Search found 84 matches

by alanesq
Mon Oct 18, 2021 8:39 pm
Forum: ESP32 Arduino
Topic: How to get the data of captured image in esp32-cam
Replies: 1
Views: 3441

Re: How to get the data of captured image in esp32-cam

Hi,
A similar question has been asked here which may be of help: viewtopic.php?p=85330#p85330
by alanesq
Mon Oct 18, 2021 8:37 pm
Forum: General Discussion
Topic: ESP32-CAM: Can someone explain how the camera frame buffer pointer works
Replies: 5
Views: 20393

Re: ESP32-CAM: Can someone explain how the camera frame buffer pointer works

Hi, I don't think it possible to access individual pixels when it is captured as a JPG as it is stored in this compressed format so it would need to be decoded first. You could capture the image as RGB or Greyscale directly and access the data rather than capture as JPG then convert if (not somethin...
by alanesq
Wed Aug 04, 2021 3:25 pm
Forum: Hardware
Topic: I'm getting constant brownouts powering ESP32-CAM
Replies: 6
Views: 4533

Re: I'm getting constant brownouts powering ESP32-CAM

I would try a decent sized capacitor on the 5v feed to the esp32cam
When using wifi it generates large spikes of power draw and this is probably upsetting your step up converter

If you have an oscilloscope it is worth having a look at the 5v feed to the esp32cam to see what is happening
by alanesq
Wed Jun 09, 2021 4:56 pm
Forum: ESP32 Arduino
Topic: esp32-cam drops streaming after a while
Replies: 3
Views: 6227

Re: esp32-cam drops streaming after a while

Hi, I find power supply is always the first thing to suspect if an esp32 starts doing anything unusual I have heard reports of the cameras getting very warm so maybe check it is not overheating I have a sketch (Arduino IDE) which streams live video which you might like to try to rule out if it is th...
by alanesq
Mon May 10, 2021 6:48 am
Forum: Hardware
Topic: Cutting power of ESP32 with a power switch
Replies: 2
Views: 4196

Re: Cutting power of ESP32 with a power switch

I think this may be what you are looking for?

https://randomnerdtutorials.com/latchin ... 6-arduino/
by alanesq
Thu May 06, 2021 4:52 pm
Forum: ESP-IDF
Topic: esp32-wifi
Replies: 9
Views: 5408

Re: esp32-wifi

It is worth checking the power supply to it is good as I have known them to do all sorts of weird things if they are not happy with the power.
by alanesq
Mon May 03, 2021 6:07 am
Forum: General Discussion
Topic: best way to delay ESP32 CAM for 2 days
Replies: 1
Views: 2149

Re: best way to delay ESP32 CAM for 2 days

This may be of interest: https://www.hackster.io/nickthegreek82/ ... ial-4398a7

If the timing needs to be accurate you could look at using NTP over wifi to get the actual time or use a Real Time Clock (RTC) module.
by alanesq
Sat Apr 24, 2021 6:45 pm
Forum: General Discussion
Topic: esp32-cam ai-thinker, antenna, ext.antenna, your experience
Replies: 1
Views: 2013

Re: esp32-cam ai-thinker, antenna, ext.antenna, your experience

My experience of the esp32cam module is the onboard antenna doesn't seem to work very well. well, It works ok but if you try and put it in any type of case or even have anything near it then it will often result in very limited range or even stop working all together Other esp32 development boards I...
by alanesq
Thu Apr 22, 2021 6:04 am
Forum: General Discussion
Topic: How to remove ESP32 Board from Arduino IDE on a Linux (Mint) Computer
Replies: 2
Views: 3051

Re: How to remove ESP32 Board from Arduino IDE on a Linux (Mint) Computer

Hi, I believe you just need to delete the "packages/esp32/" folder Problem is I don't remember exactly where it is as I use the "portable" option myself I think it will be in your home folder in ".arduino" or ".config.arduino" BTW - You may like to try the portable option yourself as it then keeps a...
by alanesq
Tue Apr 20, 2021 5:42 am
Forum: ESP-IDF
Topic: ESP32-CAM Rebooting when face detection is activated
Replies: 11
Views: 10124

Re: ESP32-CAM Rebooting when face detection is activated

It doesn't sound like it is likely the problem in this case but always worth checking that the 5 volt supply to the camera is good. I have found that it needs a very good power supply and if it is not happy with it you can get all sorts of weird errors, behaviour, reboots etc.. I have often forgot t...