Ploopy Classic Trackball By Ploopy Corporation · Example build · 8 views · 0 remixes An open-source index-finger trackball with a PMW3360 sensor, a scroll wheel, five buttons and a 3D-printed shell 0SaveRemixCopy link Estimated parts costNo price seen yetDifficultyDifficultParts4 parts · 9 pcs Start the assembly guide →