Hi all, I've designed a circuit that seems to work well, but I've overlooked one small thing. The circuit controls two solenoid valves. A signal triggers a monostable multivibrator which converts that pulse to a longer pulse. As is stands right now, a button is pushed and the output signal turns on both valves for 300ms. What I need to have happen is this. I push a button and valve one turns on for 300ms and then after the 300ms, valve 2 turns on for more than 300ms. What sort of circuit element do I need to insert to delay the signal to valve 2? You can think of it as an arm throwing a ball. Valve 1 makes the arm move, and valve 2 lets go of the ball so to speak, without closing too soon.