howdy gang, so I’m a bit at a loss right now. Got my c3d-mini hooked up, got first moves and the end stops working from what I’ve done so far. The main issue right now is the the bed and hot-end are not heating up. Thermistors seem to be working, since they are changing and everything seems to be connected properly. I verified the wires are not broken. Could it be a bad board?

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“Carlos Porto”

Gregor March 26, 2018 08:09

Hello, you also have to power the FET-IN.

Nothing else works.

So connect VIN and FET-IN to your power source.

Then it should work.

Ray Kholodovsky (Cohesion3D) March 26, 2018 11:44

Yes.

I also question why you have the white endstop wires plugged into XMX and YMX when X Min and Y Min are available and those are protected

Griffin Paquette March 26, 2018 14:04

Gotta apply power to the leftmost screw terminals on that row. I would also move the endstops over otherwise you will have to reconfigure in config.

Carlos Porto March 26, 2018 14:23

Thanks for the info. I didn’t realize it needed to be powered. Out of curiosity, why does it need additional power connection. Mind you I’m more of a layman then an electrical engineer.

Griffin Paquette March 26, 2018 14:46

Having the separate input allows you to run either different voltages and/or more current through the mosfets. If you only used one screw terminal for the whole board, you would be limited to how much power can go through those mosfets without melting the input terminal.

Carlos Porto March 26, 2018 16:20

That’s genius! Previous boards I’ve used where never like this. So this is a great solution. And I can confirm I’ve got heat working :)

Carlos Porto March 26, 2018 17:08

So my second question as Ray previously pointed out, was about the end stops. when they are plugged into the X-min and Ymin it is always being reported as on when I do a M119 command. When I have it connected to the X/Ymax it works properly. I’m thinking it’s something to do with the configuration? This is what I have below which is default setup:

endstops_enable true

delta_homing true

alpha_min_endstop nc!

alpha_max_endstop 1.25^

alpha_homing_direction home_to_max

alpha_max 0

beta_min_endstop nc

beta_max_endstop 1.27^

beta_homing_direction home_to_max

beta_max 0

gamma_min_endstop nc

gamma_max_endstop 1.29^

gamma_homing_direction home_to_max

gamma_max 333.8

alpha_max_travel 1000

beta_max_travel 1000

gamma_max_travel 1000

Ray Kholodovsky (Cohesion3D) March 26, 2018 18:15

The aforementioned protection inverts the logic. Add ! to flip.

Don’t say nc! just nc

Carlos Porto March 26, 2018 20:07

Sorry about that, it was a mistype on my part. After reading documentation on smoothie for endstops, seems it needed to be a pull-down and reversed. Go figure, it’s been a pull up on the previous board. Anyway, looks like should be good to go from here.

Carlos Porto March 27, 2018 01:54

And thanks again guys, finally got this beast printing again.

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