ESP8266 Community Forum

- Wed Nov 29, 2017 4:22 am #72157

we know that esp8266 is a very good uC. For example, I found many app and libraries that does fantastic things but I still didn't find a way to capture USB signal's from USB cam like a endoscope cam. I think is possible but I still not know to do it.

I totally agree with you about the powerfulness of the ESP8266's core and its interesting libraries, and even me, I wished to switch to this core for future designs, but it is notorious that despite of its capabilities, there are limitations, perhaps more due to how its libraries were built. Namely, it is needed to periodically re-run certain wi-fi functions at very short intervals. That timming constraints do not impede the use of peripherals which have fast response (Serial, I/O, etc...) but streaming a video with a uC with no hardware support to USB would lock the wifi routines. Perhaps you are not aware, but these wifi routines have a serious issues concerning to watchdog reset whenever they are not called within determined (short) period.

"part of the world that you live in, you are the part that you're giving" - Renaissance

- Wed Nov 29, 2017 6:58 am #72161

we know that esp8266 is a very good uC. For example, I found many app and libraries that does fantastic things but I still didn't find a way to capture USB signal's from USB cam like a endoscope cam. I think is possible but I still not know to do it.

I totally agree with you about the powerfulness of the ESP8266's core and its interesting libraries, and even me, I wished to switch to this core for future designs, but it is notorious that despite of its capabilities, there are limitations, perhaps more due to how its libraries were built. Namely, it is needed to periodically re-run certain wi-fi functions at very short intervals. That timming constraints do not impede the use of peripherals which have fast response (Serial, I/O, etc...) but streaming a video with a uC with no hardware support to USB would lock the wifi routines. Perhaps you are not aware, but these wifi routines have a serious issues concerning to watchdog reset whenever they are not called within determined (short) period.

Tks for replying!
I work with esp8266 from a long time (years) in this project, like posted before... I am not a specialist, I know about many limitations, but I continue to look for a light in the end of tunnel.
Each day I better something here, dicover other thing, and the project continue's!
I have made at the moment 2 boards using esp8266. The main controller will be upgraded to esp32 asap. But I have around 10 board's to still develop. 2 of this are web camera and other mp3 sound decoder. Most boards I have space limitations of 18mmx100mm on the max size.

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Ricardo B. Pacheco

- Mon Apr 02, 2018 7:36 am #75076 A bit late to the party, but...

If you have 1.5cm internal width and height available then an alternative might be to leave the esp to get on with its day job, and just add in a miniature FPV camera with transmitter.
The one in the link is only 1.5cm square plus about 3.5cm of bendy aerial wire.
If you can't get a suitable POV by pointing the lens forward, you could point it vertical into a 45 degree mirrored reflector placed to look through the window (same as the endoscope right-angle attachment).

This one is 5.8Gz so you will obviously need a corresponding receiver or monitor.
https://www.gearbest.com/camera/pp_832986.html
Product size (L x W x H): 1.50 x 1.50 x 5.00 cm / 0.59 x 0.59 x 1.97 inches

But 2.4Gz wifi equivalents are available which can be received direct to mobile phone, although you'll need to track it down for yourself.

Where to get modules?

https://www.banggood.com/custlink/KvGGhGF4wG