Peter Kern asked 8 months ago
Hello Sara,
I have the problem, that I can’t get UXGA resolution with the telegram bot.
I loaded the ESP32-CAM_WebServer.ino and have UXGA resolution.
With Module 3 Unit 4 no problem with SVGA (s->set_framesize(s, FRAMESIZE_SVGA);)
Changing to (s->set_framesize(s, FRAMESIZE_UVGA);) I get the following errors using “/photo”:
Date: Fri, 15 Mar 2024 15:00:44 GMT
Content-Type: text/html
Content-Length: 157
Connection: close
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Access-Control-Allow-Origin: *
Access-Control-Expose-Headers: Content-Length,Content-Type,Date,Server,Connection
<html>
<head><title>400 Bad Request</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<hr><center>nginx/1.18.0</center>
</body>
</html>
What do I wrong?
Thanks, Peter
Sara Santos Staff answered 8 months ago
Hi.
I’m not sure. But I think it’s related to the size of the picture.
A picture with UVGA format will occupy more space. But, I’m not sure how that interferes with the request. Maybe the ESP32 cannot handle sending a big image?? I’m not sure…
Regards,
Sara
Peter Kern answered 8 months ago
Hello Sara,
if I replace
//if (c == ‘\n’)
//{
// if (getAll.length()==0) state=true;
// getAll = “”;
//}
//else if (c != ‘\r’)
// getAll += String(c);
//if (state==true) getBody += String(c);
//startTimer = millis();
with (from https://github.com/halfstudents/Sharing-ESP32S3-CAM-Pictures-On-Telegram/blob/main/ESP32_cam_telegram.zip)
if(state==true) getBody += String(c);
if(c == ‘\n’)
{
if(getAll.length()==0) state=true;
getAll = “”;
}
elseif(c != ‘\r’)
getAll += String(c);
startTimer = millis();
I get UXVA Resolution, but only with config.jpeg_quality = 44; // or lower
The size is 64KB.
I read, that with Telegram free, you can transmit pictures up to 2MB.
Greetings, Peter
Sara Santos Staff answered 8 months ago
Yes. Telegram can handle the picture, but maybe the request you’re making with the ESP32 doesn’t….
This kind of issue is very tricky to debug…. I’m not sure how to change the code to send bigger pictures…
Regards,
Sara