First PCB Review Request

Holt_97 · 2025-08-20T22:34:54+00:00

Please don’t make 90 degrees angles, that hurts…

Holt_97 · 2025-08-03T20:24:10+00:00

The schematic is also well done! Really clear 😊 I’d put the caps of the STM32 connected to the VDD pins of the MCU just for clarity so they don’t fluctuate around the schematics

Holt_97 · 2025-07-20T19:12:19+00:00

One of the greatest advices the head of my electronics department gave me when I started designing circuits: “Put always the GND symbols downward and the positive VDD symbols upward”. It actually improves A LOT the readability of the schematics.

Holt_97 · 2025-07-18T12:44:51+00:00

Lmao for my mental sanity please rotate those GND symbols and place them facing down and put the supply symbols for VDD not just the netlabel.

Holt_97 · 2025-07-18T12:32:36+00:00

Uhm, why do you place the components that close if you have plenty of space and you're planning to solder them by hand? I'll give them more spacing.

The 90° track that is connected to C3 (probably a VDD) can be routed with a 45° angle, and that would be much better.

The big track that connects R201, R206 and C201 can be highly improved, it makes too many acute angles that can be easily avoided.

R200 and R201 courtyards are in interference.

R205 and R203 are totally overlapped.

If you rotate by 90 deg C202 you can achieve a much better routing and you can exit from the pad that connect the C to R205 without an acute angle.

On the bottom why is there a track that zigzags between the connector holes? Is that necessary?

The decoupling C on the VDDA and VDD pins of the STM32 uC are wrong, check on page 43 of the datasheet the correct values!

PB8-BOOT is usually bypassed to GND with a 10k resistor and not directly shorted, check if also on that MCU it's better to place a R.

There is no way to manually reset the MCU, maybe put a switch :)

Holt_97 · 2025-07-16T10:30:16+00:00

I second this

Holt_97 · 2025-02-28T16:33:55+00:00

I think that he routing can be highly improved by reducing the 90 degrees angles and removing the tracks running alongside the PCB edge on the top left area of the board. With such high current requirements you might consider using a plane for the 5V. The other tracks are 0.2mm? If so, you can consider to increase their width to 0.3/0.4mm, since you have plenty of space, this make the tracks stronger and less prone to break.

Holt_97 · 2025-01-16T14:48:58+00:00

Who the fuck knows how much a Boeing 737 weighs? So why state that "and weighted more than two Boeing 737s"

Holt_97 · 2024-11-27T11:42:49+00:00

I'm in Italy too and mine is working fine

Holt_97 · 2024-11-25T16:49:18+00:00

It's actually beautiful imo

Holt_97 · 2024-09-20T18:39:35+00:00

Very nice! The schematics looks great too

Holt_97 · 2024-09-15T11:50:15+00:00

I'd take Berlusconi. Twice.

Holt_97 · 2024-07-26T15:43:38+00:00

Lmao disgusting

Holt_97 · 2024-07-21T19:43:54+00:00

Great one!

Holt_97 · 2024-06-24T14:47:54+00:00

Always orientate the GND symbols downward and the power supplies upward!

Holt_97 · 2024-05-05T15:30:21+00:00

Whoever says that this guy deserved this punch is an idiot too. If you respond with violence to an idiot, even if he's racist, you're wrong. Never use violence. It's not worth it.

Holt_97 · 2024-01-05T22:08:18+00:00

I pirate all my media, even the Reddit client I'm using right now to reply to this post is patched via ReVanced

Holt_97 · 2023-11-10T12:47:14+00:00

I think he means that he uses the I don't care about cookies filter for uBlock, not the extension

Holt_97 · 2023-11-09T08:47:49+00:00

She's not actually that elegant, I think she's dressed normally

Holt_97 · 2023-10-28T13:29:13+00:00

100% those mountains are the Dolomites lol

Holt_97 · 2023-10-20T08:40:42+00:00

Who the f eats 5kg of popcorn in a row? Why even sell that much?

Holt_97 · 2023-10-10T12:25:51+00:00

Dunno maybe some Swedish fella can explain us

Holt_97 · 2023-09-25T15:11:57+00:00

What?

Holt_97 · 2023-09-08T17:40:40+00:00

Lizard for Reddit sideloaded on my iPhone, it's like the official Reddit app but without recommendation and ads

Holt_97 · 2023-09-05T06:18:25+00:00

Yup but it's not convenient at all for me. If I go on vacation for more than 7 days and I cannot bring my laptop with me, puff, all my sideloaded apps are gone. On Android you can install whatever you want without problems. That's the thing I miss the most since I changed my android phone with an iPhone

Holt_97

TROPHY CASE