Robinson signed with Detroit's practice squad Wednesday, Field Yates of ESPN reports.
Robinson's best days are behind him, as the three-time 1,000-yard receiver had just 1,029 receiving yards combined over the last three regular seasons between the Bears, Rams and Steelers, then failed to secure a roster spot on cut-down day with the Giants. Nonetheless, the 31-year-old Robinson has a chance to eventually move up to the active roster for a Lions team that's currently carrying only four healthy wide receivers.