A Mellow combination for Klipper projects with mainboard motion control and CAN electronics on the toolhead. It includes a FLY C8Pro with H618 host, M2WE/eMMC and Wi-Fi, six FLY TMC2209 drivers with heatsinks and one FLY SHT36 V3 Plus. The toolboard has its own extruder TMC2209, a LIS2DW accelerometer and a MAX31865 circuit for compatible RTD sensors.

This layout allocates the six C8Pro drivers to X, Y and four Z motors, while the SHT36 controls the extruder, making it useful for Voron 2.4-style CoreXY projects. The supplied SHT36 includes its approximately 1.5 m XT30 cable, loose connectors and USB cable. Toolhead mounting, sensors and configuration must be adapted to each machine.

With suitable firmware, the C8Pro can act as a USB–CAN bridge without necessarily adding a separate USB–CAN adapter. Power the SHT36 at 12–24 V through its appropriate input: do not use the C8Pro CAN connector's 5 V pin for this purpose. Check CAN-H/CAN-L, the ground reference, a common bus speed and termination at the two ends. This is not a universal preconfigured kit or a complete printer.