We received a shipment of several motors recently. They look identical in every way except some have red type on them and are marked 22282AG right below the smart port, and some are printed in gray with 24334GS below the smart port. Is there any difference between these motors? Are they both V5 competition legal?
Also, we have collected a pile of 20+ motors that don’t work. Plug them in to a working motor port, working smart cable, and they display no red light and the brain doesn’t notice a motor there. Is there a fix for this? I don’t believe any of them came in our most recent shipment; they’re about a year or two old, but have had very little use (simple PLTW classroom activities, maybe once or twice a semester).