The arduino will be powered with the same power supply as the darlingtons will,
The darlingtons are not powered at all, as I said they pull down, that is they connect a load to ground. This is called sinking current.
The arduino will be powered with the same power supply as the darlingtons will,
The darlingtons are not powered at all, as I said they pull down, that is they connect a load to ground. This is called sinking current.