Old QB 288V1 thread here
Thanks to everyone who supported original Horticulture Lighting Group QB 288 and QB 304. V2 was have possible only from your support.
What is difference between Quantum Board
QB 288 V2 and QB 288 V1
QB 288 V1 uses LM561C , 5630 package
QB 288 V2 uses LM301B , 3030...