I don’t know if it’s a bug, but if i switch the slider to Off, the 8 LEDS goes together ON; and when I put the slider to ON, the 8 Leds goes together OFF? Blinking goes correctly.
But it’s strange that all Leds work together. I tested it on 2 different VMB8PB .
Is this a firmware bug or is this normal.
My firmware version : 0627 and the other one : 0649


Got this behavior also once, seemed that I had my led’s reversed connected. Maybe the same prob.

indeed, now it works. Well the confusion came because on the board of the VMB8PB, the name is COM, and I connected it with the idea that its the ground. But Velleman is, in fact, very clear : connect Red with Red and white with white… :slight_smile:

Many thanks for the help.