Carbide3D VFD control protocol?

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Hi, would it be possible for the C3D team to describe what the spinderella board is doing to the speed signal from the C3D controller (and what the format of those signals are)?

I am trying to use a C3D spindle/VFD with a different controller, and am unclear if I should keep the spinderella in line on the control signal or not. I can bypass it if I have to, but am curious what problems C3D is solving with the signal processing part of the spinderella, aside from adding the override tool change soft power button.

It looks like the C3D controller is outputting an active low PWM signal, and the C3D spinderella is converting it to an ~8kHz +5VDC active high PWM to send to the VFD. Am I understanding this correctly?

Thanks for considering!

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What is a spinderella?

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That is the name of our board for the spindle on a Nomad.

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I just tapped into the ground and pwm ports on the main board. I made a connector that plugs in just above the spindle board plug. It’s my vfd only accepts 0-10v for some reason so I just got a pwm to 0-10v converter off Amazon. Works very well.

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Ended up bypassing the Spinderella as that seems much more compatible going forward. Thanks all!

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