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  • MaykeS1 followed Jacks2High5 weeks ago
      • Fully Adjustable DIY LED Grow Light and Grow Box - Complete Light and Cabinet Build (all Under £300!)
      • The Modular PC PSU High Power LED Grow Light
      • DIY Magnetic Algae Scrubber – the ‘Spiderman Scrubber’!
  • MaykeS1 commented on jarpische's instructable Modular Hydroponics System5 weeks ago
    Modular Hydroponics System

    Congratulations for your project!Any plants already growing?

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  • MaykeS1 commented on MaykeS1's instructable A Raspberry Pi Multispectral Camera6 months ago
    A Raspberry Pi Multispectral Camera

    Of course you can.

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  • MaykeS1 commented on MaykeS1's instructable A Raspberry Pi Multispectral Camera7 months ago
  • Low-cost Fluorescence and Brightfield Microscopes

    This one: https://www.amazon.co.uk/gp/product/B01E5IEIUU/ref...I know I know, extremely cheap but I'll buy something better later...

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  • Low-cost Fluorescence and Brightfield Microscopes

    Oh yes!Going for it as soon as I receive my X100 Microscope Objective.Congratulations @jbumstead

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  • MaykeS1 commented on MaykeS1's instructable A Raspberry Pi Multispectral Camera8 months ago
    A Raspberry Pi Multispectral Camera

    Hi texacoon,Adding extra cameras would be advantageous if you want to have more control over specific wavelengths. For example, using 4 cameras would enable you to filter the red, green, blue and NIR light down to a specific wavelength and bandwidth. The question is, do you really need that level of control over the spectrum? Maybe not. Visible light, that is, red, green and blue, might not need that level of control if you simply want to produce NDVIs to detect general stress in plants. In that case, all you need to do is to add an extra band such as NIR (840nm with a bandwidth of 20-40nm) to detect stress. That means that you can have just 2 cameras, one getting RGB, the other one getting the NIR, for you to produce NDVIs.If you give me a little bit more of information I might be able...

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    Hi texacoon,Adding extra cameras would be advantageous if you want to have more control over specific wavelengths. For example, using 4 cameras would enable you to filter the red, green, blue and NIR light down to a specific wavelength and bandwidth. The question is, do you really need that level of control over the spectrum? Maybe not. Visible light, that is, red, green and blue, might not need that level of control if you simply want to produce NDVIs to detect general stress in plants. In that case, all you need to do is to add an extra band such as NIR (840nm with a bandwidth of 20-40nm) to detect stress. That means that you can have just 2 cameras, one getting RGB, the other one getting the NIR, for you to produce NDVIs.If you give me a little bit more of information I might be able to be more specific in the requirements you need. What drone do you use? Are you a farmer yourself? If so, what crops do you grow? What is it that you want to detect? Water or nutrient deficiencies? Maybe all you want to see is if your crop is growing uniformly across your field? When you say overpriced camera, what sort of product have you checked/used? Most available products such as the Micasense Rededge/Sequoia cameras are not overpriced, they are simply targeting a specific niche with specific requirements. Having said all that, I'm about to finish a second iteration of the multispectral camera so, it would be very interesting for me to add your feedback on the new specifications. The final product would be considerable cheaper than the products available on the market now.

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  • MaykeS1 commented on lingib's instructable Acoustic Radar Display1 year ago
  • MaykeS1 commented on diycreators's instructable How to Build a PHOTO LIGHT BOX1 year ago
    How to Build a PHOTO LIGHT BOX

    Nice one. Congrats.

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  • MaykeS1 commented on macgyver603's instructable How to Build a High-Powered Rocket1 year ago
    How to Build a High-Powered Rocket

    Holy Moly! It Rocks this project!!!

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  • MaykeS1 commented on MaykeS1's instructable A Raspberry Pi Multispectral Camera1 year ago
    A Raspberry Pi Multispectral Camera

    Filters can be acquired from Andover Corporation (https://www.andovercorp.com/products/bandpass-filt...). Cameras need to be PiNoir from Raspberry Pi.Cheers

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  • MaykeS1 commented on MaykeS1's instructable A Raspberry Pi Multispectral Camera1 year ago
    A Raspberry Pi Multispectral Camera

    Drop me an email at maykef at gmail dot com

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  • MaykeS1 commented on MaykeS1's instructable A Raspberry Pi Multispectral Camera1 year ago
    A Raspberry Pi Multispectral Camera

    The reality is, these things are complicated. The problem with RGB sensors is that they let you play with images but, as you progress and need to do more complicated analyses, you'll realise you need a sensor that is capable of picking up the right wavelength. Read this post for example: https://publiclab.org/notes/khufkens/11-02-2015/ov5647-raspberry-pi-camera-spectral-response-quantum-efficiency/ Now, I'm a bit intrigued. If you own the DJIs cameras and a Parrot Sequoia, they should be more than enough for NDVIs. What is exactly that you want to do? What do you mean by the Parrot Sequoia failing?

    Hi Jose, It depends on what issue you refer to. Camera sync? That's not difficult if you can design your electronics from scratch. But that costs money. The cameras I've seen have FPGAs for each of them, so obviously you are holdingthe info there while channeling through your BUS to the sim card. But they do much more than just that. As I said above, RGBs are not suitable for multispectral imaging; and most modifications I've seen are just for amateur projects. If you are serious about multispectral imaging you need to have all your bands separated, calibrated and aligned.Good luck with your peoject!

    The radiance sensor is not fully usable with those cameras, the only function that really does is to add some more information to the metadata of the images. I think you should play with the camera without connecting it to the radiance sensor. You can use a lambertian surface to calibrate the camera. It will work better than the sensor, and it's recommended by Micasense. You don't really need an RGB mosaic in most cases. In fact, you can create a real color image with the Sequoia, mixing the four bands. It may not look as nice and sharp as the RGB mosaic of the Zenmuse Z3 (I don't know which camera you own).This is my platform BTW.

    Hi @Kankamuso, a) You can definitely focus it at infinite.b) Yes, I did experience blurring. It's not suitable for taking pictures while the drone is moving. You could potentially stop over your AOI and take some photographs. The more serious problem is that the cameras would not trigger at the same time; there is a lag between of around 8 miliseconds, which is disastrous if you are moving too fast.c) FOV should not be a problem, at least if you are flying over 50m. You don't need to crop the images, but you'll have to align them either using a commercial software like Arcmap, or following few tutorials to use Opencv with C or Python for that purpose. Either way, you should get good results. You'll also have to take in consideration things like vignette effect, row gradient and irradian...

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    Hi @Kankamuso, a) You can definitely focus it at infinite.b) Yes, I did experience blurring. It's not suitable for taking pictures while the drone is moving. You could potentially stop over your AOI and take some photographs. The more serious problem is that the cameras would not trigger at the same time; there is a lag between of around 8 miliseconds, which is disastrous if you are moving too fast.c) FOV should not be a problem, at least if you are flying over 50m. You don't need to crop the images, but you'll have to align them either using a commercial software like Arcmap, or following few tutorials to use Opencv with C or Python for that purpose. Either way, you should get good results. You'll also have to take in consideration things like vignette effect, row gradient and irradiance calibration if you DO want to make something serious out of it. d) Remember that you get what you pay for, so do not get too excited about excellent results with this system. A commercial multispectral camera costs around $5K, at least 10 times more than this simple camera, but on the other hand, you get monochrome sensors, perfect sync, and technical assistance. I still believe that thus system should be enough to intro hobbyists into multispectral imaging, learn the basics, and then move on. I hope this helps.

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  • MaykeS1 commented on MaykeS1's instructable A Raspberry Pi Multispectral Camera2 years ago
    A Raspberry Pi Multispectral Camera

    I haven't followed up on new versions of the CM. As far as I remember, you can use both camera versions. There's a caveat though with the V2 cameras, but that's addressed in the tutorial, and I don't think it is a problem with recent versions of Raspbian.Does this answer your question?

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  • MaykeS1 commented on Matthews_Tips's instructable Connect RPI Zero W to Wifi2 years ago
    Connect RPI Zero W to Wifi

    As far as I know the Pi Zero does not have wifi connection. You should start by explaining how you solved that, then go onto explaining how to set up wpa_supplicant.

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  • MaykeS1 commented on MaykeS1's instructable A Raspberry Pi Multispectral Camera2 years ago
    A Raspberry Pi Multispectral Camera

    You need to follow the instructions here:https://github.com/andreafabrizi/Dropbox-Uploader

    Hi, The camera has just two lenses. The case I 3D printed had six holes, but that was for another system. Sorry for the confusion.

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  • MaykeS1 followed eyebot1172 years ago
      • DIY Cascade Night Vision Scope
      • DIY Infrared Night Vision Device
      • Corrugated Self-Portrait
  • MaykeS1 commented on anil8tor's instructable Solar Heater for My Shop2 years ago
    Solar Heater for My Shop

    Mind-blowing!This could be a very nice water desalinator in remote islands with no electricity supply!

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  • MaykeS1 commented on MaykeS1's instructable A Raspberry Pi Multispectral Camera2 years ago
    A Raspberry Pi Multispectral Camera

    You don't need a multispectral camera for indoors, do you?In any case is a extremely good setup for outdoors, you can leave the original raspicam lenses to have a wider angle of view.

    Definitely, you can actually use the following and add another capability to the camera.Have a look at this:https://groupgets.com/manufacturers/flir/products/flir-lepton

    Raspicam V2 8mp, 16mm M12 lenses, bandpass filter 840mn for NIR from andover corp.

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