Arduino Pro Mini board. We have programmed the LANC commands for Blackmagic Cameras, but with the Hirose USB you will be able to load all LANC commands for any LANC camera.
What we have now is Start/Stop under the thumb, autofocus to the right, then down the front, + value, - value and lastly under the ring finger, change mode. The mode trigger with toggle between, focus (blue), aperture (yellow), and zoom uses all three LED's. Slow zoom (green), medium zoom (green & yellow) and fast zoom (all three), and with the ability to program the SMART SPHERE any trigger can be assigned any task.
Lastly inspired by the stitches on a real baseball I notched the wood in front of the triggers so you can get a really good grip.