I warmly welcome Due to the fact that from time to time the topic of inspection microscopes in the "Do It Yourself" category appears here, I decided to present my solution for this device. The design is not extraordinary and innovative, it is based on an industrial camera that I recovered from electro-waste, the webcam gives a video signal in color (I was even surprised that we throw away such things here). The camera output is typical for industrial cameras, the AV output is terminated with a BNC socket to display the video signal on a computer monitor due to the fact that CCTV monitors are for some reason much, much more expensive, I used a signal converter purchased on a Chinese portal. It has several inputs on board, including VGA, SVIDEO and industrial AV input and one VGA output, of course. For me, it turned out to be practical enough, because I additionally connected the video signal from the computer to it with a standard VGA-VGA cable, but quite long, about 5m, and in case of the need, for example, to view the diagram that I currently have displayed on my computer monitor, the arrangement of components without detaching from the soldering iron, I switch the image signal source that interests me. I won't elaborate on the functions that the converter has, I've had it for a long time and I don't really remember what parameters it has. In the webcam itself, a C-Mount lens was replaced (of course also purchased on the Chinese portal), which allows me to enlarge the image 30 times, a better lens could be installed, but the price was about PLN 80, on the portal it was stated that a magnification of 100x. For the whole thing, I needed a tripod, on which I planned to mount the camera steadily, especially since it gained some weight with the new lens, but at first I had no idea for a good solution. In the place where the microscope was to be mounted, there was little space, because for the sake of convenience, I installed a shelf above the worktop for the instruments. I came up with the idea that I would install the articulated arm of the camera's boom on the underside of this shelf. It served me for a while, but it had a tendency to drop to its maximum reach, and that was how it was set up for work. Additionally, in the horizontal axis, the microscope was able to loosen, so that before each unfolding, all the locks had to be tightened very tightly, sometimes I had the impression that the threads would not withstand it. And recently I decided to solve this problem, I designed a new tripod in Fusion360, also screwed to the shelf. The structure is based on one 20x40 mm V-slot profile, which serves as a horizontal guide, and one 40x40 profile, which is the rotary axis on which the microscope frame is mounted. The rotary axis has a bearing, in addition, I used a simple magnetic lock when setting the microscope to work, so that the system did not have a tendency to self-fold. The elements of the tripod, apart from the profiles and some small elements, were cut on a CNC plotter. The rest of the details are shown in the photos, on the GrabCAD portal where I have placed the CAD file of the structure, you can download it or watch it in 3D => https: // grabcad.com/library/inspection-microscope-stand-1
Not bad, but it would be nice to have its own omni-directional light source with adjustable intensity and temperature.
It will certainly be, and I have been thinking about it for some time, but as it happens with me, I have to mature for this decision. It seems to me that the best solution would be with switched lighting zones.
I think you inspired me. I have an industrial Sony camera at my disposal, for monitoring, with a composite output. I already thought it was useless. I also have an identical converter, I bought it once, because "why not come in handy". So it remains for me to look around for the lens. What password to enter in Aliexpress?
Scary gibberish at this auction. And these 80P LN probably are no longer valid.
It's a fact, more than once I wondered what would come, but fortunately for me it was always what I expected. I have already ordered devices for even a thousand and a few zlotys, but the price is even lower. In one offer you have a choice of different lenses and yes - the one I have is 8x-130x and costs PLN 65.53, there is also a better 10x-200x for PLN 144.85 - all offers with shipping in the above-mentioned prices.
Interesting idea, I have a Chinese digital microscope myself and it is so-so. Write what is this camera and lens, can it be soldered under this?
Yes, yes, that's what I am doing for this purpose, my eyes are not the same as they used to be, but the watchmaker's magnifier is unfortunately too weak for me, the webcam - DCC-521F by D-MAX with SONY matrix, post above lens - Chinese with Ali. .. 8x-130x.
I took it from the manual and it is available on the net.
Horizontal image resolution of 600/700 TV lines. The clarity of the image is achieved by the use of SONY CCD sensor offering 410,000 (effective) image points, resulting in a horizontal resolution of over 600 TV lines. True Day Night models offer 700 TVL with ICR (in black and white mode
And this is what I found in your manual:
Specifications Image device 1 / 3type Interline transfer CCD Effective picture elements SSC-DC134: 510 (H) × 492 (V) SSC-DC132P / DC134P / DC138P: 500 (H) × 582 (V) Horizontal resolution 330 TV lines Minimum illumination 0.85 lux at F1.2 CCD Iris SSC-DC134: 1/60 to 1 / 100,000 second SSC-DC132P / DC134P / DC138P:
So it looks like the effective number of image points is 250,920.
Correction, it's not this model, it should be 291,000.
I did a trial with the camera and found it broken. Fortunately, it was fixed quickly, and I will say that the image on the 17 "monitor at 1280 resolution is surprisingly good. I am ordering a Chinese lens.
Here you are, but this is an example offer that I gave a few threads above, my intention is to indicate what to look for and not to promote the seller and the forum administrator may throw this thread to the trash, Link in the following item, select the appropriate one:
The lens ran up. It cost me PLN 75, but if I had bought the day before, I would have paid PLN 65. I made a quick test and it turned out that from a distance of about 35 cm we have a working area of about 5x5 cm. The quality, however, is noticeably worse than in the photos presented by the author, but I see potential.
Mine is mounted 11 cm above the table, recently I built an additional LED ring light for it and noticed that the color of the light has a very large influence on the image quality. Above the desk I have LED lighting similar to the color of natural light and the image on the monitor is clear with natural colors, while with the ring illuminator turned on, which gives a bright white light, the image becomes blue, not clear, adjusting the intensity does not help much here. I will try to write about the built illuminator soon, I will add that it is built on the basis of a ring with 16 WS2812B LEDs, in addition to adjusting the intensity, it has the function of regulating the lighting zone, I am thinking of adding the function of changing the light color.
I had a moment today and played a little with a new toy. I present the effects of this game in the pictures. 32 "TV, 1024 resolution in some photos and" original "in others. I wonder if you can guess. The 1024 resolution image is the signal sent by the Composite - VGA converter, while the" original "resolution is the signal sent directly from the camera to the Euro connector.
I tried to grab the elements with tweezers while looking at the TV, and I will say that there is no problem with aiming and grabbing even the smallest elements.
I have to say that for an expense of PLN 75, it does the job.