A look inside Poundland's LED Halloween projector.

When I first saw the word "projector" written on the box of this product it immediately conjured up images of an LED,lens system and little plastic image disks for projection. But it's simpler than that, and is based on the common constellation style projectors sold widely on ebay. More of a Linnebach projector really, where a point source of light is directly shone through an image.
In this case the images have a Halloween theme with cobwebs, cats, witches etc. These can be lit from a single white LED or three red/green alternating LEDs. It uses 3 AA cells which is reasonable, and has the odd arrangement of running the red/green LEDs across all three cells, but the white LED across just two of them.