Anyone using an arduino digital pin to directly drive an SSR? Most of the input currents for the 40A SSRs I'm looking at is 10-20mA. I think the arduino should be able to handle that. I'm trying to build a very minimal system that basically controls 2 heating elements and has 2 thermometers. Should I stop being cheap and lazy and use some transistors or can the Arduino directly drive these babies?
http://cgi.ebay.com/NEW-Solid-State-Relay-40A-SSR-40DA-3-32VDC-24-380VAC-/270653345266?pt=LH_DefaultDomain_0&hash=item3f04324df2
http://cgi.ebay.com/NEW-Solid-State-Relay-40A-SSR-40DA-3-32VDC-24-380VAC-/270653345266?pt=LH_DefaultDomain_0&hash=item3f04324df2