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 […]
Read More3D scanning like a pro
Almost any sensor yields more interesting results if mounted on a moving platform. Remember scanning thermometer? It’s time to mount TOF LIDAR (Time Of Flight / Light Imaging, Detection, And Ranging) on two precision rotary stages arranged for pan and tilt operation. Rig provides real-time position data along with distance to an obstacle. Using simple […]
Read MorePlaying with expensive tools (double checking filter transmission charts)
Double checking and quality control is always a good thing. So few days ago I visited friendly optics lab to inspect if my new batch of filters match expectations. They have this awesome Lambda 1050 spectrophotometer. Slow, clunky, but still it is a top of the shelf precision instrument. New filters will be used in […]
Read MoreDIY thermal vision shoots 360 panoramas
Like most of you, I do like new technology and spend some money on new parts, sensors, toys, instruments and gadgets. While purchased small toy is on slow route I usually forget about it and remember only after it is delivered. Then item is settled in box proudly named “inbox” and continues it’s existence there […]
Read MoreWebRTC video streaming
WebRTC is a modern way to make web browser based real-time applications. And I recently found out that this awesome library supports Kurokesu C1 camera in 1080p resolution. It will take few minutes to test provided example scripts. Open webrtc samples in your browser and click “getUserMedia with resolution constraints” to get started. Click desired […]
Read MoreDumb thermometer gets digital output
Some time ago I purchased 4 channel thermometer. Soon after tried few optical character recognition (OCR) techniques on 7 segment symbols including pytesseract, they worked but I was not happy with results. Few days ago pyimagesearch published article detailing his approach. So I pushed it a bit forward and made solution more robust. Also added […]
Read MoreAll metal C930e webcam
I had Logitech C930e webcam laying in my drawer for a while waiting for a better fate. So today finally fitted it into aluminium C920 enclosure to be used with CS lenses. Actually it did not took much, had to remove some material on my trusty Proxxon MF 70 mini mill, everything else fitted like […]
Read MoreIt takes two Raspberries to run a clock
Despite lousy title, I will tell my success story how to add visual output to well known IoT tool called Node-RED. One Raspberry Pi, let’s call it RPI-RED, will be running Node-RED another one RPI-LED will be dedicated to server LED panel. First you should should install Node-RED to RPI-RED. Installation is well described in […]
Read MoreNode-RED for rapid hardware wiring
I will be posting few interesting follow-up posts that are based on tool for wiring together hardware devices called Node-RED. This post will serve as a reference how to prepare Raspberry Pi and install dependencies. Besides usual IoT stuff (sensor serving, data collection, aggregation and decision making) I see great opportunity to use node-red in rapid […]
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