ESP32 Cam by Espressif
Firmware
- ESP32 Cam EZB Version 7 (updated 2024-12-18)
- ESP32 Cam UART Version 3 (updated 2022-02-13)
- ESP32 Cam Arduino Relay Version 2 (updated 2024-12-18)
The Esp32 Cam is an affordable WiFi module with few I/O and streaming webcam capability. Adding this firmware to an esp32 cam, the WiFi module will become an EZB that ARC can connect to stream the camera and control gpio. Check below for the ports that work and don’t interfere with the camera.
*Note: On the AI Thinker edition, servos work on D2, D12, D13, D14, and D15. However, you will need to try your edition/model to see if those pins work. If not, try ones that do
*Note: It’s important to note that while the esp32 cam has an ezb firmware, some models share the same gpio in the pinout as the camera uses. This allows the camera to work but prevents the esp32 from being used as an ezb io controller due to their short-sighted design flaws.
WiFi Modes
Two WiFi modes can be configured in the code. They are AP Mode, which turns the ESP32 Cam into a WiFi server your computer connects directly to. The other mode is Client Mode, in which the ESP32 Cam connects to your network router. Get the IP Address and connection status information by viewing the Serial Monitor set to 115,200 in Arduino IDE.
Port Configuration
The pins in ARC are labeled D0 - D23. The ESP32 has GPIO labeled pins, which are not in any ordered sequence. This translation chart below shows the mapping of the ESP GPIO to ARC Dx pins. All Dx ports are mapped to GPIOx ports. So GPIO1 is D1, and GPIO2 is D2, etc.
What esp32cam do you use? That’ll be worth mentioning so it adds context to the list of ports you’re providing
this is the camera I purchased;
https://www.amazon.com/gp/product/B07T1PG77D/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
that looks the same as mine. Strange
Nink, what version is yours? Does it look the same?
I found some Arduino code that makes a webserver, form serial monitor I get 192.168.1.17, put it in a browser, I get this:
when I click start stream on bottom, I get the camera's video, also I can put this in my Iphone's browser - I can see the camera video on the phoneIf you want the code just let me know
I am new in this, and trying to setup ESP32 Cam for ARC use. There is problem during compilation of ESP32 Cam firmware in Arduino IDE, on the end I get lot of error messages
Arduino: 1.8.19 (Windows 10), Board: "AI Thinker ESP32-CAM, 240MHz (WiFi/BT), QIO, 80MHz"
C:\EZ-ESP32-CAM\EZ-ESP32-CAM.ino:119:24: warning: passing NULL to non-pointer argument 1 of 'WiFiClient::WiFiClient(int)' [-Wconversion-null]
WiFiClient _CLIENT = NULL;
C:\EZ-ESP32-CAM\EZ-ESP32-CAM.ino:120:27: warning: passing NULL to non-pointer argument 1 of 'WiFiClient::WiFiClient(int)' [-Wconversion-null]
WiFiClient _CLIENTCAM = NULL;
C:\EZ-ESP32-CAM\EZ-ESP32-CAM.ino: In function 'void doEZProtocol()':
EZ-ESP32-CAM:755:49: error: call of overloaded 'analogWrite(byte&, long int)' is ambiguous
In file included from C:\Users\kirop\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.2\cores\esp32/Arduino.h:36,
C:\Users\kirop\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.2\cores\esp32/esp32-hal.h:93:6: note: candidate: 'void analogWrite(uint8_t, int)'
void analogWrite(uint8_t pin, int value);
In file included from C:\EZ-ESP32-CAM\EZ-ESP32-CAM.ino:16:
C:\EZ-ESP32-CAM\analogWrite.h:9:8: note: candidate: 'void analogWrite(uint8_t, uint16_t)'
void analogWrite( uint8_t APin, uint16_t AValue );
Multiple libraries were found for "WiFi.h"
Used: C:\Users\kirop\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.2\libraries\WiFi
Not used: C:\Program Files (x86)\Arduino\libraries\WiFi
exit status 1
call of overloaded 'analogWrite(byte&, long int)' is ambiguous
This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.
Hey @DJ Just downloaded this version and the serial monitor isn't showing my IP and ezb scanner can't find so had to login to my router (and that's fine) what is strange when I connect and disconect it shows the wrong IP of the host it shows an 80.163.252.XXX address. I removed the last digits cause not sure what it is but its not me and it appears to be Denmark?
16:26:24.857 -> Client ezb connected from 80.163.252.XXX 16:26:24.857 -> EZB Client disconnected 16:26:24.898 -> Waiting for ezb client... 16:27:43.922 -> Client ezb connected from 80.163.252.XXX 16:28:15.861 -> EZB Client disconnected 16:28:15.908 -> Waiting for ezb client... 16:28:54.883 -> Client ezb connected from 80.163.252.XXX 16:29:20.268 -> Client cam connected from 192.168.72.60
I can not compile the firmware in arduino and receive below error. Any advice on this?
call of overloaded 'analogWrite(byte&, long int)' is ambiguous
analogWrite(port, map(pos, 0, 100, 0, 255));
Sometimes arduino ide’s change some things. Usually this error pops up a lot. You will need to cast the value to a byte (byte). Not sure why some ide’s do that. But I guess that’s why it’s free