22 Jan '15, 12am

DIY Single Pixel Digital Camera

DIY Single Pixel Digital Camera

[Artlav] wanted to build a digital camera, but CCDs are expensive and don’t respond well to all wavelengths of light. No problem, then, because with a photodiode, a few stepper motors, the obligatory Arduino, and a cardboard box, it’s pretty easy to make one from scratch . The camera’s design is based on a camera obscura – a big box with a pinhole in one side. This is all a camera really needs as far as optics go, but then there’s the issue of digitizing the faint image projected onto the rear of the camera. That’s fine, just build a cartesian robot inside the box and throw a photodiode in there. There are a few considerations when choosing a photodiode for a digital camera. Larger photodieodes have lower noise but higher resolution. [Artlav] has been experimenting with a few diodes, but his options are limited by export control restrictions. Even with the right photodiode...

Full article: http://hackaday.com/2015/01/21/diy-single-pixel-digital-c...

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