I’ve decided on what interfaces the Pi-Dalek will mounted on the rear of the case.
- USB-B socket to accept power for charging the internal battery (a mobile phone emergency charger. Internally the socket offers a USB-A socket which is connected to the Pi with a short USB-A-to-microUSB-B cable, then the emergency charger, then another short USB-A-to-microUSB-B cable.
- USB-A socket for memory sticks etc. Connected to the UTG socket with a short UTG cable.
- HDMI socket. Connected to the miniHDMI socket on the Pi with a short adapter cable.
These will be mounted on the arse-end of the Dalek. Two on the 3rd row up of the Dalek-bumps on the rear panel (both USB ports), with the HDMI socket on one of the rear flank quarters (3rd row up).
Ideally I’d like them all on the back, but the bumps on row 1 are blocked by the motor housing, while rows 2 and 4 have far too many structual bits behind it.
This still leaves me with the issue of mounting the camera. While I’d love to have the camera mounted to the eyestalk, this is impractical. Mainly as the eyestalk is missing, but also because the camera module is a huge square blob that wouldn’t look right.
The best I can hope is to mount the camera on the Glacis, between the Whisk and Plunger, just above the top of the skirt. It will still mean that some cutting will have to be done, but it will probably not look as awful.
I’ve also decided that instead of mounting the Pi and Motozero directly to the base chassis, I’ll mount them upside down hanging from the internal ceiling at the top of the skirt. This shortens the distance to where I want the camera to be, and means only 6 wires need to be run down to the base (motor power +/-, motor left +/- and motor right +/-). Everything else will be skirt mounted. So the 40pin GPIO header connection twixt Pi and Motozero forms the split in the arrangement.
A sort of split between the head and body, if you want to make up some sort of analogy up.
I’m sure there’ll be some photos of it when its done.