Waiting could be sometime a good thing when designing something.
Like the iRis project I started years ago.
Even if I never posted recent articles about iRis, I did reach a nice stage of development, involving 3D printing design, electronic development and firmware development on different platforms.
The purpose of the iRis project is to have a "head" for medical training purpose related to eyes illness.
Basically the idea is to build a "eyes simulator" capable to react to the light like an eye does, in order to simulate different types of illness retina/nerve related.