Tag Archives: camera

Teaching the PixyCAM Camera an Object

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Teaching PixyCAM an object is super easy. Before we start, which objects will work well with PPixyCAM, and which wont? PixyCAM uses a hue-based colour filtering algorithm to detect objects. Since PixyCAM uses hue (colour), the object needs to have a distinct hue. Here are some objects that are good because they have good, distinct hues.

Installing PixyMon for the CMUcam5 Pixy Camera on a Windows PC

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I have finally gotten around to purchasing a CMUcam5 PixyCam for myself. The (CMUcam5) PixyCam is a Smart Vision Sensor, with advanced Object Tracking. One advantage of this Camera is that you can quickly “teach” it to locate objects. It saves you time and data flow by only outputting the object data that you’re interested in. A multitude of connection options are available which means you can use PixyCam with almost any microcontroller, including Arduinos, Raspberry Pi, BeagleBone Black and a dedicated LEGO Mindstorms version. I settled for the dedicated LEGO Mindstorms version of the PixyCam which plugs directly into a LEGO Mindstorms NXT or EV3 Sensor Port.

Using OpenCV with the Raspberry Pi Camera

OpenCV RasPi CSI Camera
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OpenCV doesn’t work natively with the Rasperry Pi Camera as it is not a usb-webcam. That said, the applications such as raspivid or raspistill controls the Raspberry Pi Camera using MMAL Functions. So the one needs to modify the source code of these applications, by using the Buffer Memory of the Raspberry Pi Camera Board to be feed to OpenCV as Image Objects.

First Look at the Raspberry Pi Camera with CS Mount Lens

Raspberry PI Camera
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Back at the end of December 2013 I discovered and purchased a Raspberry Pi Camera Board with a CS Mount Lens already fitted and is supported in the latest version of Raspbian, Raspberry Pi’s preferred operating system. The ArduCAM Group have released an add-on camera module for Raspberry Pi which is fully compatible with official one. The camera duly turned up a fortnight later in a small box which had been packed with great care. I finally organised myself to check the Raspberry Pi Camera module a few days ago.

Raspberry Pi Camera Board with CS Mount Lens

RasPi CSI Camera
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Fully Compatible with Official Camera Module.

In order to meet the increasing need of Raspberry Pi compatible camera modules. The ArduCAM Group have released a add-on camera module for Raspberry Pi which is fully compatible with official one. It attaches to Raspberry Pi by way of one of the two small sockets on the board upper surface. This interface uses the dedicated CSI interface, which was designed especially for interfacing to cameras. The CSI bus is capable of extremely high data rates, and it exclusively carries pixel data. The camera is supported in the latest version of Raspbian, Raspberry Pi’s preferred operating system.

A Shinning Light for the NXTCam Camera

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I’ve been experimenting with my new Mindsensor NXTCam. As most people are aware of the inherent issues associated with optical sensing, mainly due to changes in lighting level, can be very frustrating. In attempt to minimise this lighting issue, I decide to construct a stable light source for the NXTCam. To begin, I needed to organise some LED lighting modules that I could run from a standard LEGO 7.2-9.0 volt power supply. As I could only source a 12 Volt Modules with which to work with, the project needed some extra electronics to make it work.

NXT Laser Range Finding Camera Theory

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Below is Lego Mindstorms Compatible Laser Unit uses a 650nm 5mW (Red) laser module.  I wanted to create a small compact Laser Unit that fitted in as small a footprint as possible. The Laser Module and other electronics fits easily into a standard LEGO ‘2×4 Brick’, with a ‘2×3 plate’ & Technics Connector attached to the bottom. It would have been possible with some effort to fit all the parts within a ‘2×3 Brick’. I decided on a Fly-lead instead of a standard NXT style Socket to keep the unit compact. The Laser is very bright, despite it’s very small size, so as a range-finder the camera can pick it up from a far. Like a NXT Light Sensor’s Red LED, the Laser can be toggled on and of via Software.

Rechargeable 2.4Ghz Wireless Camera

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I brought this Hamy, 2.4Ghz Wireless 1/3 Sony CCD Rechargeable Camera to use with my Robots. It has a Sensitivity: of 0.5 Lux at F1.2, which makes it great for low-light conditions. As can bee seen from the Video made with just the light coming through a doorway  into a large room, its sensitivity is EXCELLENT!



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