CAN bus boards, Wiring the Tool Board

Commissioning

Wiring Euclid Probe to a remote toolboard requires coordination with the controller manual and related device schematics.

Tip: The most direct method of wiring Euclid Probe is connecting it to an endstop connector.

CAN type controllers can provide 3.3V or 5v on their I/O ports. Look to use an endstop port.
Early high-voltage break-out boards made use of a BAT85 diode which acted as a current limiter on the probe circuit. Depending on the wiring method, you may or may not need that diode.
Some controllers utilize an optocouplers on the controller. Not all optocouplers can sink enough current to illuminate / turn off the Euclid LED’s.

Tip: Users are strongly advised to verify the operation of the I/O pins of the CAN BUS baords. We have been getting feedback that not all available pins are Input/Output, some are Output only. We have started to annotate the ones that we have gotten reports on.

Huvud CAN BUS Boards

The HUVUD toolboard is designed to simplify wiring and configuration for extruders on klipper-based machines, particularily useful for toolchangers or extra large machines, but provides advantages for even the smallest of machines. Huvud’s can be found at resellers like LukesLabonline.com and Fabreeko.com.