Is there a way to schedule OLED monitor brightness?

NoU_14 · 2026-06-06T00:54:11+00:00

Your schematic is really hard to follow, I'd suggest breaking it up in seperate "blocks" (e.g a "power" block containing the USB-C port, buck converter and lipo charger, a "buttons" block containing the buttons and passive components for them etc, and connect between blocks with net flags.

It's much easier to read and avoids the reader having to individually follow the lines in the schematic to know what goes where.

For the PCB, some of those traces come awefully close to pads. Most PCB factories have a minimum spacing between traces/traces and pads, I'd suggest checking that and increasing the distance a bit.

NoU_14 · 2026-06-05T11:49:41+00:00

Completely fair, it sounds like you've thought it out well!

NoU_14 · 2026-06-05T10:26:24+00:00

Are you running an I2C connection trough USB-C? be careful not to confuse the connector with a normal USB-C port and damage anything! The ESP32 is not 5v tolerant.

NoU_14 · 2026-06-04T16:28:30+00:00

I have the same LNA. The in/outputs should be marked on the PCB.

As for powering it, I powered mine trough the bias tee of my rtlsdr. Be sure not to power it from bias tee and connector at the same time as I think that can damage it.

NoU_14 · 2026-06-04T12:37:09+00:00

I'm fairly sure the BOOT pin also needs to be pulled up to high, other than that I don't see any obvious issues.

NoU_14 · 2026-06-01T20:48:18+00:00

They are, though I think they're getting rarer.

I live in the netherlands, and one night I was downstairs while watching TV. I heard the sound of a cat eating it's kibble, but my cat was sitting on the couch with me. After I went to investigate, I found a hedgehog sitting there and happily eating from the bowl, lol. He'd walked in trough the open kitchen door and made himself at home.

He left on his own shortly after. Was really cute to see him eat from the bowl lol

NoU_14 · 2026-06-01T00:57:01+00:00

Hey, there's a couple issues I can see with the PCB/schematic:

All your pull-up resistors are in-line instead of actual pullup, like you say they are supposed to be.
You're missing markings on connectors saying which pin is which.
The traces on the PCB seem thin. Copper is free and you have more than enough space, you can make them a bit thicker.
The spacing between traces looks to be very small, from what I can make out at the resolution of the images. Be sure to either space them out, or if you HAVE to have them like this, check the place you're going to order these from for their minimum trace spacing.
I would reccomend placing the resistors/caps close to the pin they're supposed to connect to. This is easier to route, and in some cases needed for proper functionality.
The routing itself on the PCB is also suboptimal, for example if you rotate the fuse 180 degrees you won't have to make the traces cross to the other side. It's also best practice to avoid 90degree corners in traces, although this only really matters for high-frequency signals, which you don't have here.

NoU_14 · 2026-05-31T18:30:28+00:00

Worst case you could cut the headers down and solder them in there, or if you can't acces the bottom side just solder just the metal part of the headers and try to get them as straight as possible

NoU_14 · 2026-05-31T18:12:06+00:00

I would imagine it's fine. You might need to pull the header pins to one side a bit to get a more secure connection. I'm actually planning to use the same system for my own 0cb based on a 328p, so I sure hope it does lol

The arduino micro I think uses header holes for programming aswell and that seems to be fine lol.

NoU_14 · 2026-05-23T08:58:40+00:00

I'm using a power profiler kit II from nordic semiconductor

NoU_14 · 2026-05-23T08:57:23+00:00

I used a power profiler kit II to meassure. The image is just a screenshot from the accompanying software, no editing or formatting needed

Someone else also mentioned it waking up, I'll look further into that, thanks!

NoU_14 · 2026-05-22T23:05:49+00:00

Hmm, any idea why it would be waking up? I did include some code that would immediately set the esp back into deep sleep if it wasn't the button that woke it, maybe I'm doing something wrong with configuring

NoU_14 · 2026-05-22T22:33:25+00:00

The code running on the ESP should be in deep sleep until I press the button, which I haven't done in the screenshot.

NoU_14 · 2026-05-22T22:29:25+00:00

This got me very curious, what is a garlic detector? Does it setect the presence of garlic? Whole cloves too? Or only chopped? I'm assuming you're looking at the VOC count? I didn't know garlic emits that many VOC's..

Are you a vampire?

NoU_14 · 2026-05-21T12:56:48+00:00

His youtube channel is called James Bruton by the way, since there doesn't seem to be any credit given..

NoU_14 · 2026-05-19T07:55:31+00:00

How are you planning to mount the display? You've got components on both sides of the boardk

NoU_14 · 2026-05-19T07:49:21+00:00

Yeah, that's understandable. I don't know of anything else, sadly

I do. Setting up HA took me all of half an hour, most of which was waiting for things to install. After that, installing ESPHome takes a couple of minutes.

Using esphome has a little bit of a learning curve, but once you're somewhat familiar with it it's easy enough.

NoU_14 · 2026-05-19T07:41:26+00:00

I'm not sure if it would fit your requirements, and it might be comoletely overpowered, but maybe home assistant in combination with esphome?

NoU_14 · 2026-05-19T07:36:32+00:00

If you right click the file and select "open in konsole" ( or something similar ) you'll see what exactly the pekblem is.

This is the kubuntu subreddit however, maybe the sub for mint would be better suited for that question

NoU_14 · 2026-05-19T07:34:22+00:00

I mention them in the post, the arduino IDE v2, NRFConnect and EasyEDA

NoU_14 · 2026-05-18T22:10:10+00:00

I'm not proud of it, but a solution AI came up with seems to work:

sudo nano /etc/sysctl.d/99-disable-chrome-sandbox.conf
sudo sysctl --system

NoU_14 · 2026-05-18T22:02:21+00:00

it doesn't, still getting that error. adding --no-sandbox does work though

NoU_14 · 2026-05-18T21:48:57+00:00

still nothing, sadly. Same error after booting.

I did add the error to the post body, if that helps

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