OpenChrony - Arduino Uno chronograph
thingiverse
This is a DIY chronograph for paintball, nerf, or other pneumatic guns (only) of sufficient caliber. Not for use with realsteal firearms, not accurate enough timing and especially not thermally-resistant enough bullet gates. Source code and accompanying libraries included in "OpenChrony.zip" Full write-up hosted on NerfHaven: http://nerfhaven.com/forums/topic/28105-openchrony-open-source-diy-chronograph/ V1.5 Update: The new source code is in "OpenChronyV1.5f.zip". Print "V1-5_Electronics_Box_Top.stl" in place of "Electronics_Box_Top.stl". The other files are the same for both versions.
With this file you will be able to print OpenChrony - Arduino Uno chronograph with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on OpenChrony - Arduino Uno chronograph.