Search found 83 matches

by HermannSW
Sat Jul 20, 2019 2:54 pm
Forum: ESP32 Arduino
Topic: ESP32 CAM for FPV and RC
Replies: 2
Views: 176

Re: ESP32 CAM for FPV and RC

Nice project. I have three of the left type 20$ caterpillar robot platforms, the displayed one in state as received. Plan was to add ESP32-CAM with (big) lipo and try your project for RC and FPV: https://stamm-wilbrandt.de/en/forum/IMG_200719_162011.jpg Recently I received a 7$ toy line following ta...
by HermannSW
Thu Jul 18, 2019 9:05 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 30
Views: 2018

Re: ESP32-CAM ov2640 exposure control/FREX mode

I did new frame capture, with mostly same settings, but this time with "Wait for next VSYNC" enabled: https://stamm-wilbrandt.de/en/forum/ov2640.global_shutter_done.shots.open_box.4_menu.png This was the captured frame after I clicked "doit" button: https://stamm-wilbrandt.de/en/forum/ov2640.global_...
by HermannSW
Thu Jul 18, 2019 5:03 pm
Forum: ESP32 Arduino
Topic: ESP32-Cam and SD Card
Replies: 7
Views: 232

Re: ESP32-Cam and SD Card

Hi, in case you really cannot use SD card with your two servos and camera, then you might just write to flash instead (SPIFFS). See "Install ESP32 Filesystem Uploader in Arduino IDE" on how you can upload files: https://randomnerdtutorials.com/install-esp32-filesystem-uploader-arduino-ide/ But you c...
by HermannSW
Thu Jul 18, 2019 12:27 pm
Forum: ESP32 Arduino
Topic: ESP32 CAM direct access to image data
Replies: 11
Views: 1130

Re: ESP32 CAM direct access to image data

But I cannot find the code for dl_matrix3du_alloc anywhere and whilst the calling context makes clear that parameters 2 & 3 are width & height I do not know what parms 1 & 4 are. From: https://github.com/espressif/esp-face/blob/master/lib/include/dl_lib_matrix3d.h#L68 ... /* * @brief Allocate a 3D ...
by HermannSW
Thu Jul 18, 2019 5:47 am
Forum: ESP32 Arduino
Topic: Using Timer Interrupt and Reload Timer
Replies: 1
Views: 54

Re: Using Timer Interrupt and Reload Timer

I think "timerRestart()" is what you want.
But you need this fix to get it working correctly:
https://github.com/espressif/arduino-es ... -507039927
by HermannSW
Wed Jul 17, 2019 8:40 pm
Forum: ESP32 Arduino
Topic: ESP32-Cam and SD Card
Replies: 7
Views: 232

Re: ESP32-Cam and SD Card

Interesting, please test with another ESP32-CAM module, according camera_pins.h GPIO12 and GPIO16 are not used:

Code: Select all

$ grep 37 camera_pins.h 
#define Y8_GPIO_NUM      37
$ grep 16 camera_pins.h 
$ grep 12 camera_pins.h 
$ 
by HermannSW
Wed Jul 17, 2019 7:34 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 30
Views: 2018

Re: ESP32-CAM ov2640 exposure control/FREX mode

I looked into many (preliminary) ov2640 datasheets on the web, and all show this same SVGA Frame Timing diagram, which is inconsistent: https://stamm-wilbrandt.de/en/forum/ov2640.svga.timing.png Diagram says that t_LINE is 1190 t_p, and summing up all components gives 866416 t_p. But 672×t_LINE is 7...
by HermannSW
Wed Jul 17, 2019 6:47 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 30
Views: 2018

Re: ESP32-CAM ov2640 exposure control/FREX mode

I think I made a good capture, and a good observation as well. This was the global shutter setup, 2 shots, 50µs flashes, 950µs apart. And offset 170ms: ...,"flash":0,"ges":2,"ges_gpio":0,"ges_repeat":2,"ges_vsync":0,"ges_offset":170,"ges_on":50,"ges_off":950} The observation I made is, that when pre...
by HermannSW
Wed Jul 17, 2019 2:36 pm
Forum: ESP32 Arduino
Topic: Esp32 CAM sending image buffer over TCP
Replies: 2
Views: 142

Re: Esp32 CAM sending image buffer over TCP

The Serial prints are useful with Serial monitor timestamps: 16:16:08.410 -> Camera capture send before 16:16:08.444 -> Camera capture send after 16:16:08.444 -> JPG: 22291B 174ms 16:16:09.973 -> Camera capture send before 16:16:10.007 -> Camera capture send after 16:16:10.007 -> JPG: 21786B 127ms P...
by HermannSW
Wed Jul 17, 2019 1:28 pm
Forum: ESP32 Arduino
Topic: Esp32 CAM sending image buffer over TCP
Replies: 2
Views: 142

Re: Esp32 CAM sending image buffer over TCP

CameraWebServer app_httpd.cpp does send the whole framebuffer. Add serial monitor output like below and enable output of timestamps in console. Then you can measure what speed that method of framebuffer transfer does: Serial.println("Camera capture send before"); res = httpd_resp_send(req, (const ch...

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