Head sensor mountings and getting back into it

A project log for K-9

Raspberry Pi powered K-9 GUV with a NES controller style remote

Andrew BillsAndrew Bills 06/30/2016 at 02:030 Comments

Long time between drinks, I took a little bit of a break after being up every night past 2 am for that ComicCon thing, then I was waiting for the right size mounting screws and then the weather has been a bit horrible... but last week there was a rare not freezing cold day so I thought Id make a dash for it and try and cut the holes in the head for mounting. I was a little worried about it cracking, seeing how its signed now, but it was just warm enough and I was careful enough that it didn't happen.

I had some challenges finding a drill bit for the ultrasonics (a single drill bit was $80!) but found this hobby drill bit that is a cone with notches to increase the size of holes.

Anyway as you can see there is some electronics now mounted in the head ready for me to hook up to the wiring I have done. Running through...

The only thing I didn't manage to mount is the on off/kill switch which I also intend to put in the head under the chin where it is not visible but easy to get to in case K9 decides to make a break for it. Obviously not intended for safe shut downs (at this stage) more for 'holey crap turn it off turn it off!'. I also like the idea of ensuring the cables for the 24v have an end point which is mounted in plastic and not with the metal frame. Most of the electronics are in perspex 'sandwiches' to protect it from being touched as well as isolate it from the frame.

That is as far as I have gotten since the last update. I want to try and get the top panel done next with the buttons and battery gauges but do need to make sure its all enclosed as it would be enough to have a nasty accident if grabbed wrong. Anyway that's where I'm at. Hopefully I have it more together over the next 2 months before the next ComicCon type event,then its all about improvements on the software side.