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We continue with our project to monitor the state of window opening that will allow us to review our natural ventilation strategies in the classrooms. For this, in this project we are using a Raspberry Pi 4B and an old USB Webcam to monitor the status of the windows by tracking ArUco markers. In the previous blog we were preparing the environment, installing the operating system, a VNC server to work remotely with the Raspberry Pi in headless mode and compiling the OpenCV libraries for Python. ...
Hi Photo Project Buffs,   I just received the RPi 4 B,  a RPi HQ module, and a 12 MP lens for my project of a stop motion video project. Thank goodness for Amazon, an RPI4 power supply, 32G SD card, and HDMI cable arriving very quickly to also support this project.   Before starting to video, I need to get a feel for the new equipment.   It took me some time to figure out the 12MP lens adjustment depth into camera lens bracket to get a good focus for the field depth I'd ...
Real-Time Vehicle Detection, Tracking, Number Plate Detection, and Speed Estimation using Raspberry Pi HQ CameraAs we are going for a walk, escorting our kids to school, or going to our work in the morning, we’ve all experienced unsafe, fast-moving vehicles operated by inattentive drivers that nearly mow us down. We feel almost powerless. These drivers disregard speed limits, crosswalk areas, school zones, and “children at play” signs altogether. When there is a speed bump, the ...
We plan to make a detector of the aperture of sliding windows for our VenTTracker Project that monitors Natural Ventilation Habits in Classrooms. There we implemented two different methods to know the aperture of the window, one using an accelerometer module and another with a quadrature encoder made with reed magnetic switches. The problem for both approaches is that you need a device attached to the window. In this project we plan to use the Raspberry Pi 4 Model B and a camera to monitor th ...
The AV to HDMI convertor has arrived and I have connected it up to the Serial JPEG camera and a HDMI display. The HDMI display is from a previous Element14 Project (HoloPiBot #10 : It Actually Works - It Really D... | element14 | Programmable Logic) and is the only HDMI display I think I have, although I could use the laptop or TV if I want a bigger picture. Below is an example of everything rather haphazardly plugged together.     This is all working, which is good, but unfortunate ...
Today I should be laying my newest path and cementing in the edging brick pavers, but it's cold and raining so I'm staying inside. I could watch the telly, I could drink a cup of tea, I could even tidy my desk (no, anything but that), but I thought why not see about something for the latest Project14 competition on Photography (Photography | element14). I'm not particularly a camera person and I don't know much about optics but I did purchase a digital camera module with serial TTL communication ...