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Tag Archive for arduinoesp32arduino-esp32

WebServer vs esp_http_server performance

I’m trying to make a small web server for my ESP32 using the Arduino environment. I would like to switch from Arduino’s WebServer to ESP-IDF’s esp_http_server because it has useful features like websockets and connection keep-alive. However I noticed that esp_http_server takes longer to respond to requests, which surprised me as it is the standard server in the ESP-IDF.

ESP32-CAM Cropping a picture

I am currently facing a problem in a domain which is not mine.
I am using an ESP32-cam and make it take a picture and save it on a microSD. I need to make it crop the taken picture into 5 differents parts. Saddly, I am stuck because the cropped picture I create is like “bugged”.
bugged picture
It may be a format problem or something like that but I really don’t know. If someone can tell me what is my mistake I would be very grateful.

ESP32-CAM Cropping a picture

I am currently facing a problem in a domain which is not mine.
I am using an ESP32-cam and make it take a picture and save it on a microSD. I need to make it crop the taken picture into 5 differents parts. Saddly, I am stuck because the cropped picture I create is like “bugged”.
bugged picture
It may be a format problem or something like that but I really don’t know. If someone can tell me what is my mistake I would be very grateful.

Problems with ESP32 WROOM 32U, SIMCOM A7670 and LoRa cores

Description:
My current project uses the two cores of the ESP32 WROOM 32U to run two tasks in parallel: one for LoRa communication, where I receive text strings, and another for connection to an MQTT server via a SIMCOM modem that connects to 4G using AT commands. I faced two main problems: