Wemos D1 mini running hot?

Solved
1

I have a Wemos D1 mini that’s running Blynk, it just maintains a wifi connection, but even if I don’t press anything from the app, the board gets really hot, the metal part over the CPU is at least 60C and it’s probably more.

Is this normal?

I even defined it to be in light sleep mode with the following but I don’t think it helped with the heat.

  //  Force the ESP into client-only mode
  WiFi.mode(WIFI_STA); 

  //  Enable light sleep
  wifi_set_sleep_type(LIGHT_SLEEP_T);
2

It is obvious not right. I suspect some kind of short-circuit inside…

3

Even if I disconnect all of the pins from my circuit it’s still hot.

4

Was it a clone or purchased straight from Wemos (via the Wemos store on AliExpress)?

Sounds like faulty construction… all you can do is use til it dies.

PS, most certainly not Blynk related… unless you ran Blynk.virtualToast() directly in the void loop() <-- EDIT, this is a JOKE :stuck_out_tongue_winking_eye:

5

No I bought it directly from Wemos on AE.
It’s V2.3.0.

6

Contact the seller then.

7

Ask for rufund then. It is defective
I hope that you powered it with the correct voltage…

8

It’s connected to my computer with USB, I have a high quality PSU.

wtf is virtualToast? board benchmark?

9

No… just quirky humor… honestly I didn’t think anyone would take that command seriously, what with everyone reading the documentation so thoroughly :wink:

Seriously though… this is NOT a Blynk related issue… faulty hardware will cause undue heat until it fries itself… there is no “Halt and Catch Fire” commands for ESP8266 :fire: :stuck_out_tongue_winking_eye:

10

I really don’t know… Do you use it?

11

I placed a small heatsink on it for now, I hope it will extend its life lol.

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12

When you get around to water cooling it, post a picture here :smiley:

Ohh, dunk the whole thing into a glass of mineral oil… believe it or not, that can be used for cooling PC’s

13

Lol :fire_engine:

14

I’m sure it would not.

15

Why not?

16

Because wemos shouldn’t get that hot, and heatsink is worse solution than getting bad module back to reseller. ESP12 is designed to work without heatsink, never heard about solution similar to yours before.

17

Shipping it back will cost more than what its worth, it’s what I have now so it’s what I use.

18

You dont ship back, you just ask for a replacement and they send it.

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