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arendst / Tasmota

Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at
https://tasmota.github.io/docs
GNU General Public License v3.0
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Thermal Imaging video of Sonoff and Electrodragon #221

Closed stoehrmark closed 7 years ago

stoehrmark commented 7 years ago

First off this is excellent code thanks for all your hard work!!

I took some video showing the temperature the boards get to under a 10A load. Don't know if this is good or bad. But it is what it is.

Sonoff https://youtu.be/S5ubXyYH0_0 Parts of this board get to 54˚C under normal operation.

Electrodragon https://youtu.be/fw8nh8uWj3E Parts of this board get to 77˚C under normal operation.

davidelang commented 7 years ago

Nothing we can really do about it since we don't have any control over the hardware.

It doesn't surprise me that this code gets hotter than stock (it does a lot more). If you are concerned about the temps, you can enable the sleep function. It's there to reduce the power draw, but that will also reduce the heat generated.

running at a lower clock speed will probably also make things cooler.

stoehrmark commented 7 years ago

@davidelang This was never intended to compare the stock code to this one and yes it does do a ton more. Thank you to @arendst and helpers!!

In fact the Sonoff had stock code and the Electrodragon was without any code when i did the video. It was just to show that under full load 10A the board traces primarily the mains voltage load traces get hot. I'm suggesting that users should be careful. No one wants a fire.

I'm certainly not any expert or engineer just passing on my observations. These could be totally acceptably temperatures. I think these devices are great. I have got quite a few running.

Long live the ESP8266.

davidelang commented 7 years ago

ahh, I thought you were talking about CPU temps.

As for the trace temps, we have to trust the vendor to get things right.

They have done a recall of the TH series of devices because of exactly this reason, there wasn't enough solder on the traces, so they were getting too hot.

stoehrmark commented 7 years ago

I did see that recall. For myself I never run my devices anywhere near 10A. Just to be safe.

I don't have any of the Sonoff TH16s to see what they look like under load. I will have to see if i can get one to test.