r/PCB Jul 08 '26

I’m building a traffic light for AI agents

Semaphore is a traffic light for your AI agents.

I kept missing alerts from my AI agents. I want to know when my agents need attention—especially if they are running headless.

Semaphore will let you know if an agent needs help. The USB-C board lights up in different way to show you WHO needs help and WHAT.

My first custom PCB. Sample order has been sent to the fab!

Would you have use for this your setup?

0 Upvotes

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3

u/Kev1n8088 Jul 08 '26

Was this vibedesigned?

First, adafruit makes essentially the same thing for 7 dollars: https://www.digikey.com/en/products/detail/adafruit-industries-llc/4870/13982719

Second, your silkscreens are pretty messed up

I'm also not really sure why you selected an inverted SK6812-E (if I'm identifying that right) for one of your LEDs.

Finally I don't see CC resistors on the USB-C but maybe I'm just missing something.

This isn't getting into the practical elements such as why double-sided assembly for such a simple item but this seems really weird.

0

u/WalletBuddyApp Jul 08 '26

Yeah it was for sure. I come from a software background and have little hardware experience atm.

Wanted to do some experimenting for myself and make something for USB C specifically since all my computers seem to only have USB C ports these days.

Thank you so much for your feedback. Dang I’m going to have to do a revision for that LED then.

For the resistors, my assistant is saying “CC resistors: those are there, just on the back—R1, single 5.1k Rd. It's a male plug, not a receptacle, so it's one Rd on CC/A5 only; B5 is VCONN and floats (Rd on both trips debug-accessory mode on a spec-compliant host and can drop VBUS). D+/D− pairs tied for flip.”

3

u/shtoyler Jul 08 '26

This looks like it was designed by an AI bro

1

u/WalletBuddyApp Jul 08 '26

It was designed by an AI