Electronics are contained in box at back waist containing arduino uno, 2 nine volt batteries, and small amp. Speakers are in ends of tube around neck and mic is on an earpiece. Arduino board powers eye stalk and dome lights as well as handles dalek voice modulation. I found the arduino sketch (source and circuit diagrams) can be found here, kudos to Andy Grove for the sketch. Originally created for my wife (the only dalek I will ever love) for the Time Traveler's Ball held at the Redmoor in Cincinnati 11/17/12Photo Link. (Shared in the BB Flickr Pool)
I blogged "Extermiknit!", a knittable Dalek, back in 2007, but it turns out that an even cooler knittable Dalek of the same name was created on Feather and Fan in 2010, with an opening hatch containing a Kaled mutant, and here it is.
After completing the top of the Dalek as specified, I created an opening in the front by steeking carefully along the vertical line between the knit “instrument panel” and the purled rest of the midsection–just used some sewing shears and cut straight through the middle of the rightmost line of knit stitches, along the entire height of the midsection. I then carefully unraveled the stitches from right to left on the rows above and below the desired door area, to the left end of the “instrument panel”, and placed these two horizontal pairs of exposed stitches on DPNs.
This creates a kind of door flap, hinged vertically along the left-hand side. I sewed down the outer edge of the door with one yarn tail, and used a sewn bindoff and the other two yarn tails to fasten the top and bottom of the door flap. The door flap was now bound off and would not unravel.