This is a dual filament runout sensor adapter board for printer controller boards without 2x 3 pin sensor ports. It is shipped in a kit that requires minimal soldering to assemble the pictured finished adapter board with mounted headers and resistors.

The kit includes:

• 1x dual filament runout sensor adapter board
• 1x XH-A 2.54mm 4 Pin Connector Header
• 1x XH-A 2.54mm 4 Pin Connector Receptacle
• 4x XH-A Connector Crimp Socket
• 2x XH-A 2.54mm 3 Pin Header
• 2x 47kΩ resistors

This adapter reduces wire clutter and soldering by combining 2 pins on each of the 4 pin sensor wires so that one 5V and one GND pin are required on the printer controller board instead of two 5V and two GND pins. I originally created this adapter to more cleanly connect 2 filament runout sensors to the Ultimainboard v2.x.x used in the Ultimaker Original+ and Ultimaker 2/2+.

This adapter board is made for filament runout sensors with 3 pins (5V,GND,SIG) and can be used with any printer controller board that has 5V, GND, and 2 input pins available.