Laser Barometer

thingiverse

This ingenious device is currently one of the most sensitive barometers on the entire planet... That is until YOU build an even more advanced one! With just a soup can, a balloon and a cheap laser pointer you can create a barometer that is so remarkably sensitive its indicator will sweep across a scale of well over a meter down a short hallway. In fact it's so extremely sensitive that even touching the can will make it swing the laser rapidly upwards due to the heat from your hand! Aimed down a hallway you can see the weather outside change the reading second by second. Aim it across a gym or warehouse for even more dramatic results and a faster longer beam path! Print out the parts, assemble them as shown using wire for hinges and you too can watch the waves of the atmosphere thin and thicken above you. All readings are inverted of course since the balloon rises when air pressure drops. To turn on your laser press the button down and slide it under the ring so it stays lit. If you have trouble inserting your laser into the ring remove the front cap from it temporarily. To run your laser for extended periods wire it directly to a suitable power source. To avoid heating the can lift it by the support or ring. A ridiculously sensitive instrument made entirely by your own hands to make you the envy of all your maker geek friends. Sized specifically for a 540 ml Campbell's soup can. (Calibration not included) Assemble with short lengths of solid wire. I used the legs off a diode.\r\n\r\nMade with blue PLA from Reprap Warehouse\r\n\r\nhttps://www.reprapwarehouse.com/