Search found 90 matches

by HermannSW
Sun Jul 14, 2019 8:12 pm
Forum: ESP32 Arduino
Topic: Pinchange interrupt during eeprom write -> crash.
Replies: 5
Views: 763

Re: Pinchange interrupt during eeprom write -> crash.

Sending broadcast video frames from esp32cam to raspberry? How-to? Take Pi ZeroW or any other Pi with Wireless and transfer via Wifi. Raspberry PIs run Raspbian, a Linux variant derived from Debian. Only the Zero[W] is (1GHz) single core, all other PIs are quad core (1.2GHz or 1.4GHz). Which aliexp...
by HermannSW
Sun Jul 14, 2019 5:11 pm
Forum: ESP32 Arduino
Topic: Pinchange interrupt during eeprom write -> crash.
Replies: 5
Views: 763

Re: Pinchange interrupt during eeprom write -> crash.

I need a sub-500g drone because of local regulations. My old F330 frame is 700g. Local regulations exist in Germany too; I had four Eachine E52 drones, lost one in a high tree. Those drones wheigh less than 100g, and in Germany drones <250g don't even need a fireproof ID label. Since the E52 does h...
by HermannSW
Sun Jul 14, 2019 6:54 am
Forum: ESP32 Arduino
Topic: Pinchange interrupt during eeprom write -> crash.
Replies: 5
Views: 763

Re: Pinchange interrupt during eeprom write -> crash.

👍 You reference a previous non-external RC video in your github page as well. I added github repo link to the new youtube video as comment: https://github.com/PepeTheFroggie/EspCopter32 Nice diagram. Do you plan to replace the ESP32 used with ESP32-CAM that you used in your "ESP32 CAM for FPV and RC...
by HermannSW
Sat Jul 13, 2019 11:08 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 7078

Re: ESP32-CAM ov2640 exposure control/FREX mode

I did use "shots" tool again with these settings: ...,"ges":2,"ges_gpio":0,"ges_repeat":3,"ges_vsync":0,"ges_offset":190,"ges_on":100,"ges_off":1000} This time I had the exact same scene to capture (only the hand moved slightly between the two captured frames). Depending on when I did press "doit" b...
by HermannSW
Sat Jul 13, 2019 3:51 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 7078

Re: ESP32-CAM ov2640 exposure control/FREX mode

Just realized that the ESP32-CAM module I most often worked with did have some heat issue with the flash and got black: https://stamm-wilbrandt.de/en/forum/IMG_130719_171925.part.jpg Luckily it was recoverable with a simple knife: https://stamm-wilbrandt.de/en/forum/IMG_130719_174414.part.jpg I am p...
by HermannSW
Fri Jul 12, 2019 9:08 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 7078

Re: ESP32-CAM ov2640 exposure control/FREX mode

To get an idea of why the camera behaves as it does, decoding the I2C traffic between ESP32 and ov2640 sensor would be beneficial. I did start my work on enabling high framerate video capturing (from 90fps/120fps for v1/v2 Raspberry camera to 750fps/1007fps) with doing exactly that. I did solder big...
by HermannSW
Fri Jul 12, 2019 4:18 pm
Forum: ESP32 Arduino
Topic: Measuring power consumption
Replies: 5
Views: 1219

Re: Measuring power consumption

That is an interesting battery, exactly delivering the absolute maximal rating input voltage to the ESP32:
https://www.espressif.com/sites/default ... df#page=40

I had to use step-down converter for 3.7V lipos (they show typically even 4.2V when fully loaded).
by HermannSW
Fri Jul 12, 2019 4:05 pm
Forum: ESP32 Arduino
Topic: ESP32Cam and Servo Control
Replies: 10
Views: 2525

Re: ESP32Cam and Servo Control

You need a separate power source for the servos: https://forum.arduino.cc/index.php?topic=468902.msg3211401#msg3211401 Don't try to power servos or motors from the 5V output of an Arduino. You will damage the Arduino if you do so. Use a separate power supply for the servos, and connect the grounds t...
by HermannSW
Thu Jul 11, 2019 1:28 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 7078

Re: ESP32-CAM ov2640 exposure control/FREX mode

Wow, it took some tries, but I was able to get several global external shutter captures after I completely removed the cardboard box covering the scene👍 So it is not darkness that determines rolling vs. global shutter capturing ... (in this frame you can see the ESP32-CAM module builtin flash light ...
by HermannSW
Thu Jul 11, 2019 12:40 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM ov2640 exposure control/FREX mode
Replies: 33
Views: 7078

Re: ESP32-CAM ov2640 exposure control/FREX mode

My working hypothesis was that global reset of all sensor lines needed for global external shutter frame captures was somehow triggered by a very dark image. So I just opened the cardboard box providing the darkness more and more, until it was open 10cm high on one side: https://stamm-wilbrandt.de/e...

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