Pads, LEDs and resistors are permanently connected to the circuit board. The pieces also arrived with 3 sticks still attached and the other 2 attached to each other giving me the option of using them as a 3x8 array or as a 2x8 array. Leaving them sticky leaves the options open. Well done. I recommend using PCB racks for mounting, they get hot at full brightness and won't work above 5VDC. They will burn out quickly at higher voltages.
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