3D printer hot end hub board Big Fish TT Big Fish CC

    This hot-end hub board is suitable for 3D printers such as the Dayu TT and Dayu CC, and can be fixed behind 36 or 42 stepper motors for easy wiring. It uses a D-Sub interface with bolt-on mounting for improved connection reliability.
    (20231101: Updated FFC cable version
    , referencing the Dayu CC 3D Printing Hub Board - JLCPCB EDA Open Source Hardware Platform (oshwhub.com) design, using a D-Sub interface with built-in bolt mounting. Wiring has been optimized to reduce size, and it can be used with 36 stepper motors.
    Includes interfaces:

heating rod,
two fans,
one thermistor,
X limiter,
Z limiter , and
stepper motor

    . The heating rod and fans share a common anode, while the X and Z limits share a common ground; pay attention to the silkscreen markings during use.
    The Z limiter uses a 3-pin interface for proximity switches or Klicky switches; the thermistor uses two separate pins for easy use with PT100.
    The heating rod uses KF128-3.5mm terminals for high current handling; the others use XH2.54 terminals.)
    For use, you can directly purchase 1-2m long D-Sub 15P (also called DB15) male-to-male cables; connect the two soldered boards together for use, no additional crimping is required.
    The mounting holes include both horizontal and angled options, facilitating the use of M3 copper pillars to fix horizontal 36 motors (such as HGX extruders, Big Fish TT, etc.) and angled 36 motors (such as the rear of Sherpa extruders, FZai extruders). Ensure the D-Sub connector faces upwards, as shown in the image.
[FZai extruder image] [
 
Big Fish TT image]
[PCB diagram]