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# designreview·Active

a stepper driver using the f1c100s linux

a stepper driver using the f1c100s linux chip: https://tscircuit.com/shibosoftwaredev/f1c100s linux stepper controller 3d for the nema 8 stepper motor: https://www.moonsindustries.com/p/nema 08 standard hybrid stepper motors/ms08hy1p4050 000004611110028700

Started by shiboOct 1, 202620 messages

Discussion

Last active 9 days ago · plain text
shibooriginal post
a stepper driver using the f1c100s linux chip: https://tscircuit.com/shibosoftwaredev/f1c100s-linux-stepper-controller#3d for the nema 8 stepper motor: https://www.moonsindustries.com/p/nema-08-standard-hybrid-stepper-motors/ms08hy1p4050-000004611110028700
Screenshot_2026-10-01_at_7.26.44_AM.pngScreenshot_2026-10-01_at_7.26.44_AM.png
Seve
for NEMA8 steppers, we'll buy from steppers online
Seve
they are standard anyway
Seve
also remove the empty space on the board AND USE USB PD
Seve
why is i2c and SPI exposed?
Seve
how do you chat with the controller
Seve
there is no ethernet (the main reason to have linux?)
Seve
it's an interesting idea to have them exposed to allow connecting a display but not at the cost of a massive amount of board space
Seve
put "nema17" or whatever in the name of your package so that we know what it's supposed to go onto
Seve
we probably need a separate small cpu that is programmed by the F1C100S to handle the motor driver commands, otherwise if the linux system stalls the motor will stall and have issues
Seve
(very common safety thing)
shibo
is the spacing good? it would be hard to make it more compact but I can try
Seve
I think you might be confused or mixing projects, it has to fit onto the back of a nema8 if its for a nema8 motor, the size is not allowed to be that big If u are doing an ethernet controlled driver you can also try to target nema17, but in either case you cannot change the board size
Seve
Nema8 still needs to have usb controlled driver, i think you are mixing two projects
shibo
usually the board doesn't have to fit on the back of the motor right? but we're choosing to make it fit right?
Seve
Normally they dont
shibo
ok I'll try to make it fit on the back of another motor then
Seve
Nema17
Seve
Double sided probably

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