Joystick calibration
Piotr Jaworski (<a href="https://pl.wikipedia.org/wiki/Wikipedysta:Piom" class="extiw" title="pl:Wikipedysta:Piom">User:Piom</a>), POLAND/Poznań
CC BY-SA 2.0
<span class="int-own-work" lang="en">Own work</span>, Created with The GIMP