet from eating normal food, or building a dietary robot overlord. [Landmanr] chose the robot route. Using an old cd rom for the opening/closing mechanism, and RFID to distinguish between felines, [Landmanr] no longer has to stand guard while each cat eats. We particularly like the design of the antenna, so that the cat has to stick its head through it to activate the food opening. You don’t see that version in the video, but it is in the instructable.
This musical Lazy Susan, or “Crazy Adam” was brought to us by students from MIT. It basically plays [Soul II Soul]‘s “Back to Life” as it turns. In their words: “Through the interaction with the Singing Lazy Susan, we found the eating patterns and behaviors unique to each person, which reflect our personalities and interests. The dining experience expands to a new domain.” Are we the only ones who think this is silly? Not only is an Arduino overkill for this, how does this help reflect our personalities and interests? We know, someone will say that art doesn’t need to make sense, but this would just get annoying really fast. Good job coming up with an idea and making it happen. Please don’t bring that to our next office party. It is also worth noting that musical Lazy Susans aren’t exactly a new idea.
Reader, [Andres Leon], has two adorable cats with very specific dietary needs. Instead of altering his schedule, he donned his hacking hat and designed a very solid cat food dispenser. The dispenser consists of a rotating drum with a slot in it and a PVC pipe Y-fitting to distribute the food evenly. The brains of the machine is an Arduino Deumillanove and an XBee module. The unit can be controlled by a web interface or it can run completely standalone. [Andres] ran into a problem where the drum’s resistance to turning varied based on how much food was inside. He solved this with a clever laser position indicator. A piece of plywood is lined up with the slot at the top so that whenever the slot is facing up it keeps the laser from shining on a photoresistor. The cats were afraid of the servo noise at first, but now they run to their bowls whenever they hear it.
