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Forum Index : Microcontroller and PC projects : Introducing PicoVision
| Author | Message | ||||
| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 9115 |
Actually just an extra bitbang command coming soon BITBANG CAMERA OPEN XCLKpin, PCLKpin, HREFpin, VSYNCpin, RESETpin, DATA0pin BITBANG CAMERA CAPTURE [scale, [x , y]] BITBANG CAMERA REGISTER reg%, data% BITBANG CAMERA TEST tnum BITBANG CAMERA CLOSE This uses the cheapest version of the OV7670 camera e.g. and captures a 160x120 RGB565 image which it then writes to the screen. The colour rendition is tolerable (much better than it appears in the photo) but could be improved further by tuning the various camera registers. Update rate is 7FPS onto the display at 1:1 scale and 5FPS scaled to 320x240. The camera is set up using an I2C connection which must be defined using OPTION SYSTEM I2C. In all 15 pins are used including the I2C connection. DATA0pin defines the start of a range of 8 contiguous pins (e.g.GP0 - GP7). Pullups on the I2C pins are essential. I used 2K7 resistors.   If there is serious interest I will code up a basic movement detection capability Edited 2023-11-05 03:42 by matherp |
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stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
far out! |
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| gadgetjack Senior Member  Joined: 15/07/2016 Location: United StatesPosts: 142 |
I am impressed!!! |
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karlelch Senior Member Joined: 30/10/2014 Location: GermanyPosts: 172 |
Nice!! |
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bigmik Guru Joined: 20/06/2011 Location: AustraliaPosts: 2914 |
Hi Peter, That looks pretty cool. I have a couple of questions if you can assist. What is the focal range of the camera, or can it be adjusted? The specs (well the headline on the listing) states 640x480 resolution, what is the bottleneck with getting that higher resolution? I see this, for my applications, better as a remote sender to send a static image rather than video. For instance, I have 2 applications already but both only need a snapshot, static image, and will need the data for the image sent over a network, say hc12, and displayed on a remote screen. One is a small unit in the letterbox to see if there is mail to collect, this needs a short (say 10cm) focal length, the other is on my porch, I have 2 security cameras but there is a blind spot where the postie often leaves parcels, it would be good to see this spot, on demand, this would need a focal length of say 2m. Anyway, I realise that this is still early days. I applaud your great work on this as well as ‘mites in general. Regards, Mick (the big one) . Mick's uMite Stuff can be found >>> HERE (Kindly hosted by Dontronics) <<< |
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| Amnesie Guru Joined: 30/06/2020 Location: GermanyPosts: 396 |
Wow, that's impressive! But how does it work? I mean is this another iteration of Basic for the Picos, like WebMite,PicoMiteVGA etc? Is this somehow possible to use a VGA monitor? Greetings Daniel |
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Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1344 |
yes it is impressive and if it will work on the pico it should work on the CMM2 aswell and if it can do vga prepare for some interesting wildlife pic's coming up in a while. Heading up to Mt Isa for a shutdown tomorrow so in the evening I'll be reading reading and reading all about this CMM2 as it will be here when I get home at the end of the month |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2135 |
If it is a fixed focus lens all is not lost. Long ago helped the local National Park set up some wildlife cameras that had fixed focus lenses. These cameras were intended for large animals and so were focused in the distance but they were interested in small animals and birds close up. The solution was to take the lenses out of reading glasses and tape them over the camera lens. They got snaps of large Bobuck Possum small Brushtail Phascogale and tiny Agile Antechinus as well as birds of all sizes. |
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Plasmamac Guru Joined: 31/01/2019 Location: GermanyPosts: 554 |
Will it run on wlan pico to create a webcam? Plasma |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9115 |
The code is just a new command for the standard Pico variants The lens screw in and out for focus and I believe different lens are available (standard 12mm thread) It is not possible to support any resolution > 160x120 due to the limited memory on the RP2040. The pixels are read into a buffer at 3Mbytes/second It should work on the web version (untested) but it does have to disable interrupts while capturing the picture which may give an issue I haven't included on the VGA version thus far as the colour pallet is so limited (RGB121) I've also now got motion detection working in principal - just need to work out how best to package it in MMBasic for ease of use |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9115 |
OK I'm happy with this subject to any useful comments or suggestions BITBANG CAMERA CHANGE image%(),change! [,scale [,x ,y]] image% is an array of size 160x120 bytes (DIM image%(160,120/8-1) On calling the command the first time it holds a packed 8-bit greyscale image. The change! variable returns the percentage the image has changed from the previous time the command was called. Optionally if "scale" is set then the image delta is output to the screen i.e. the difference between the previous image and this one. The new command makes it trivially easy to check for and log activity in the camera's field of view Example program |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
Is there a IR filter you could "peel off" and change the colours to make a "thermal camera"? |
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| phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 2135 |
Thermal cameras use a different sensor material sensitive to long wave infrared. They also use a black germanium lens as glass and plastic block long wave infrared. |
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| Amnesie Guru Joined: 30/06/2020 Location: GermanyPosts: 396 |
But what you can do, if you remove the IR filter element of the camera, you get a really sensitive night vision camera, which - additionaly to IR LED spots - can make a cool night vision camera. Greeings Daniel |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
Thermal imaging cameras are expensive. Just thought a cheaper option. |
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| Amnesie Guru Joined: 30/06/2020 Location: GermanyPosts: 396 |
@ stanleyella but there is a cheap thermal imaging cam, take a look at the "AMG8833". It is just 8x8 but you can read them in basic and use it as a "human presence detector" etc. Greetings Daniel |
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| stanleyella Guru Joined: 25/06/2022 Location: United KingdomPosts: 2129 |
I thought of using servos and a cheap laser thermometer sensor and found someone had similar thoughts years ago. I was thinking a tiny rc servo mounted on another, scans left taking temp reads and storing then 2nd servo drops it a "line" and it scans the other direction and stores readings and repeats until there's an "image" of temp readings then send to display with different colours for different temps . https://hackaday.io/project/20394-diy-thermal-camera Edited 2023-11-08 00:57 by stanleyella |
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| r2d2 Newbie  Joined: 16/02/2024 Location: Czech RepublicPosts: 1 |
Hello, Is it possible to run camera without connected LCD ? I tried and got error: [2] Device CAMERA OPEN 26, 17, 25, 24, 16, 6 Error : Invalid display type |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9115 |
No: the display is used as a framebuffer |
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