I have been a macro photographer for more than 45 years and your Instructable is certainly a macro lens designed specifically for a smart phone! I have an extensive kit of macro equipment; both film and digital, manual focus and auto. I will build this Instructable and add it to my kit! Thanks for making this for us!
Large Motors Class
Great Instructable! I've been drawing with a camera obscura for a few years now and this design makes mine look like 16th Century!
Getting Started With Electronics