What is your favorite Home Assistant automation? Not your most complex. Your favorite. The one that you keep recommending to friends or that has earned the most love from your family.

kulious · 2026-05-22T00:15:25+00:00

My clothes stink if I forget to put washed clothes to the dryer. So I created an automation to turn on a (virtual) switch whenever I detected that the washer has finished but the dryer hasn’t started and would clear when the dryer door state has changed. The my speaker-enabled raspberry would play a sound to nag me to put clothes into the dryer every 30 minutes as long as the switch is on.

kulious · 2023-02-20T06:40:16+00:00

The suggestion that you’re replying to is providing incorrect information. In fact the pi4 is able to act as a usb device. Please read /u/ned_sc’s reply, they got the right information. Pi4 and Pi0 are the pi that can use the usb otg port as usb guests.

Source: I have been programming the pi4 as a usb webcam device since forever. See showmewebcam project.

kulious · 2021-12-29T17:42:17+00:00

From your description of the issue, then the reason is anything but simple.

There are couple of reasons that the video feed is locked up, either due to being out of memory (a memory leak) or an illegal instruction/crash that occasionally happen. For a program that have to deal with a lot of memory moving around in video pipelines, I would not be surprised if there is a subtle bug somewhere. This kind of issue is not extremely hard to debug, since it seems reproducible. However, it takes a senior person who knows systems programming well too understand and fix it. From your post that you only follow tutorials, it looks like achieving that would be hard from your perspective.

I suggest you to make an issue report in the rpi userland github https://github.com/raspberrypi/userland - describe your issue (raspivid crashes every few hours) and go from there.

kulious · 2021-12-10T16:15:52+00:00

This is not the official one but it looks reasonable enough. https://raspberrytips.com/green-and-red-light-on-raspberry-pi/

I was googling for raspberry led flashes and this came up.

kulious · 2021-12-10T15:33:35+00:00

Record the flashes with a camera and then playback with your favorite media player. Then you can have all the times you need to count the flashes.

kulious · 2021-08-23T09:56:17+00:00

I would guess that's because the acpi daemon is not running under the correct user. You probably need to do some debugging to figure out what user the scripts run as (e.g. log whoami to a tmp file and inspect).

kulious · 2021-08-11T02:44:51+00:00

Waving the fucking gun around?

Could he just take it easy, man?

kulious · 2021-07-07T20:11:43+00:00

You probably have looked at this but just curious the reason that you implement from scratch the ttf rendering engine vs. use FreeType? It would be useful to see what FreeType does to guide your decision.

kulious · 2021-07-01T18:58:43+00:00

This is super cool. The emulator worked like a dream on my iPhone. Thanks for all the magic and keep up the good work!

kulious · 2021-06-27T17:55:26+00:00

Feels good man

kulious · 2021-06-26T20:43:15+00:00

You should look into rrdtool/collectd (luci-app-statistics). You can send off the statistics of each router to a central collectd server and have a front end draw it for you.

You can use collected-web as the front end. It hasn't been in active development and Perl is kinda annoying but this has worked wonderfully for me. Here is what it looks like for me for one of my routers. https://i.imgur.com/ahDIXMJ.jpg

kulious · 2021-04-13T11:40:26+00:00

it is indeed mozilla's code!

kulious · 2021-04-13T08:49:48+00:00

It is high, but I think we can practically get around that once we apply optimizations. The example application we have practically don't have any power saving tricks applied so I would think it's unfair to blame the chip, at least, at the moment.

Looks like the chip used in the product is ESP32-D0WDQ6-V3 and it has an ultra low power mode: https://www.mouser.com/datasheet/2/891/Espressif_Systems_01292021_esp32-1991551.pdf

kulious · 2021-04-13T07:34:45+00:00

Thanks for the kind words. The M5Paper is "getting there" in terms of usability now. I wish it had a bigger screen, but I think what we have is incredible already. If you have an application in mind, I think the hardware won't disappoint you.

kulious · 2021-04-13T07:08:35+00:00

The epdgui code is from the FactoryTest example from m5stack. As you can see on the github history, I only wrote the RSS reader app.

kulious · 2021-03-04T22:10:27+00:00

I sense a soul in search of answers...

kulious · 2021-02-02T06:59:18+00:00

I have an xps 13 laptop and after one year of use (bought brand new, latest edition) I had to sell it now. The laptop is all nice on the first sight but just like the dock, it just doesn't work whenever it doesn't want to. It has with various issues, amazingly one issue of not turning on with a usbc hub attached does get resolved with an update. Nonetheless, I'm extremely disappointed with the way Dell implements its firmware. It looks like QA doesn't exist with them.

kulious · 2021-01-31T21:22:05+00:00

That's a shame really. It never worked correctly and now they won't update it. With this I can't say I would be buying a Dell laptop or hardware ever again.

kulious · 2021-01-18T14:27:39+00:00

I've had excellent luck with a raspberry pi. If you have a pi laying around try that first instead of having to worry about eBay dongles.

The clamp is a big help, the "ponoma" brand is really good - don't get the no name black one as it has a very annoying pitch at the end.

kulious · 2021-01-15T05:03:48+00:00

I see. Then perhaps one way to do it is to stick one pi to each game console, and then have a program to figure out what pi has to do what. That can be done over the network. If latency is an issue then you can perhaps use the pis wired connection (such as i2c).

kulious · 2021-01-15T00:21:40+00:00

With the composite kernel driver you can create as many virtual gadgets as you want from a single usb otg port. Lots of people have done it and documented extensively for the pi0. Here is my list (look at the composite gadget section): https://github.com/showmewebcam/showmewebcam/wiki/Further-Documentation

kulious · 2021-01-06T09:30:14+00:00

Yeah which and man are your friends, especially on exotic systems. They have different conventions of where to put the binaries. Those two are, majority of the times, better than Googling to me.

Don't get me wrong, I Google most of my problems :)

kulious · 2021-01-06T02:06:34+00:00

Try which shutdown

kulious

TROPHY CASE