Hi all, I’m looking to modify my setup a little and use a usb webcam rather than the camera port and was wondering if anyone ever ended up making a lens spacer / camera platform that worked well with either the Logitech C270 or Arducam ? I tried out the Logitech stl openflexure already provides and…

Hi @quigly , the Logitech C270 has options for RMS objectives which will give you the magnification that you want. The objectives themselves are pretty low cost - especially for the low magnification that you want. The tube lens can be the bit that is harder to get and higher cost. We have not looke…

@quigly you also mention the Arducam USB, which is basically just the same sensor as the PiCamera V2 with a different interface. It would probably be easier to integrate into the Openflexure microscope V7 than the C270 at a more sensible magnification. The board looks a little bigger than the standa…

I’ve used the C270 in the 6 version with a 40X objective and directly to a computer (VLC or Cheese) and works great. We did some experiments with M12 lens too a Have not tried on the 7 version C270 is cheap and easy to find in Argentina so it is a good option for educational/recreational use

This is a stupid question, but where are the instructions for opening up the C270 webcam and attaching the microscope modules? I am sure that I have seen them, but I cannot now work out where they are!

I found this: https://cdata.oho.wiki/images/d/dd/Of_mico_penflexure-microscope.pdf It shows adn explains what to do and matches what looked to be needed from taking the webcam apart. The lens module seems pretty firmly attached, even with the screws removed from the back.

I am waking up this discussion as I have made some progress on Openflexure basic optics modules for the Logitech C270 and Arducam B0196 USB cameras Draft: Lens spacers for C270 and Arducam B0196 (!309) · Merge requests · OpenFlexure / openflexure-microscope · GitLab . I think the Arducam B0196 module…

So first off my apologies for going dark, I could have sworn I responded to the earlier messages but must have never hit send. I think I lack a lot of technical expertise/vocabulary to say exactly what I’m looking for so a picture might help, I’ve attached my setup which is essentially four scopes …

That is really useful. Are you using autofocus for each picture, or is it all stable enough at that magnification? Autofocus as it is designed now is rather wedded to the Pi and Pi Camera. Making the main software work to get the colour correction and autofocus with a USB camera is a longer term goa…

I now have a version of C270 lens spacer that does fit in the standard inverted microscope. I have then measured the travel, which is only 6mm (3mm each way) in one direction, and is the full travel of the stage in the other direction. Is that a useful amount of travel? Mounted on an upright versio…

The stability is good, I’m not using autofocus for each picture. Or at least I don’t think I am, I’m using the openflexure_microscope_client python package and I only call capture_image() not autofocus(). My test run with the C270 went well in terms of focus, exposure, etc. If I recall correctly, th…

USB Webcam Lens Spacers and Camera Platforms

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WilliamW 13 January 2023 17:38 17

…and the same for the C270 (with a big strand of something and dirt on the sensor)

OFM v6 Logitech C270 - Hacking Instructions (Spanish version)

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USB Webcam Lens Spacers and Camera Platforms

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