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Posts Tagged ‘Raspberry’

The RUHAcam is a ‘retro-style’ digital camera made with the Raspberry Pi HQ Camera module

03 May

When Raspberry Pi announced its 12.3MP High Quality Camera module in April 2020, it opened up a whole new world of photo-centric DIY projects. One such project that’s come as a result of its release is the RUHAcam, a ‘retro-style’ digital camera made from scratch by Ping-Hsun ‘penk’ Chen and Ruha Cheng.

The RUHAcam is built around a Raspberry Pi Zero W connected to a Raspberry Pi High Quality Camera module, which accepts C and CS mount lenses. Other features include a built-in 2,000mAg Li-Pi battery, a 2.2” TFT display that serves as the viewfinder and a 3D-printed case clearly inspired by SLR cameras from the past. The camera is still a work in progress, but is fully functional and captures rather impressive images when used with the 16mm lens ‘penk’ and Cheng attached to it for the following sample photos:

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In addition to sharing detailed instructions on how to make your own RUHAcam at home, ‘penk’ and Cheng published the 3D design components and software required to run the camera for free under MIT license. This means you’re free to build an exact replica of the RUHAcam or use it as a base to make your own DIY digital camera.

In speaking with DPReview, ‘penk’ said the duo ‘plan to improve more on the software side, to add controls to the UI using Pi’s libcamera stack, and to leverage Raspberry Pi more as a server to easily share captured images with smartphones.’ You can find all of the instructions and materials needed to make your own on the RUHAcam GitHub Page.

Articles: Digital Photography Review (dpreview.com)

 
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Video: This is what happens when you make a bullet-time rig out of 15 Raspberry Pi cameras

17 Oct

Canadian photographer Eric Paré has built a bullet-time rig using 15 Raspberry Pi cameras synchronised to record pictures at exactly the same moment from different angles. The cameras then create a series of images that show the subject, usually someone jumping in the air it seems, from multiple viewpoints. These images can then be put together as a video to show the person frozen in mid-air as the camera appears to pan around them. The technique, made popular by the fight scenes in the movie The Matrix, requires that the cameras used are all pointing at exactly the same spot and that the shutters are tripped either at the same moment or in sequence.

Eric usually uses a collection of EOS DSLRs for his bullet-time videos but thought it would be interesting to use the tiny Raspberry Pi cameras as the lenses can be placed much closer together to create smoother motion in the final video. To do this he mounted 15 cameras on an aluminium rail and synchronised them using a single dashboard that could also control the settings of each camera.

Problems arose due to the wide angle lens of the Raspberry Pi camera and because the cameras are mounted on their PCB using a gum glue that doesn’t hold them in a specific position. This meant that while the boards were all facing the right way the cameras were not, and the footage produced was jerky. Eric solved this issue by remounting all the camera units directly to the boards using a thin adhesive.

Each camera in the rig was connected to the laptop via an Ethernet cable to a switch and Eric triggered the set-up using a Bluetooth presenter controller. He says he didn’t need to make any custom electronics for the rig when shooting with continuous lighting, but he did make a new control board to fit in the rig when he wanted to use flash.

For this experiment Eric used the Pi 3B+ with version 2 of the Raspberry Pi camera module. He says the same set-up would also work with the newer High Quality Pi camera with its 12MP sensor and interchangeable C-Mount lens system.

See Eric’s website for more of his work.

Articles: Digital Photography Review (dpreview.com)

 
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Video: How to build a custom Raspberry Pi ‘Becca Cam’ with zero coding experience

06 Jul

Becca Farsace, Video Director at The Verge, has shared a video detailing how she built her own Raspberry Pi camera with no coding experience.

The nine-minute video is a fun overview of what it took to turn a Raspberry Pi 4 computer into a fully-functioning interchangeable-lens camera with the help of Raspberry Pi’s new HQ Camera add-on, a three-inch touchscreen, a spare lens or two from Becca’s 16mm Bolex camera and a sacrificial Ninoka nk-700 film camera.

Since Becca isn’t too familiar with Python, the coding language needed to build apps for the Raspberry Pi 4 computer, she had more than a few hurdles to clear before she could get shooting. However, with the help of her Instagram followers, the camera’s manual and plenty of perseverance over the course of a few days, she was able to get a program up and running that allowed her to capture images.

The resulting ‘Becca Cam’ is far from intuitive (particularly when the keyboard is required) and quality of images captured with the camera isn’t going to blow anyone away, but for a 1.0 product built with zero coding knowledge, it’s impressive.

Becca shared links to all of the materials and code used to create the camera (aside from the frame, which was hacked together from an old film camera), so if you’re feeling like making your own camera, follow the video link and pick up the required components.

Articles: Digital Photography Review (dpreview.com)

 
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Raspberry Pi launches 12.3MP interchangeable lens camera module for its Pi computers

30 Apr

What if I told you that for just $ 50, you could have yourself a fully-customizable interchangeable lens camera capable of shooting 12.3MP stills and capturing 4K/30p video? You’d probably tell me to kick dirt, but the truth is that’s now a possibility thanks to Raspberry Pi’s new ILC camera module and accompanying lenses, which start at just $ 25.

‘There has always been a big overlap between Raspberry Pi hackers and camera hackers,’ reads the Raspberry Pi blog post announcing the setup. ‘Even back in 2012, people (okay, substantially Dave Hunt) were finding interesting ways to squeeze more functionality out of DSLR cameras using their Raspberry Pi computers.’

The full kit currently available from Raspberry Pi.

Since 2013, Raspberry Pi has released a few different camera modules: the original 5MP camera board based around the OmniVision OV5647 sensor, a Pi NoIR board for infrared photography and a follow-up camera board that used the Sony IMX219 8MP sensor (this unit replaced Raspberry Pi’s 5MP camera board, which has the distinction of being just two other products the company has ever officially discontinued).

Despite selling more than 1.7 million units of the 8MP camera boards to date, the Raspberry Pi team wasn’t content with the limitations put in place by fixed-focus camera modules with small sensors and poor performance. Enter the new Raspberry Pi High Quality Camera.

This new module is build around the Type 1/2.3” (7.9mm diagonal) Sony IMX477 backside-illuminated CMOS sensor that features 1.55?m pixels (double that of the IMX219 found in the 8MP camera board). In front of the sensor is a C and CS lens mount with adjustable back-focus, a mount most commonly used on 8mm, 16mm cameras, closed-circuit security cameras and other industrial-focused systems. It even features a built-in 1/4”-20 tripod mount for supporting the system.

While any off-the-shelf C- and CS-mount lenses will work with the new sensor, Raspberry Pi has announced it will be working with its official retail partners to carry a pair of lenses: a 6mm CS-mount lens and a 16mm C-mount lens for $ 25 and $ 50, respectively. There’s always the option of 3D printing and purchasing third-party adapters to create wild combinations, such as this monster, shown below, built around the Canon 70–200mm F2.8 IS II lens.

The possibilities are nearly endless.

The High Quality Camera is compatible with ‘almost all’ Raspberry Pi models, starting with the original Raspberry Pi 1. The only exception are a number of early Raspberry Pi Zero boards that lack the connector. Raspberry Pi has compiled accompanying support documentation on the product page, including a ‘Getting Started’ guide. There’s also ‘The Official Raspberry Pi Camera Guide’ that’s available to download for free as a PDF or buy in physical form on the Raspberry Pi Press Store for £10.

The Raspberry Pi High Quality Camera, which will remain in production until at least January 2027 per Raspberry Pi’s obsolescence statement, is available starting today for $ 50 on the Raspberry Pi website.

Articles: Digital Photography Review (dpreview.com)

 
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Learning python raspberry pi pdf

01 Sep

The official firmware is a freely redistributable binary blob, searchable Cheat Sheet For Python This one pager python cheatsheet also provides a convenient option to search the method names. Once I started collecting the data, the learning python raspberry pi pdf board is shipped with a flexible flat cable that plugs into the CSI connector […]
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Raspberry Pi updates camera board with 8MP Sony IMX219 sensor

26 Apr

Raspberry Pi, maker of low-cost miniature computers frequently used in DIY projects, has upgraded its camera board accessory, replacing the previous 5MP OmniVision OV5647 sensor with an 8MP Sony IMX219 sensor. The new sensor is used for both the regular camera board and an infrared-sensitive version, and according to Raspberry Pi, it offers better low-light performance, image quality and color fidelity.

The camera accessory is a simple, small board with a ribbon cable that can be connected to one of the Raspberry Pi mini-computers. Creators have used the camera modules to record images through a telescope and equip drones with lightweight camera functionality, among many other applications. The previously used OmniVision sensor was discontinued in 2014, but a large stockpile allowed Raspberry Pi to continue offering the model until just recently. 

Speaking about tuning the image sensor pipeline, Naush Patuck said:

Regarding the tuning process, I guess you could say the bulk of the effort went into the lens shading and AWB tuning. Apart from the fixed shading correction, our auto lens shading algorithm takes care of module to module manufacturing variations. AWB is tricky because we must ensure correct results over a large section of the colour temperature curve; in the case of the IMX219, we used images illuminated by light sources from 1800K [very reddish light] all the way up to 16000K [very bluish light].

The Sony-based camera board costs $ 25 like the previous version, and is available through RS Components and element14.

Via: Raspberry Pi

Articles: Digital Photography Review (dpreview.com)

 
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Raspberry Pi enthusiast sends camera 120,000 feet above England

29 May

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David Ackerman, a ballooning hobbyist based in England has been working with the Raspberry Pi Foundation to use their products for high-altitude photography. Using a Raspberry Pi computer hooked up to the company’s new camera module, Ackerman created a lightweight ‘eye in the sky’ that he recently sent up to more than 120,000 feet above the United Kingdom. Click through for more details – and images – on connect.dpreview.com.

News: Digital Photography Review (dpreview.com)

 
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BBC tries out Raspberry Pi’s ‘nightmarishly complex’ camera add-on

16 May

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The BBC’s Technology Correspondant, Rory Cellan-Jones, has been getting to grips with the new camera module for Raspberry Pi – the low-cost DIY computer. The camera board was announced earlier this year, and opens up enormous potential for applications including robotics and high risk aerial/underwater use. Cellan-Jones got hold of one of the new camera boards and has written a short article in which he details the ‘nightmarish complexity’ of making it work. Click through for a link to the full article.

News: Digital Photography Review (dpreview.com)

 
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Creators of Raspberry Pi computer announce $25 camera module

07 Feb

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The makers of Raspberry Pi – the popular low-cost computer – have announced the development of a new camera module, expected to cost $ 25. Since the first version of Raspberry Pi was released early last year, more than half a million of the low-cost boards have been sold to eager enthusiasts all over the world, and put to use doing everything from running games to powering a voice-activated coffee machine (yes, really). Details on the forthcoming camera module are vague, but it is expected to offer at least 5MP resolution and the ability to capture HD video. Click through for more details. 

News: Digital Photography Review (dpreview.com)

 
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