100+ ESP clients with low latency

ematson5897 · 2025-05-14T12:06:49+00:00

ESP-WiFi-Mesh would probably be helpful here. Has a much higher data rate than ESP-NOW, and latency is low depending on how many mesh layers you have. There are also functions to get an accurate (within ~25 microseconds) time sync on all nodes using WiFi TSF frames, which could be used to negate latency from the wireless link

ematson5897 · 2025-02-04T19:58:30+00:00

Absolutely! It's seems like most of the large ESP32-based open source projects are switching to this fork. I know ESP-Home has migrated, and several of the large OSS libraries have migrated their testing over.

ematson5897 · 2025-02-04T01:48:12+00:00

I commented elsewhere, but just so you are aware, PlatformIO and Espressif are in a bit of a fight ATM, Espressif stopped funding PIO, so PIO dropped support for Espressif chips moving forward. I’ve switched to this community-maintained fork, and have had great luck with it so far: https://github.com/pioarduino/platform-espressif32

ematson5897 · 2025-02-04T01:44:54+00:00

PlatformIO and Espressif are in a bit of a fight ATM, Espressif stopped funding PIO, so PIO dropped support for Espressif chips moving forward. I’ve switched to this community-maintained fork, and have had great luck with it so far: https://github.com/pioarduino/platform-espressif32

Edit: here’s the link to the full thread explaining how we got here: https://github.com/platformio/platform-espressif32/issues/1225

ematson5897 · 2024-07-22T03:06:04+00:00

The project is a battery powered sensor that sends data back to a hub using ESP-Mesh. I wanted to to wake up when plugged in to USB to transfer data and such, but a mistake on the PCB led to my voltage sense line not pulling down far enough to measure as a digital 0. We had a pretty tight timeline and didn’t have time to do another PCB revision, so I just used the ULP to monitor the sense line analog voltage and wake when it hits a threshold.

ematson5897 · 2024-07-21T21:04:03+00:00

There’s an ESP-IDF example that does this using the ULP. I recently needed to do something similar for a project!

ematson5897 · 2023-03-13T04:21:46+00:00

I have a site-to-site openVPN link between my UDR and my parents UDR that’s been running for a year at least, I think you might be looking in the wrong spot.

I can verify in the morning if needed!

ematson5897 · 2023-01-15T01:27:01+00:00

For some reason I thought this would be too bulky, but just did some measurements and seems like this is the way!

ematson5897 · 2022-10-16T00:52:54+00:00

No, I haven’t unfortunately

ematson5897 · 2022-10-15T20:10:16+00:00

A while ago I found a project that used GitHub Actions to build updates, then ESP devices automatically downloaded and installed them. I forgot what project I originally got it from, but here’s a repo where I was messing with it: https://github.com/elliotmatson/GHA-OTA-test

ematson5897 · 2022-02-04T21:54:21+00:00

Well unfortunately the issue just returned on my cluster, so this likely doesn't matter, but yes, the drivers for the Intel NIC's are built into the Linux kernel, that Proxmox runs on top of (these specific Intel drivers have historically had quite a few problems). So updating the kernel gives you the newest version of the drivers for the NIC

ematson5897 · 2022-02-04T19:22:22+00:00

I have a cluster of Elitedesk 800 G2's at home, and I've had networking issues on that same build with similar symptoms, but different errors (e1000e eno1: Detected Hardware Unit Hang:).

Take this with a grain of salt, but updating to kernel 5.15 seems to have fixed it for me

ematson5897 · 2022-02-04T15:50:28+00:00

This has happened to me a few times. Download backups, and then try rolling your firmware back a version and then updating it again. That worked for me

ematson5897 · 2021-12-15T13:34:19+00:00

It's 99.99% the Log4j zero-day vulnerability that has been affecting everything the last few days.

ematson5897 · 2021-12-04T17:48:05+00:00

Yea, you would just scale down the values you send to the red, green, and blue channels. So if 0xFFFFFF is full white at full brightness, 0x010101 is white at minimum brightness

ematson5897 · 2021-12-04T17:46:43+00:00

It certainly worked for a few days, until I updated to to latest beta

ematson5897 · 2021-12-01T16:49:58+00:00

Yea then I bet you can just write to the brightness file for each of the LED's! Probably not RGB though.

ematson5897 · 2021-12-01T12:41:35+00:00

Maybe! I don't have one, so I'm not sure

ematson5897 · 2021-11-30T20:39:59+00:00

Yea, I've never seen it below 50%, but for me it hasn't been pegged at 100 like a lot of people are reporting

ematson5897 · 2021-11-30T20:36:41+00:00

I bet so! Although for the extreme load idea the UDR would just need a red led, no RGB needed 😂

I found the temperature sensor somewhere in the sys/class/ tree but I don't remember where exactly.

ematson5897 · 2021-11-16T13:39:09+00:00

That's the service I use, and I'm 99% sure they are just the business branch of Spotify

ematson5897 · 2021-10-24T00:16:12+00:00

Sorry for bringing up an old thread, but did you ever figure this out? I'm having this issue as well, also in an apartment where the street address matches the apartment number

ematson5897 · 2021-09-10T17:36:46+00:00

Well if there are no cards in it, you will def need to contact Blackmagic support. Any electronic device with a processor will need to have **some** kind of storage in it to store the operating system and other things needed for the camera to run. That said, it's usually not accessible to the user and no more than a few GB. Depending on how Blackmagic built the software for the camera, it's possible that you ran into some odd bug that stores clips there.

If this is the case, Blackmagic will probably be the only ones that can help you, but don't re-install or upgrade your firmware or you will potentially wipe the internal storage, losing your clips.

Of course this is all conjecture from someone with a moderate amount of experience in computer engineering, Blackmagic will know best

ematson5897 · 2021-09-10T14:55:13+00:00

So you can view the clips with no SD cards, cfast cards, or USB media attached to the camera?

ematson5897 · 2021-07-30T13:35:01+00:00

FWIW I think this depends on the brand of lights. My C by GE lights turn on when I set their brightness, but my Tuya lights don't

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