End cap which one can slide a ESP8266 (In my case Wemos D1) into.
Onshape file for anyone needing to do any modifications.
https://cad.onshape.com/documents/0928a5d68a653b33b938408e/w/9bb33e10be7cf0abb778e324/e/cae2cc428191fbe6eb5dc0ae