Comments on: ESP32 Data Logging to Firebase Realtime Database

By: Sara Santos

Sara Santos — Mon, 02 Jun 2025 09:26:01 +0000

In reply to Nicolas.

Hi.
Thanks for sharing that fix.
Regards,
Sara

By: Nicolas

Nicolas — Sun, 01 Jun 2025 21:40:39 +0000

Hi! In case anyone is trying to do the SSL verification when connecting an ESP32 to a Firebase RTDB. Instead of using client.setInsecure(), you have to search for the root certificate (in the case of Firebase DB is GlobalSign Root R1) in Base64 format, and set it with client.setCACert() in form of a string, respecting each break line.
I had a bad moment trying to do this until I figured it out, hope this helps haha.

By: selestial

selestial — Wed, 05 Mar 2025 06:33:19 +0000

How to get these timestamps on another esp32?

By: Hansie

Hansie — Wed, 16 Oct 2024 16:42:20 +0000

Good day everything works great. What I need now is to read data from the Firebase database with the authentication added please help

By: Sara Santos

Sara Santos — Fri, 29 Mar 2024 16:30:00 +0000

In reply to Stein.

Hi.
Yes. You can do that.
Just make sure you initialize Firebase after deep sleep.
You can check our deep sleep tutorial here: https://randomnerdtutorials.com/esp32-deep-sleep-arduino-ide-wake-up-sources/
Regards,
Sara

By: Stein

Stein — Fri, 29 Mar 2024 03:36:02 +0000

Hello Sara,
I do find your content to be quite amazing as I intend to use this concept on a project I am working on but I however do have some worries.
I wish to ask if it will be possible to set the ESP32 to sleep mode when data is not being sent to the real time database so as to minimize power consumption in a scenario where the ESP32 is being powered by an external source such a battery etc..

By: Sara Santos

Sara Santos — Thu, 07 Mar 2024 09:23:42 +0000

In reply to Kélton Severo.

Hi.
Do you have more information about the error?
Regards,
Sara

By: Kélton Severo

Kélton Severo — Wed, 06 Mar 2024 22:17:48 +0000

Hi! Your content its so good that i acutally bought the Firebase WEB APP ebook! But tesing my database i always run a error after 10-20minutes sending data to the Real Time Database. The code works great then all of sudden it starts reporting “connection lost” when appending the JSON file. I thought that maybe the token expired after sometime, but testing with assigning a bool variable to the function “Firebase.isTokenExpired()” it informs me that actually was never expired to begin with, increasing the time between connections also didnt solved it. Im using ESP32 1.0.4(but in newer versions the problem also persists), anyway thanks for you excellent content and heres my code:
(…)

By: Julio

Julio — Wed, 21 Feb 2024 15:53:15 +0000

Hi, every 100 hundreds write i have this message Set Json… response payload read timed out, what coud it be? I am writing every 10ms perfectly until the 101th write when this happens, and then after 1-2 seconds the program continues with the 102th write and then repeats again the problem at the 201th.

By: Robert JO

Robert JO — Wed, 29 Nov 2023 00:38:17 +0000

Hello, if for example I have two different users. User1 and User2. Will user1 have different readings than user2 or will they have the same data in the “View all data” section.