Cheap WiFi Webcam: ESP32 + OV2640 camera
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I've also considered getting an esp cam. One of the top reasons being that it's basically just a controller and powering it on and off randomly should not be much of a worry the way it is with the more of a computer class RPi type boards.
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My camera is only 2MP so it'll suck at really showing me how good a layer is. At most it will be used to detect spaghetti prints while I am away. With that in mind, it's more convenient for me to mount it on the top front corner of my printer looking downwards. If I wanted a good timelapse, I actually have a clip on GoPro mount that has a flexible arm.
You'll be happy to know that the ESP cam connects insanely fast. The source code I linked only supports one WiFi access point, but it should be trivial to support multiple by doing a scan and checking against a list.
But obviously if your Duet and ESP are not on the same network then you might not get the image.
I actually recently got a portable travel router that can extend a network but under its own name, it also doubles as a network drive, and it has a switch on the side that's configured to turn ON/OFF my VPN, cost about $60 and runs off USB 5V power. It's nice to have when you are doing IoT stuff.
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I spent the day adding a USB port panel to my printer, and mounted my camera using two pieces of plastic and a section of flexible coolant hose
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Just ordered an ESP32 + camera.
Has anyone got a printable case that could be mounted on V profile? -
@frank26080115 said in Cheap WiFi Webcam: ESP32 + OV2640 camera:
cost about $20 on Prime 1-day
Frank, can you post an amazon link? I see there many similar cameras and would like to make sure its exactly the same as yours.
Also, do you see still images or actual video?
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@zapta said in Cheap WiFi Webcam: ESP32 + OV2640 camera:
Frank, can you post an amazon link? I see there many similar cameras and would like to make sure its exactly the same as yours.
Also, do you see still images or actual video?
https://smile.amazon.com/gp/product/B07DVD4J7N/
both still images and actual video. http://1.2.3.4/ for video, http://1.2.3.4/jpg for still image
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Thanks Frank. I will give it a try. I also have a Wize V2 on order. Will see what's inside. Hopefully can put the relevant parts in a smaller case.
One of the reviews of the ESP32/OV2640 says that the video is limited to 800x600 by the ESP32's speed. Is it so?
(I don't expect to evaluate layer quality from the video, just to verify that things are still going well more or less)
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appjaws 11 May 2019, 14:50
I have installed a M5Cam as per your instructions but the video is upside down.
I'm sure there is a way to rotate the video but I haven't been able to find an answer.
I have my camera the same way up as yours Can you help please?
kind regards
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Hi...this works good but not always. I want to use mine as a timelapse camera and have been looking into extreme low light (starlight ideally)
and was hoping several second exposures would be possible, I came to the conclusion I needed that FREX pin broken out.
Came to the conclusion that this is probably not the best sensor for this funtionality. -
I tried to use the example from https://github.com/frank26080115/HephaestusConfig/blob/master/other/esp32cam_sketchbook.zip but when I compile I get an error. Has someone the same problem?
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esp32-cam is ~4$ in PRC with free delivery
I'm looking for the cheapest wired solution (I need ~20 of them) and cheapest I could find is itead camera based on GOKE GK7102s chip. No full open source firmware but there are some hacks available... I think I'll be going with rpi3b+ and rpi camera .. waiting for quote for 20 of them to see if it's going to break my budget or not but after few months of research I think this is going to be the best option
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@arhi said in Cheap WiFi Webcam: ESP32 + OV2640 camera:
cheapest wired solution
does esp32 + enc26j80 (from memory) fit the bill? or even esp with SLIP ?
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@bearer said in Cheap WiFi Webcam: ESP32 + OV2640 camera:
@arhi said in Cheap WiFi Webcam: ESP32 + OV2640 camera:
cheapest wired solution
does esp32 + enc26j80 (from memory) fit the bill? or even esp with SLIP ?
dunno what's SLIP ?
I'm testing ESP32-CAM with ENC26J80 but having some issues getting it work for (for now)
trying to find solution that's good & not too expensive... I had very high hopes for itead camera as most of their stuff is open source or if not open sourced by them open source by "some crazy dude on github"
but .. no .. (still not gave up on them, testing the latest hack I found trying to rebuild the whole linux to put mine there ... maybe there is a way to have everything custom except blob for camera but that I can deal with, major problem I have is I once already got my lan intruded trough PRC camera that I could not update - that's why I wanna go wired only we'll see)difference between rpi1 and rpi3 in price are minor while huge in performance so with rpi3 I can then offload a whole bunch of stuff from zoneminder to rpi.. and I can use all those rpi's in network for bunch of other stuff I normally use rpi's so the camera's can also be a cluster nodes
.. so money well spent ..we'll see if I manage to get esp32-cam to work with enc that's 7$ total for the whole device, that's cheaper than the power supply for the pi
what's that slip thing?
p.s. I have also W5500 here that I will test if I give up on ENC
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@arhi said in Cheap WiFi Webcam: ESP32 + OV2640 camera:
dunno what's SLIP
modem without the modem bit
serial 1/3rd down the page https://www.tldp.org/HOWTO/NET3-4-HOWTO-7.htmlI've had success with the enc28j60 for both esp and (antique) pi's but the speed is in the low hundreds kb/s range.
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@bearer that's kinda slow, I'd like to have a video stream worth watching
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@arhi said in Cheap WiFi Webcam: ESP32 + OV2640 camera:
@bearer that's kinda slow, I'd like to have a video stream worth watching
it is slow, but the resolution of the espcam isn't something to write home about either, so might work - both options.
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@bearer enc work is under way so I'll try to get it to work, also w5500 (I think that one is used on duet) so we'll see how it will behave
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@bearer said in Cheap WiFi Webcam: ESP32 + OV2640 camera:
does esp32 + enc26j80 (from memory) fit the bill? or even esp with SLIP ?
Looks like I need to write Ethernet library myself (modify existing one). They use "SPI" object and that's not available on esp32-cam, those pins are attached to the camera module. There should be HSPI available but for that I need to do a lot of search/replace + some initialization to use HSPI port on the esp .. we'll see .. should be simple but..
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hmm, bummer, only tried it with the esp8266 eons ago.
i think i've seen some nutjob implement ethernet with just a line driver and some magnetics
https://www.youtube.com/watch?v=XKnyAYKP434 -
@bearer interesting project but dunno if any of my switches support 10baseT and since this is for 8266 again need to rewrite it to fit esp32 .. I'll see how quickly I can fork the Ethernet library to make it use that HSPI that is supposedly available on esp32-cam (actually, first I'll just see if I can output anything on esp32-can via that hspi before I start editing that library).. we'll see .. W5500 is el cheapo, could be a good fit here.. and having both wifi and eth in a camera with sd card could be useful, even without sdcard..
I was hoping I will be able to find an open source camera out there for 20$ or under but
