Here is my schematic so far for my solenoid driver board. The PWM control took up too much space to include on the board due to the limitations of EagleCad's freeware. Each control circuit has two inputs, one for the trigger and one for the PWM power control. I might add in a way to disable the single pulse generator so that you can just trigger it on or off if there is room on the board. However, I can only think of a few instances that would require it as most solenoids will burn out if left on too long. I will post the EagleCad files including the board layout when I am finished.
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