Search found 95 matches

by HermannSW
Tue Jul 23, 2019 6:14 am
Forum: ESP32 Arduino
Topic: esp32 dev board not connecting to wifi
Replies: 6
Views: 4972

Re: esp32 dev board not connecting to wifi

I noticed similar, whenever I flashed [F]CameraWebServer to ESP32-CAM module, or powered on the module, Wifi nearly never connects on first reset (with Serial Monitor started before), and almost always connects on second reset ...
by HermannSW
Mon Jul 22, 2019 12:41 pm
Forum: ESP32 Arduino
Topic: ESP32 CAM for FPV and RC
Replies: 4
Views: 3114

Re: ESP32 CAM for FPV and RC

@HermannSW where did you buy the fast thing? 22$ with free shipping at aliexpress: https://www.aliexpress.com/wholesale?SearchText=tank+robot+Caterpillar It looks fast, especially if doing U-turn at full speed by just changing direction of one motor but keep its speed: https://stamm-wilbrandt.de/en...
by HermannSW
Sat Jul 20, 2019 2:54 pm
Forum: ESP32 Arduino
Topic: ESP32 CAM for FPV and RC
Replies: 4
Views: 3114

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: 33
Views: 11302

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: 12
Views: 7819

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: 7402

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: 1941

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: 12
Views: 7819

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: 33
Views: 11302

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: 33
Views: 11302

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...

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