Painting of course Pi Wars – the Raspberry Pi robotics challenge competition › Discussion Forums › Blast Off: the Straight-ish Line Speed Test › Painting of course This topic contains 2 replies, has 2 voices, and was last updated by SteveFromReading 1 month ago. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts 18th March 2019 at 8:14 am #6992 SteveFromReadingParticipant Am I right to assume that the walls and floor will be matt black ? My ultrasonic sensors seem to be playing up so thinking to switch to camera method…. eeeek ! 18th March 2019 at 2:22 pm #6993 Tim RichardsonKeymaster Yes, the walls and floor are matt black. There’s a white line down the middle that could be followed…. 25th March 2019 at 12:44 pm #7129 SteveFromReadingParticipant Thanks Tim, much more reliable I think than the SR04 distance sensors. You can have the best code in the world but if the sensors are producing garbage it ain’t gonna work ! Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic.