Search found 95 matches

by HermannSW
Tue Jul 09, 2019 8:22 am
Forum: ESP32 Arduino
Topic: ESP32Cam and Servo Control
Replies: 13
Views: 7841

Re: ESP32Cam and Servo Control

... I'd like to use the ESP32Cam to be able to control it's own Pan/Tilt mount that ... Different camera (Raspberry camera), and only tilt calibration (my camera has no Pan). But the automatic calibration code in this posting might be interesting/useful to you with ESP32-CAM as well: https://www.ra...
by HermannSW
Mon Jul 08, 2019 9:24 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 17456

Re: ESP32-CAM ov2640 exposure control/FREX mode

Today I finished "shots" and "5shots" implementation in addition to "shot" in doit: https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter/commit/15e8ad7923e0a01e6d4b15ff815cb50d5bff3655 I tested that all three effects work on GPIO4 (connected to builtin ESP32-CAM flash light) as ...
by HermannSW
Sun Jul 07, 2019 9:01 am
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 17456

Re: ESP32-CAM ov2640 exposure control/FREX mode

I determined that VSYNC signal (GPIO25 per camera_pins.h) is exposed on pin18 of ov2640 flat ribbon cable connector. I did take a logic analyzer capture of CIF mode streaming (400x296) because that was discussed in datasheet. Again I used Raspberry camera as big magnifying glass (HDMI monitor) in or...
by HermannSW
Sat Jul 06, 2019 7:48 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 17456

Re: ESP32-CAM ov2640 exposure control/FREX mode

I am baffled, just played with the last version of FCameraWebServer and reduced builtin camera flash time to only 50µs: https://stamm-wilbrandt.de/en/forum/ov2640.global_shutter_done_menu.png I took 800x600 frames as before and got this frame without haveing changed code nor having done anything wit...
by HermannSW
Sat Jul 06, 2019 6:09 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 17456

Re: ESP32-CAM ov2640 exposure control/FREX mode

I learned how to pass vsync pin define from FCameraWebServer.ino to app_httpd.cpp, just store into global variable. And I eliminated need for "Serial.printf()" of count variable, just declaring it volatile prevents compiler optimizing code away. Finally I made sure that now more than one full frame ...
by HermannSW
Thu Jul 04, 2019 7:08 pm
Forum: Showcase
Topic: ESP32 Board with solar, battery, LoRaWAN and GPS
Replies: 2
Views: 2473

Re: ESP32 Board with solar, battery, LoRaWAN and GPS

No need for a battery if you are good with hand generator -- but you are not allowed to stop ;-)
https://www.youtube.com/watch?v=bMX-IVWCnmo
by HermannSW
Tue Jul 02, 2019 10:40 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 17456

Re: ESP32-CAM ov2640 exposure control/FREX mode

Added and wired in new "Wait for VSYNC" toggle: https://github.com/Hermann-SW/Raspberry_v1_camera_global_external_shutter/commit/45d6f36b576b75bba79cee3b7c5160a24bdd7851 Gives recreatable results most of the time -- will have to understand why not always. I was victim of "compiler optimizing away st...
by HermannSW
Tue Jul 02, 2019 9:29 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 17456

Re: ESP32-CAM ov2640 exposure control/FREX mode

Any try to attach an ISR (interrupt service routine) to GPIO25 (VSYNC_GPIO_NUM for ESP32-CAM module) resulted in FCameraWebserver starting, connecting to WLAN and emitting connected messages to Serial, and then immediately rebooting. So I ended up doing poor mans copy of GPIO25 to GPIO16 in order to...
by HermannSW
Mon Jul 01, 2019 9:01 pm
Forum: ESP32 Arduino
Topic: Adding features to Examples->ESP32->Camera->CameraWebServer
Replies: 4
Views: 15067

Re: Adding features to Examples->ESP32->Camera->CameraWebServer

The problems were solved, and description of the changes as well as first rpm determination for fast rotating mini drone propeller can be found in this posting: https://www.esp32.com/viewtopic.php?f=19&t=11126&p=45780#p45780 Async await was used for synchronous wait in index.html browser JS. app_htt...
by HermannSW
Mon Jul 01, 2019 8:40 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 17456

Re: ESP32-CAM ov2640 exposure control/FREX mode

I had the GUI and did know how to do the "shot" captures based on streaming video and not based on still images yesterday: https://www.esp32.com/viewtopic.php?f=19&t=11190&p=45710#p45710 Today I solved the issues left, biggest was to realize that doing "window.stop" to stop MJPEG streaming did show ...

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