Check out my instructable at https://www.instructables.com/id/Smog-Log-DIY-Smog-Measuring/ it should help solve your problem!
That's such a smart idea! I love it!
Cardboard Spool Holder
Smog Log: DIY Smog Measuring
Smog Log: DIY Smog MeasuringView Instructable »
Acoustic Tractor Beam
Introduction & History Bits
Ingredients & Tools
Tools and Materials for Bread
Welcome to Bread
Raspberry Pi Class
Canning and Preserving Class
Laser Cutting Class
https://www.instructables.com/id/How-to-Make-a-Rasp...please give feedback!
Superhero Costume Class
Raspberry Pi Vnc Server
Raspberry Pi Vnc ServerView Instructable »
Pasta Making Class
3D Printing Class
It's to keep the flame in a nice flame shape and not just random flames like a campfire.
Roof Rack Shower for Outdoor Activities
Camp Sink - Temporary Hand Washing Station
Splitting Water the Easy Way
Make a UAV for research and photography
DIY "PRO" DSLR slider for $10
Easy 5 Minute Card Phone Holder
Hi Everyone, Please vote for me in the Maker Oylimpics contest!
Wireless All Sky Camera
Secret Compartment Jewelry Box
DIY Raspberry Pi 2 Laptop
How to make a Raspberry Pi Slideshow!
Thanks! Raspberry Pi's keep the cost down while being the same in functionality!
How to make a Raspberry Pi ...View Instructable »