Comments for Random Nerd Tutorials https://randomnerdtutorials.com Learn ESP8266, ESP32, Arduino, and Raspberry Pi Fri, 08 Apr 2022 00:38:27 +0000 hourly 1 https://wordpress.org/?v=5.9.3 Comment on ESP32/ESP8266: Firebase Data Logging Web App (Gauges, Charts, and Table) by mike w https://randomnerdtutorials.com/esp32-esp8266-firebase-gauges-charts/#comment-736538 Fri, 08 Apr 2022 00:38:27 +0000 https://randomnerdtutorials.com/?p=108701#comment-736538 That was the fix. I re-deployed the modified auth.js and all is goodness and light. Thanks!

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Comment on ESP-NOW Two-Way Communication Between ESP8266 NodeMCU Boards by Colin https://randomnerdtutorials.com/esp-now-two-way-communication-esp8266-nodemcu/#comment-736508 Thu, 07 Apr 2022 21:19:22 +0000 https://randomnerdtutorials.com/?p=97190#comment-736508 In reply to Sudhanshu Trivedi.

It’s still using electromagnetic radiation so doesn’t need a medium. You may know that the ESP can create an access point WiFi.softAP(Sensor_User, Sensor_Password) and so it’s not surprising that it can communicate with another ESP.
No WiFi just means it’s not connecting to a router.

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Comment on ESP32 with TDS Sensor (Water Quality Sensor) by Sara Santos https://randomnerdtutorials.com/esp32-tds-water-quality-sensor/#comment-736457 Thu, 07 Apr 2022 16:46:24 +0000 https://randomnerdtutorials.com/?p=109306#comment-736457 In reply to Dave R.

Hi.
Yes. That’s right.
Thanks for letting me know.
It is fixed now.
Regards,
Sara

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Comment on ESP32-CAM Connect External Antenna (Extend Wi-Fi Coverage) by Daniel Cook https://randomnerdtutorials.com/esp32-cam-connect-external-antenna/#comment-736456 Thu, 07 Apr 2022 16:42:44 +0000 https://randomnerdtutorials.com/?p=94877#comment-736456 In reply to Sara Santos.

Sorry about the messed up msg – I was “saving” it as I went along and I just forgot to delete some of the earlier existing copy. It’s called “proofreading” right?

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Comment on ESP32-CAM Connect External Antenna (Extend Wi-Fi Coverage) by Daniel Cook https://randomnerdtutorials.com/esp32-cam-connect-external-antenna/#comment-736454 Thu, 07 Apr 2022 16:38:19 +0000 https://randomnerdtutorials.com/?p=94877#comment-736454 In reply to Sara Santos.

Hello Sara, let me first say that I LOVE how you guys work. I mentioned this in another msg – another subject – but I have several of your books and they are immensely helpful – thank you for that.

Now, I don’t know if this thread is still open or not but I guess I’ll see! I’ve been struggling for hours – maybe even days trying to get this ESP32-“U” board working. What a comedy or errors and limited information about just about everything in the Arduino world! Lots of “learning curve” – OK enough of my stumping.

I am working on a project whereby I can use my current doorbell chime and its’ 18vac existing cabling, combined with an ESP32-U and a couple of ESP32-Cams. I’m getting there albeit very slowly – “learning curve”!! The “32U” is acting as a server of sorts whereby it controls a dual relay to physically trigger the doorbell chimes. It is mounted, along with a PS and the relay board inside the doorbell housing – all powered of course by the existing 18vac transformer. This part works GREAT – after I figured out all the little nuances of the 32U.

First of all, determining what “board” to use in the IDE was interesting but it was, after all, simple – just use the “DOITESP32DevKit” along with “your” Hello Sara, let me first say that I LOVE how you guys work. I mentioned this in another msg – another subject – but I have several of your books and they are immensely helpful – thank you for that.

Now, I don’t know if this thread is still open or not but I guess I’ll see! I’ve been struggling for hours – maybe even days trying to get this ESP32-“U” board working. What a comedy or errors and limited information about just about everything in the Arduino world! Lots of “learning curve” – OK enough of my stumping.

I am working on a project whereby I can use my current doorbell chime and its’ 18vac existing cabling, combined with an ESP32-U and a couple of ESP32-Cams. I’m getting there albeit very slowly – “learning curve”!! The “32U” is acting as a server of sorts whereby it controls a dual relay to physically trigger the doorbell chimes. It is mounted, along with a PS and the relay board inside the doorbell housing – all powered of course by the existing 18vac transformer. This part works GREAT – after I figured out all the little nuances of the 32U.

First of all, determining what “board” to use in the IDE was interesting but it was simple – Just use the “DOIT ESP32 Dev Kit” and the sketch from your CAM book “https://RandomNerdTutorials.com/esp32-esp8266-web-server-outputs-momentary-switch/” – the IDE board was one of your suggestions from here in the forum section.

Along with the IDE board selection, there was the issue of the “antenna”. First of all, this particular board “U32” does not have an “internal” antenna. Try to find that essential info anywhere in the Arduino world. So naturally I spent a great deal of time trying to get the U32 to connect to WIFI – about a day and a half on this issue. Then, trying to get the external ant connect was a chore too. My big hands just couldn’t get the right angle – that’s where your “just snap it down … it won’t break” comment came into play. Everything I have up to this point works great. Doorbell rings just by pressing the HTML button in the sketch!

As I said, I’ve got a long way to go, but I wanted to see if some of this info might help someone else trying to connect an antenna to an ESP32U Module.

Sorry about the “book” but I just wanted to layout my project for you because I am sure I will be coming back to you for additional “Help”.

Thanks a bunch for all your help, Dan Cook

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Comment on ESP32-CAM Video Streaming Web Server (works with Home Assistant) by Warner https://randomnerdtutorials.com/esp32-cam-video-streaming-web-server-camera-home-assistant/#comment-736444 Thu, 07 Apr 2022 14:42:06 +0000 https://randomnerdtutorials.com/?p=83379#comment-736444 Am I right that if I want another resolution I change line 231 (and 235)?
I want to mount a camera in the front of a modeltrain locomotive to be able to see what the driver of that loc would have seen.
I don’t want a very high resolution as I want a nice framerate.

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Comment on ESP32/ESP8266: MicroPython OTA Updates via PHP Server by James https://randomnerdtutorials.com/esp32-esp8266-micropython-ota-updates/#comment-736430 Thu, 07 Apr 2022 13:59:45 +0000 https://randomnerdtutorials.com/?p=109647#comment-736430 In reply to Alain.

Here is a link to some good info on securing PHP servers: https://docs.php.earth/security/intro/#use-https

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Comment on ESP32-CAM AI-Thinker Pinout Guide: GPIOs Usage Explained by yorrrick https://randomnerdtutorials.com/esp32-cam-ai-thinker-pinout/#comment-736427 Thu, 07 Apr 2022 13:53:19 +0000 https://randomnerdtutorials.com/?p=94759#comment-736427 In reply to yorrrick.

Correction. 1-bit SD mode is different from SPI SD mode. It seems SD cards can be driven in SPI mode but not using the SD_MMC library. You need to use the SPIClass library instead. See https://github.com/moononournation/ESP32_SD_Benchmark/blob/master/ESP32_SD_Benchmark.ino for an example.
Then GPIO12 is free and available to support another SPI device on the same SPI bus as the SD card. I haven’t done this yet but it is on my todo list.

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Comment on ESP32-CAM Video Streaming and Face Recognition with Arduino IDE by jbpomme https://randomnerdtutorials.com/esp32-cam-video-streaming-face-recognition-arduino-ide/#comment-736421 Thu, 07 Apr 2022 13:21:08 +0000 https://randomnerdtutorials.com/?p=82418#comment-736421 In reply to Sara Santos.

ESP 32 by Espressif Systems version 1.0.6

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Comment on ESP32 with TDS Sensor (Water Quality Sensor) by Dave R https://randomnerdtutorials.com/esp32-tds-water-quality-sensor/#comment-736419 Thu, 07 Apr 2022 13:06:00 +0000 https://randomnerdtutorials.com/?p=109306#comment-736419 I believe you have misspelled compensationVolatge (compensationVoltage). Just FYI.

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