# @Rishabh https://tscircuit.com/

Channel: #designreview
Source: https://discord.com/channels/1233487248129921135/1555660451323322559
Started: 2026-10-02T19:19:41.578000+00:00
Last activity: 2026-10-02T19:31:42.375000+00:00

## shibo — 2026-10-02T19:19:14.369000+00:00

<@809856037376491570> https://tscircuit.com/ShiboSoftwareDev/nema8-20mm-dual-usbc-stepper-controller#3d

## shibo — 2026-10-02T19:19:42.712000+00:00

20x20mm nema8 board
Attachment: Screenshot_2026-10-02_at_9.19.32_PM.png — https://community.tscircuit.com/media/1555660569628114954

## Seve — 2026-10-02T19:20:25.573000+00:00

make sure the PWR and DATA is clearly marked in silkscreen if possible, also ideally 4 mounting holes

## Seve — 2026-10-02T19:21:00.571000+00:00

you should really try to get the driver on the top haha

## shibo — 2026-10-02T19:21:25.788000+00:00

i'll try yeah, just wanting to get an initial review

## Seve — 2026-10-02T19:21:30.157000+00:00

you can also use an edge-facing JST, might save space not sure

## Seve — 2026-10-02T19:22:12.663000+00:00

well the board is 6 layers

## Seve — 2026-10-02T19:22:17.375000+00:00

and it has to be 4

## Seve — 2026-10-02T19:22:31.927000+00:00

actually it's 8 layers

## Seve — 2026-10-02T19:23:24.351000+00:00

idk how you didn't see that tbh lol

## Seve — 2026-10-02T19:23:32.792000+00:00

people aren't doing self review haha

## shibo — 2026-10-02T19:23:34.737000+00:00

I didn't know we had a 4 layer limit

## Seve — 2026-10-02T19:23:43.693000+00:00

upload it to jlc and check the cost

## Seve — 2026-10-02T19:23:57.019000+00:00

if the cost is ok maybe we can do 8 layer but it's probably not

## shibo — 2026-10-02T19:25:18.915000+00:00

yeah 8 layers is 90 dollars extra off the bat, pre tax and all

## Seve — 2026-10-02T19:25:34.772000+00:00

that is a bit high

## Seve — 2026-10-02T19:25:56.586000+00:00

i think you might be able to find a usb-c connector that uses less space

## Seve — 2026-10-02T19:27:29.407000+00:00

one type of connector that uses a lot less space is a vertically mounted connector, they are less secure though, probably not the right fit for this

## Seve — 2026-10-02T19:28:46.730000+00:00

ideally usb-c ports on same side

## Seve — 2026-10-02T19:30:44.395000+00:00

how you secure a vertically mounted connector is you make an enclosure that can help hold them. So it is possible to use a vertical usb-c connector for this, the enclosure isn't that hard to design

## shibo — 2026-10-02T19:31:42.375000+00:00

i'll make this my last option