We have the same issue. Once in a while, the color sensor just stops sensing green! Faulty sensors? On Tue, Nov 11, 2014 at 7:07 AM, Skip Morrow <[log in to unmask]> wrote: > Wow. Add us to the list of teams with color sensor issues this past > weekend. Many of our missions relied on the sensor, and had been working > nearly perfectly in team practices. > > When we got to the tournament, we did pretty good on our practice round. > But then for round 1 no missions worked. We hadn't changed anything, so we > were puzzled. Back in the pit, we troubleshot and troubleshot. We could > tell that the sensor was changing from color mode to light intensity mode > for no apparent reason. You should see a blue-ish light coming from the > sensor when it is in color mode. A reddish light indicates light intensity > mode. Depending on the settings of the wait block, the sensor should > automatically select the correct mode. Well, ours would spontaneously > switch over to light intensity mode, even though we never use light > intensity. > > Round two came and went and we got lucky on one mission. We still had not > figured out what was going on. Finally, we tried our backup robot. And > everything worked perfectly. 100%. It just never occurred to us that we > could be facing a hardware issue. > > For round three we went to the table and all of our missions worked. > > > . > > On Mon, Nov 10, 2014 at 6:35 PM, Monson Gmail <[log in to unmask]> > wrote: > >> Jill, >> >> We had a similar issue with color sensor, but we build a shield around >> the sensor and the issue was resolved. We researched and found this >> solution. >> >> Thanks, >> Monson >> Rookie coach of Future Geekbots >> >> >> On Nov 10, 2014, at 6:23 PM, Jill Hamilton <[log in to unmask]> >> wrote: >> >> Amy, thanks for sharing. We found this too. Our EV3 color sensor >> wouldn’t read green. We realized it was too close to the table. I am >> curious what you learned during the competition that helped. >> >> >> >> Thanks >> >> Jill Hamilton >> >> Coach of Cyborg Piñata 3335 >> >> Coach of the Mechanical Manatees >> >> Coach of the Electric Pineapples >> >> >> >> *From:* First Lego League in Virginia and DC [ >> mailto:[log in to unmask] <[log in to unmask]>] *On >> Behalf Of *Amy Nichols >> *Sent:* Sunday, November 09, 2014 10:15 AM >> *To:* [log in to unmask] >> *Subject:* [VADCFLL-L] Thank you! >> >> >> >> I want to offer a huge thank you from The Ruling Robot Falcons to Karen >> Berger and all the organizers, judges, referees, and volunteers that helped >> put on the regional tournament in Newport News yesterday. Our kids had >> such a fun time and I appreciate all the work that was put into it! I >> think the referees were cheering for all the kids as much as the coaches >> were! Thank you all! >> >> >> >> I also want to add a note about real Gracious Professionalism that >> happened for our team yesterday. When we arrived at the school yesterday >> and our kids ran their robot on the practice boards, they discovered that >> nothing on their robot worked. All their missions were dependent on the >> color sensor, which had was only randomly seeing certain colors. They >> tried everything they could think of to fix it, but then got the idea to >> see if the other teams that had EV3's could help. So they went around the >> room asking other teams if they had any ideas or knew how to calibrate a >> color sensor (one of the things they thought perhaps was wrong). The >> other teams all stopped what they were doing to help our kids try to >> problem solve and help think of what could be wrong. It was very apparent >> that these kids were not just there to win a tournament...but they really >> loved being there and wanted to help. This just made me love FIRST/FLL >> even more than I already did, and realize just how great this organization >> is! >> >> >> >> Thank you all! >> ------------------------------ >> >> To UNSUBSCRIBE or CHANGE your settings, please visit >> https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or >> leave the list". >> VADCFLL administrative announcements are sent via >> VADCFLL-ANNOUNCEMENTS-L. Visit >> https://listserv.jmu.edu/archives/vadcfll-announcements-l.html to >> subscribe. >> ------------------------------ >> To UNSUBSCRIBE or CHANGE your settings, please visit >> https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or >> leave the list". >> VADCFLL administrative announcements are sent via >> VADCFLL-ANNOUNCEMENTS-L. Visit >> https://listserv.jmu.edu/archives/vadcfll-announcements-l.html to >> subscribe. >> >> ------------------------------ >> To UNSUBSCRIBE or CHANGE your settings, please visit >> https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or >> leave the list". >> VADCFLL administrative announcements are sent via >> VADCFLL-ANNOUNCEMENTS-L. Visit >> https://listserv.jmu.edu/archives/vadcfll-announcements-l.html to >> subscribe. >> > > ------------------------------ > To UNSUBSCRIBE or CHANGE your settings, please visit > https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or > leave the list". > VADCFLL administrative announcements are sent via VADCFLL-ANNOUNCEMENTS-L. > Visit https://listserv.jmu.edu/archives/vadcfll-announcements-l.html to > subscribe. > -- To UNSUBSCRIBE or CHANGE your settings, please visit https://listserv.jmu.edu/archives/vadcfll-l.html and select "Join or leave the list". -- VADCFLL administrative announcements are sent via VADCFLL-ANNOUNCEMENTS-L. Visit https://listserv.jmu.edu/archives/vadcfll-ANNOUNCEMENTS-l.html to subscribe.