There goes the 2nd target date for completing this, but progress is still in... progress. For the backpack power supply, I drilled and bolted a waterproof enclosure to some old armour. I had planned to wear the armour inside the robe with the pack outside, but now I'm wondering if it would be better to paint the armour and keep it on the outside. The weight of the battery tends to pull the back plate down quite a bit, and it might need some decoration behind the transparent panel, but otherwise I'm quite happy with how it's turned out. It should provide a usefull mounting point for other augmentations later on.
The arm is a little less complete, and there's a problem that I'm not sure how best to solve. The main gadget on this is the gripper tool, which is a simple pair of geared motors with a pincer on each. The problem is, this is mounted on the end of a telescoping pole that can extend to double or triple it's length, but still needs to be wired into the driver board at the back of the arm. If I just use a long cable, it'll hang down when the gripper is retracted causing a trip hazard. I'll look for a coiled wire, but if anyone has any other suggestions they would be appreciated.