I have been using the 2n2222 for all my power control on my controller with no problem, but those LPF drivers nearly got my controller launched out the window!
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View my Aquarium & Reef Controller build here:
The Ultimate DIY Aquarium Controller of the 21st Century!!!
LED's, PH, Salinity, Clock, LCD, ATO, Auto Water Changer, Variable Speed Cooling Fan Control and lots, lots more......