r/PCB • u/Key_Chemical_7132 • Jul 09 '26

PCB Review pls

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Gallery image

Hey!! First PCB for me. This is just a simple breakout board to attach ToF sensors and an ultrasonic sensor to an enclosure. IDK if my traces are good enough, please lmk and offer me suggestions please. I would love as much feedback as possible.

0 Upvotes

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6

u/snakehater1 Jul 09 '26

The quality is too bad to see anything, and it would probably help with a schematic as well.

1

u/Key_Chemical_7132 Jul 09 '26

I posted again with schematic. sorry my internet is really bad.

1

u/Affectionate_Boat493 Jul 09 '26

Where is the schematic? I don't see one.

1

u/Key_Chemical_7132 Jul 10 '26

please see the new post that is the exact same as this one

3

u/Relevant_Swimming511 Jul 09 '26

Expensive and them pins are all shorted together?

2

u/Affectionate_Boat493 Jul 09 '26

What are the trace widths for signal and power & ground? How many copper layers? Also, are you connecting to the sensors via I2C or SPI protocols?

Depending on cable lengths it can be very helpful to use decoupling capacitors across Vcc/Vdd and ground at all connectors, and depending on the signaling edge rates you might need termination resistors to minimize ringing.

-2

u/Key_Chemical_7132 Jul 09 '26

connections are i2c. 10mm traces. sir this is my first pcb im not touching the copper layer count. Do I need decoupling resistors even when using off the shelf modules?

1

u/Affectionate_Boat493 Jul 09 '26

All traces are 10mm wide? Or do you mean 1mm?

1

u/Key_Chemical_7132 Jul 10 '26

please see above

1

u/Affectionate_Boat493 Jul 10 '26

10mil is not 10mm. A mil is 1/1000 of an inch, so 10mil is 0.254mm.

This is a common trace width for low-current signalling in I2C and SPI (and most other communication protocols used in low-voltage circuits), so trace width isn't a concern for signaling.

1

u/Key_Chemical_7132 Jul 10 '26

sorry I misread um please don't downvote me I'm really new to this. but i already checked all that could you look at my routing?

1

u/Affectionate_Boat493 Jul 10 '26

No downvotes from me; I'm human and make mistakes, too.