How do you put a cellphone on a knex roller coaster? Answered
On youtube people did a lot of POVs for their knex roller coaster. I want to do one too. I don't have a mini camera or that set that comes with a small camera in it. So I want to put my cellphone onto it. My question is how to do it w/o using tape, glue, other materials, or modding the car?. Thanks.