@silverpoint Simply plugging something into it doesn't "use" it, they are topically used for heaters. So you'd need to use gcode to switch it on.
I would power the tool board directly from the PSU. Because you want 6HC and toolbars to power at the same time.
@silverpoint Can you post your config as text and not a link please.
Also those outputs are switched so they wouldn't have voltage unless you are trying to use them.
@jjude What happens if you click the Home All button?
@skezo Depending on the size of the linear rail you could look at a Voron toolhead.
@rmilyard So none of the T1 and T3 fans work? Not even hotend fan.
@Borgtribble Change the S value of the M569 command for the extruder. (S0 or S1)
Can you plug a working tools part cooling fan into the port of a non working fan on the control board side. This would see if the mosfet on the control boards are an issue.
There is a 3rd party PrusaSlicer post processor for this if your interested?
Probably worth mentioning all the steps taken from the discussion from the E3D discord.
Such as, replacing fans and that the fans do work on the other tools, but as far as I'm aware you were testing if a metal washer between the fan and motor fixes the issue as experienced by other users. Or simply moving the fan 6-8" away from the Hemera and testing again.
@Herve_Smith personally I have had nothing but positive communication with him via Instagram but than I'm not so arrogant to question someone's project.
I've only made a few project type YouTube videos and the amount of people who think they can tell you how to do things is annoying.
The amount of planning and costs that must go into a project like this I'm sure he just wanted to follow his own plans.
@Phaedrux Yes a Voron Z endstop is at Z0 the top of Z travel.
@tecno Did you use the config tool to create the config.g? Because if you did how did you select driver 4?
Where is driver 4 is up in your config.g I see P0-3 but you have 4 in the M584?
@tecno I think you drive numbering in config.g is wrong you have Z4 but should that be Z3?
M569 P0 S1 ; physical drive 0 goes forwards using default driver timings
M569 P1 S1 ; physical drive 1 goes forwards using default driver timings
M569 P2 S1 ; physical drive 2 goes forwards using default driver timings
M569 P3 S0 ; physical drive 3 goes backwards using default driver timings
M584 X0 Y1 Z4 E2
@tecno After homing what value does the DWC show for Z?
@tecno Your homing files are setting the Z to 120. That could be the issue.
@T3P3Tony I've also been following this, really fascinating build.
Can't wait until he attempts the life size benchy.
@spllg I have an earlier version and haven't killed any Pi's.
@alankilian They don't it's made by Slicer engineering in the US.
@Dizzwold Not holding it against you at all. Just mention it next time as it may lead the help/advice a different route. Technically there isn't a clone Hemera just similar looking products.
Glad it's working now.