A 5 button hand controller that I used as a wireless controller.

It was redrawn in Onshape so you can copy and edit the files to suit yourself. https://cad.onshape.com/documents/73b2e99c57989e27f6939f01/w/5c3df88b3e875f22f6024dcf/e/3ad7c2d4a4ec4b6de6b6e7d7 (Except the button mold files, sorry).

It is designed for a 16x2 lcd with or without I2c. The buttons and pcb mounts are all on a 2.54mm(0.1") pcd for compatability with strip/vero boards. The buttons I used are: 6x6x5mm through hole, tactile, momentary switch. The DC power socket is a 2.1mm pcb mount power jack.

I have included button files that can be printed in TPU or molds that can be used for silicon buttons. Both methods work well.

I used an NRF24L01 and an arduino pro mini for this project but an esp8266 or Wemos D1 mini would work as well or better. The choices are endless.