# a stepper driver using the f1c100s linux

Channel: #designreview
Source: https://discord.com/channels/1233487248129921135/1555088644539424828
Started: 2026-10-01T05:28:02.923000+00:00
Last activity: 2026-10-01T05:35:42.475000+00:00

## shibo — 2026-10-01T05:27:05.008000+00:00

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
Attachment: Screenshot_2026-10-01_at_7.26.44_AM.png — https://community.tscircuit.com/media/1555088644203749466

## Seve — 2026-10-01T05:28:03.760000+00:00

for NEMA8 steppers, we'll buy from steppers online

## Seve — 2026-10-01T05:28:09.064000+00:00

they are standard anyway

## Seve — 2026-10-01T05:28:49.439000+00:00

also remove the empty space on the board AND USE USB PD

## Seve — 2026-10-01T05:29:14.736000+00:00

why is i2c and SPI exposed?

## Seve — 2026-10-01T05:29:19.621000+00:00

how do you chat with the controller

## Seve — 2026-10-01T05:29:39.268000+00:00

there is no ethernet (the main reason to have linux?)

## Seve — 2026-10-01T05:32:23.779000+00:00

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 — 2026-10-01T05:32:56.458000+00:00

put "nema17" or whatever in the name of your package so that we know what it's supposed to go onto

## Seve — 2026-10-01T05:35:31.965000+00:00

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 — 2026-10-01T05:35:42.475000+00:00

(very common safety thing)