Film Developing Bot for AP Dev Tanks

Hello Everybody,

this is just a quick and dirty design of a Film Development Bot, for use with AP Developing Tanks.
If you are into developing your own film, you probably know how tiresome it is to babysit your developing tank just to turn it every 30 seconds.
With this design, a cheap servo, microcontroller and a bit of electronics knowledge you can just sit back and have a cup of coffee, while your development bot does the rest.

I used a little leftover lipo battery for powering the el