Light Painting With A DIY-Projector

In the following, I would like to explain my requirements for the projector and the resulting setup:

• I want to be able to project images the size of a postage stamp up to 2m onto objects from a distance of 1 - 3m. This can be realized with an interchangeable lens. An old camera housing is ideal as a housing.
• I would like to project a coarse resolution onto the objects. Similar to the dots of Roy Lichtenstein's pop art, but not dots, but individual pixels. A low-resolution display must be built into the camera body.
• Handling should be simple, similar to a slide projector. A memory card serves as image storage.
• The projector should also be mobile, which is why it is powered by a rechargeable battery.

As described above, an old camera body served as the basis. On the one hand, there is a functioning battery compartment and the existing lenses can be used.
To do this, I removed the existing electronics from the housing. The electronics, consisting of a voltage converter, Arduino, memory card and 128x160px display, were then housed in the body.
I removed the rear panel of the display and mounted the TFT display in place of the curtain. If you now shine a flashlight or flash into the camera from behind, the light is projected onto the subject through the display and a lens.
The memory card contains BMP files that are shown on the display.

• ATmega328 board
• Battery / rechargeable battery
• XL4015 DC-DC Step Down Module 5A
• 1.8'' SPI TFT display 128 x 160
• Memory card
• Camera (cannibalized)

Here is a link to the website
Only the third line from the bottom was changed

before: TFTscreen.image(logo, x, y);
after: TFTscreen.image(logo, 1, 1);

Here is the link to the article

Another project I had presented here as THE SKULL LIGHT PAINTING, in which eyes were inserted into the skull by ORBs and the skull itself was provided with patterns by the projector.

Here is the link to the article

And last but not least, I would like to refer once again to the project
THE DIGITAL MAN in which the DIY projector was also used together with the ORBOMAT.

Here is the link to the article

I hope you enjoyed the post and I'll see you here again next Sunday. Stay tuned!