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  1. J

    Open and close curtains a simple circuit

    I want to make a 555 circuit open and close some curtains. It has to open them at 6am and close them at 10pm Though I have heard 555 circuits are not very accurate for long periods of time, so the solution is to use a plug in wall style timer that activates at 5:45am and again at 9:45pm. When...
  2. J

    Wiring in a monostable 555 timer trigger to a car ignition

    I managed to get a relay from Maplin. It temporarily touches when the ignition is turned on, effectively acting as a push button switch. Works :)
  3. J

    Wiring in a monostable 555 timer trigger to a car ignition

    I'm thinking perhaps a transistor would work.
  4. J

    Wiring in a monostable 555 timer trigger to a car ignition

    I have made a monostable 555 timer circuit that will light a 12v LED for about 5 seconds and then turn off. The only problem is I don't have a trigger. I want the circuit to activate when I get 12V on one of my ignition wires. Is there a simple way to do this? Thanks any thoughts are...