[JerrySexton]

I'm trying to help a friend with a machine he inherited. It has Hobby CNC 4AUPC Rev 1 board. I've searched the net over and can't find any documentation on it. Would anyone here happen to have a copy?

Any help would be much appreciated.

[john-100]

Hi Jerry

if no one has the documents you need then you may be able to piece together the information
from the stepper driver IC data sheets and later Hobbycnc boards like the hobby cnc EZ board

SLA7062M

Attachment 294334

HobbyCNC ez-M3 Schematic

Attachment 294336

note - the sla7078m ic's used in the HobbyCNC ez-M3 board have built in 0.155 ohm current sense resistors



so far I've only found a photo of a 4aupc board

Attachment 294338

the older SLA7062M ic requires two resistors on the pcb see R51 to R58 in the photo



John

[EAAguy]

Have you asked HobbyCNC for the documents?

I'm trying to help a friend with a machine he inherited. It has Hobby CNC 4AUPC Rev 1 board. I've searched the net over and can't find any documentation on it. Would anyone here happen to have a copy?

Any help would be much appreciated.

[dwwright]

I have a copy, was looking at them today. I can scan and post it tomorrow.

[EAAguy]

I KNOW HobbyCNC has the latest version of them for the asking. No need to post them here. Jerry hasn't been back on since his first post. I think he has his solution.

I have a copy, was looking at them today. I can scan and post it tomorrow.