Last post i listed 3 tasks remaining..

1. Build a PSU.
2. Make casing and/or mounts for all the circuits.
3. Software.

Then project updates went silent, the good news now is, these 3 tasks have been accomplished. I built the PSU, connected all PCB's together. Debugged the software and hardware. Lots of testing of the hardware and software have been done, hit a few roadblocks but managed to get around them. And learned a few things along the way. Kinda buzzed out right now, but I will try and make a complete list of my major learning experiences:

1. Somewhere along the line I decided to drop the ICSP. Fail!
2. Make sure your battery is disconnected from Vcc when you try to charge it. (RIP one attiny84)
3. 4xAA Ni-MH through a diode driving a big 4 Volt stepper is not enough. Next time this thing runs off a 12 Volts backupsourcebattery.
4. Interrupt pins are not messing around a lot. They do stuff when stuff happens. Have total control over what happens.
5. Don't start out a project with a maxed out I/O pincount, you will probably need more pins for stuff that shows up along the way(and you might want to add an LCD). If I were to choose a chip now I would have used an Atmega8.
6. Make sure your mechanics are sturdy. In this project I ended up mounting stuff vertically and some flimsy parts did not like that. (then again I'm too lazy to make a new part :P). This problem however is a combination of mechanics and too low voltage battery backup.

Anyways, a few weeks back my phone died, hence no photos and I'm too lazy to go downstairs and grabbing my DSLR.

Status quo right now is the project is pretty damn near done. Almost everything is mounted in the box and tested working, with a few software modifications. The transformer rectified and capped with a 10kµF puts out about 8 volts which is perfect. Running the stepper off bad batteries is a bit iffy(missing steps). but solved through software.

Anyway, stay tuned for more photos, videos and updated.