I am using a few ULN2803's to control LED's. The pin connections and circuit that I am using are shown in the figures below.
When a HIGH signal is sent to any of the inputs of the transistor array, all of the LED's switch on, whereas only the one receiving the 5V signal is supposed to be switching to ground.
When there is no HIGH signal to any of the inputs, all LED's are off.
Is there something obvious that I am missing? What would the solution be?