This circuit will open and close the curtain of your home and office just by pushing a switch. So with the help of this unique circuit, we do not need to move from one place to open and close the curtain. This circuit is used for household use, particularly for smaller doors and windows. Due to its small size and readily available components, it can be effortlessly fixed with a curtain. You can also provide power supply to the circuit with the help of adapter existing in the market.
This circuit is made up of two ICs named CD4013 and ULN2003 with few more easily available components.
CD4013 IC contains two self-governing D type flip flop on a single chip which exists in one of two states that is 0 or 1 and can store information. Each module is further capable of group of pin outs assigned as data, set, reset, clock input and a couple complementary output Q and 
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Working on this circuit is very easy to understand. Assemble the circuit properly and cross check the connection. In this circuit we are utilizing both the flip.
If you want to open the curtain just press switch S1 for some time. This will supply the voltage to pin 6 of IC1 (which is set pin) as one end of the switch is connected with power supply and when pin 6 goes high it will provide you the highest output at pin 1 of IC1 that is at Q output. Which in turn makes the pin 2 of IC2 also high and the geared motor connected at the output start revolving in the close wise direction to open the curtain. Now when the curtain is open properly or you want to stop the motor in between just press the switch S2 connected at pin 4 of IC1 which is reset pin and this is used to off or stop the stepper motor when the curtain in fully open or you want to stop in between.
A similar occurrence will happen if you want to close the curtain. Just press switch S3 for some time connected to pin 8 of IC1 which is also a set pin. Geared motor starts running in anticlockwise direction. Now when the curtain is close or you want to stop in between press the switch S4 to off the stepper motor. Therefore you can now open and close your curtain just by sitting in one place, without moving just by pressing the switch.