anonymous asks: how do your attachments work? how do you control them? can you feel through them? pebble answers, nervously, blushing: i can feel through the bottom of the hoof! i have no ide about the other parts though. below is a diagram of the internals of one of pebble's arms, showing a vacuum socket, nerve electrodes, motion arrays, pressure & temperature sensor at the underside of the hoof, a computer board, lithium ion cells and a shock protector at the elbow. it's all very detailed.