Shaft diameter is 6.35 mm (1/4 inch) with flat side.
This 12 position rotary switch is designed for use with the BBI-32 USB controller and only requires two (2) wires to connect - unlike a regular switch which would require 13 wires.
Please note that currently this product is only supported by our BBI-32 controllers.
Connecting Rotary Switches:
Connect 11 BBI-32 rotary switches for a maximum of 132 inputs! Our BBI 12 position rotary switches connect with only two wires! Just solder two wires to the connectors on the bottom of the switch board, connect to the button input and let the controller do the rest of the work!
Switches only connect to buttons 1 through 11. Each switch receives 12 button inputs and moves the next switch to the next available set of 12. For example, a switch in position B1 will use inputs B1-12. If there was also a switch in position B2, it would use inputs B13-24. If the switch in position B1 was not connected and there was only switch B2, it would use inputs B2-14.
You can also connect other standard buttons to allocate 12 inputs to a switch for duplicating presses. For example, a switch in position B1 assigns inputs B1 to B12. A standard button connected in position B6 has the same effect as setting the rotary switch to position 6. If you do not want duplicate presses, you can change the initial assignment of the 12 rotary switch inputs in the BBI-32 configuration software, which is available in the download tab.