Picture of DIY Dive light instructable.
This instructable is about the construction of a dive light with parts  that you can get at the local harware store.The ring at the back side is used as a rotary switch. This ring is coverd with ballbearing balls for grip.  More details can be found at http://www.divelight.me.pn/ or http://www.duiklamp.me.pn/ for an explanation in Dutch.

Step 1: The parts

Picture of The parts
Basic parts are a 50mm alluminium tube of 250 mm and a number of PVC "plumbing" parts.
DevDc (author) 6 months ago
Hello Mathew,

thank you for your interest.
I have put this information on:
Please let me know if you have additional questions.

Best regards, Cor
mathewriver6 months ago

Mind explaining the circuit?

Some really interesting ideas here. I like the use of reed switches and magnets,