How many times did you find yourself looking for Windows Control Panel and wondering which is the most recent plugged USB to SERIAL com port? Well simple and clean Python script comes very handy for this task. Just start a script and plug in new device – new com port will be displayed with minimal […]
Read MorePedestrian detection using YOLOv3
Owning a quality camera can be fairly useful by itself. Video stream can provide a lot of information not easily comprehendable by just using various sensors. However, not always there is a human eye to make a sense of it. Therefore, additional algorithms can be implemented to provide a lot of insights automatically. A lot […]
Read MoreAccurately measure height with microscope
As the subject implies this post describes a way to measure the height of an object using the motorized microscope. The whole trick is to take many incremental pictures of an object (and background as a reference) from different heights and analyze how sharp each frame is. Some interesting hardware is needed, but nothing that […]
Read MoreSecond life for x18 motorized lens
Had this 18x (5.4-96mm focal distance) salvaged zoom lens in my “inbox” for a while. Finally made it “tick” again with C1 camera and motorized lens controller. Replacing imager was a matter of unscrewing old one and screwing on C1 PCB – mounting hole spacing matched. And talking of controller – it was not even […]
Read MoreBig scary laser
Or not. I have been begging Santa for fiber laser for years and this year seems like I behaved myself good enough to deserve it. Crate weight was more than 60kg, pulled my back while carrying it but I don’t complain. Marking It’s quite opposite to 3D printers where material is being deposited. Laser energy […]
Read MoreKurokesu legal status update
It has been almost a month since Kurokesu stepped over individual business license and become UAB (similar to LLC or JSC) company. Also Kurokesu is now VAT registered. So there are some small changes. Base currency is changed to EUR. Two accepted currencies USD and EUR will stay active, prices in USD will be calculated […]
Read MoreLogitech Brio 4K webcam rework instructions
Recently Logitech released it’s newest camera BRIO 4K (8.8 Megapixels, wide dynamic range, great white balance, up to 90fps, USB3.0). Just like previous models it has fixed angle lens, which in some cases it is not enough. This is where custom housing for exchangeable C and CS-mount lenses comes in handy. And there are vast […]
Read MoreStressing C1 camera
I know from previous experience that Kurokesu C1 camera can handle decent temperature range, but only today made proper tests in thermal chamber. There are few aspects to be tested: stable data transmission over USB bus, stable hardware performance and temperature influence on picture quality. So let’s shove camera with attached temperature probes into chamber […]
Read MoreMaking best webcam even better
I have been planing to release Logitech BRIO 4K Pro webcam aluminium unibody rework kit for a while and as soon as I got time, designed and ordered a prototype. After receiving manufactured parts found few minor overlooked issues, but all has been fixed now. Can’t believe how small and slim it is compared to Logitech […]
Read MoreRobotic vacuum cleaners compared like never before
It’s been a while since my experiments to analyze robotic vacuum cleaner motion. That time I used Kurokesu C1 camera mounted near the ceiling, recorded motion and ran some simple computer vision algorithms to get live heat map. Result is well described in previous blog record heatmap video of one robot. This time I present […]
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