i thought I would share some (poor) photos of the frame coming together.

I've added an idler pulley to take up a little slack and increase the angle of contact on the driving cog.

On the electrical side i'm planning on bypassing the FIFO and using an atmega to generate signals, and cutout the raspberry pi zero. This is because I know that the current design iteration is not up to the job, but will be useful for running experiments that will allow development to continue. I'm more familiar with AVR for programming so that will make setting up data logging etc. for tests easier.

I'm also considering ways to get funds to allow faster development time. Where I am at the moment, I don't think there is scope for the likes of kickstarter as its not yet at the functional prototype stage. Patreon may be an option, but I have only glanced at their site. Any thoughts and comments welcome.

Edit - Put the casing plates together; it's nice when tolerance gaps work correctly.