cmcgrath5035

I’ll add that bonding all the machine metal together an then to ground is probably unnecessary. but if you choose to do it, connecting to the power supply earth (green wire in line cord) is probably best, or to the DC negative at the power supply output, but not both.

Transformerless AC to DC power supplies typically do not have a direct connection between the + and – outputs to that earth AC input.

BentCookie

Interesting question, the Wiki reference posted by Zootalaws does reference, in logic space, homing actions for all 6 available axis assignments for a four motor tinyG, I believe it is also a correct statement that the X,Y,Z and A axis Min/Max switch ports are assigned in the base code to those specific axis functions and not reassignable. Thus there are no connections available to feed the homing logic when homing a B or C axis.

I am not a developer, but a quick look at https://github.com/synthetos/TinyG/blob/master/firmware/tinyg/switch.h indicates to me that tinyG FW as built for the tinyG hardware only builds support for 4 Min and 4 Max switches, X,Y,Z and A.

It is likely that rework of various header files and recompiling tinyG could attach the physical I/O ports to B and C axis homing logic.
How to get there is beyond my pay grade, so I have asked a developer to have a look here and comment.

Try Contact Us again, Riley fixed it.

I am using the screw terminals with the standard 4 wire connectors that come with stepper motors. If the connectors were the issue then I believe it would have had the same issue when operating on the Zaxis, would it not?

Generally speaking, I would agree with your statement. It s rather easy to fracture the very fine wires connecting most steppers. It is also easy to clamp down on the insulation , rather than the wire, when inserting using the screw terminals.

I converted to using ferrules for steppers a long while back

I would be suspicious of wiring, specifically the fine wire connections between stepper motor and whatever connector system you are using (“I decided to plug it into the Z axis…..”).

Driver devices do fail, but not frequently and usually due to overheating.
Does not sound like that should be an issue.

I am assuming this is a Zaxis that moves a spindle of sorts up and down.

double check you four leads, if only one of the two windings is energized, it will make noise (want to move) but won’t.
Can you manually spin the de energized motor and make the axis go smoothly up and down?

There is no separate G2core forum yet
There is substantial activity at the more detailed level at https://github.com/synthetos/g2/issues

For tmc stepper possibilities, give this item a look
https://www.instructables.com/id/Upgrading-RAMPS-14-With-TMC2130-Stepper-Drivers/

Previous RAMPS boards worked with early versions of G2 running on Due, I have not seen any recent activity but it should be possible with some rerouting of logic connections.

• This reply was modified 5 years, 2 months ago by cmcgrath5035.

By appearances, those should work if appropriately attached. Use shielded twisted pair to connect to TinyG.
Have you reviewed this Wiki item ?