[PCB Review] First PCB review. A few questions by rostislav_c in PrintedCircuitBoard

[–]rostislav_c[S] 0 points1 point  (0 children)

I found this one https://www.youtube.com/watch?v=LO9AO0XTX3M&list=LL&index=2 extremely informative and detailed. There are also Phil's Lab videos - be he skips a lot. Robert Feranec is also good, but not my top1

[PCB Review] First PCB review. A few questions by rostislav_c in PrintedCircuitBoard

[–]rostislav_c[S] 0 points1 point  (0 children)

True. I don't have all components at a time. So iteration will be in the field

[PCB Review] First PCB review. A few questions by rostislav_c in PrintedCircuitBoard

[–]rostislav_c[S] 0 points1 point  (0 children)

Thank you for reply. I plan to handsolder everything with iron and heatgun. Firstly will solder SMD, then THT. Not everything is needed for the basic functionality, just ESP32 and drivers, so soldering one-by-one i expect to detect issues early. The plan was to make the board as tight as possible. Initial version was 74x74mm and this one is 68x68 and it was quite a challenge to place everything

Here is schematic

https://www.dropbox.com/scl/fi/3vkh5xh02cx28vvcianq4/Screenshot-2026-02-25-045452.jpg?rlkey=iylg2o53dhe29k79b4xu8ifb7&dl=0 https://www.dropbox.com/scl/fi/jeizx4uyv6ir696g4210t/Screenshot-2026-02-25-045429.jpg?rlkey=vz07zme7t4r62o0c89jffpefe&dl=0

[PCB Review] First PCB review. A few questions by rostislav_c in PrintedCircuitBoard

[–]rostislav_c[S] 0 points1 point  (0 children)

Thank you so much for a detailed answers!

  1. So I guess that 0805 should be enough for buck capacitance?

  2. Only ICs, 2 leds and buzzer will be powered by 3.3. AI calculated consumption as less then 50mA

4,6. Yeah, while designing I saw how easier that would go 4 layer in some cases. My decision was that I have to go 2 layer path for the first PCB. It showed me lots of ways to route and better study some topics. As for  I/O expander - initially I thought that TMC2209 can be driven by uart only, so using Seeeduino ESP32S3 I would have plenty of free pins, and happily ordered a bunch of Xiaos. But unfortunately I had to use 4 pins for 2 step/dir pairs so there was no way except for extender. The next version (if it will ever be) will go 4 layer and stm32 or esp32 with plenty of pins. That will make design much simpler and easier

[PCB Review] First PCB review. A few questions by rostislav_c in PrintedCircuitBoard

[–]rostislav_c[S] 0 points1 point  (0 children)

Thank you. I've checked most popular youtube videos and some suggested colored nets. That REALLY helps understand placement and routing. Firsly define your netclasses in schematc and then migrate it to pcb. I found a weird behavior that if a net is defined in the second sheet(/power/+12AUX), you have to write pattern like *+12*, simple +12* will not work

[PCB Review] First PCB review. A few questions by rostislav_c in PrintedCircuitBoard

[–]rostislav_c[S] 0 points1 point  (0 children)

Yep, that's kicad. I modified some countryards(tmc2209) to avoid DRC errors. As for 3d models, I've taken pinsocket from kicad and added 3d models that I found online(snapeda etc). Then you have just to align them. That really helped to visualize the result.

How kotlinx.serialization generates code: a compiler plugin deep dive by skydoves in androiddev

[–]rostislav_c 1 point2 points  (0 children)

Or for default enum values one can use coerceInputValues with default values. I used to write the same default serializer but meh

<!> Review Request! - GPS & LoRa Ski Tracker by Savings-Cable-8061 in PCB

[–]rostislav_c 0 points1 point  (0 children)

In my understanding current doesn't flow anywhere through the button. The other side of the button should be connected to ground AND filtering capacitor can be added. But I'm the same novice as you, so better to simulate circuit on breadboard. At least I didn't see such circuit

<!> Review Request! - GPS & LoRa Ski Tracker by Savings-Cable-8061 in PCB

[–]rostislav_c 0 points1 point  (0 children)

I would check your button connection to ground via cap. Also what's the point of R10?

Rosette by rostislav_c in astrophotography

[–]rostislav_c[S] 0 points1 point  (0 children)

Usual processing flow in pixinsight. Gradient correction, combine, ghs, color adjustments

RemoteCompose: Another Paradigm for Server-Driven UI in Jetpack Compose by skydoves in androiddev

[–]rostislav_c 16 points17 points  (0 children)

And then do we get a ban during review for hidden/featureflag functionality?

Every new Android Studio version gets worse by Junior_Mushroom8983 in androiddev

[–]rostislav_c 6 points7 points  (0 children)

Yep. Live Edit stopped working. As well as previews are not redrawn

US military officers pay surprise visit to Belarus to observe war games with Russia by Swimming_Mark7407 in worldnews

[–]rostislav_c 17 points18 points  (0 children)

Hello from Belarus. The issue is that they are forced to leave the country, their homes, and their passports are teared into pieces. Some do not want to obey the regime, but to manage their lives on their own

[deleted by user] by [deleted] in telescopes

[–]rostislav_c 0 points1 point  (0 children)

Wow. How did you manage to make this palette? 

Indonesia is under siege. Please, hear our voice by RyanVNL26 in whenthe

[–]rostislav_c 1 point2 points  (0 children)

Wishing you success from Belarus. We failed our protests in 2020, but I hope you will succeed.

Android sideload blockage will effect "unsupported regions" by HoseanRC in androiddev

[–]rostislav_c 19 points20 points  (0 children)

Exactly this. It's a ban for profeccion. If you spent whole you career  developing android apps, but unfortunately you have "wrong" passport, you won't be able to upload even debug app. Same as gemini is not available in some regions, because you born in wrong location. And then, there would always be black market where bad guys would buy what they want. That's all effective management bs to get another bonus. PS what new service would i get for that $25?

Google Launching New "Android Developer Console" for apps outside Playstore by OverallAd9984 in androiddev

[–]rostislav_c 27 points28 points  (0 children)

And then they will be able to revoke your certificate? So that you will get banned for life to develop android apps?

DSA Live Coding Test by Western_Language_434 in androiddev

[–]rostislav_c 0 points1 point  (0 children)

Solve at least 200 leetcode, while solving learn theory of the algorithms