The design of a low cost LED moth trap started as a hobby project but caused so much interest that we published a book on how to build one.
The trap has been designed so it may be made using hobby level skills using components that may be purchased from a mix of on-line and local suppliers.
Using low power 0.75 W LEDs, it may be powered with rechargeable AA batteries or similar. Although it is low powered, it catches enough moths to be useful. Using five traps a night on a nature reserve in 2015 collectively 425 species were recorded over Spring, Summer and Autumn.
How To Build Your Own Moth Trap may be bought from Amazon, or ordered through your local book seller.