This circuit is very interesting and useful electronics projects for everyone. This will help to open and close the curtains very easily by just pressing a switch. Circuit will control the motor connected to a pulley system, for closing and opening the curtains. This diy electronics project is very simple and easy for beginners. Here a stepper motor is used for opening and closing the curtains. Using the 4 switches present in the circuit we can operate the curtain from one place.
Working of automatic curtain opener circuit:
The main electronic components used are two ICs CD4013 and ULN2003. CD4013 IC consists of two D Flip-flops which can be in two states 0 or 1 and can store information. ULN2003 is a motor driver which is used for controlling the stepper motor in the circuit. In CD4013 first D flip-flop is wired for opening the curtain and other for closing the curtain. Switch S1 and S2 are connected to the first flip-flop. S1 is connected to the 6th pin (set) of CD4013. When we press switch S1, pin 6 goes high and get a high output through pin 1. As this pin is connected to the 2nd pin of motor driver ULN2003 it will drive the stepper motor in clockwise direction to open curtain. Pressing Switch S2 will reset CD4013 and it will make Pin 2 of ULN2003 also low. This will stop the stepper motor. For closing the curtain press switch S3, this is connected to the 8th pin (set) of CD4013. High output from 13th pin of CD4013 will make 7th pin of ULN2003 high and drive the motor in anti-clock wise direction. Now when curtain is completely closed press the switch S4 to stop the motor. So with the help of four switches in the automatic curtain opener electronics projects we can easily control our curtains from one place. This diy electronics project is very useful for electronics lovers to learn electronics.
Circuit Diagram of Automatic Curtain Opener
- 5.6K Resistor – 4
- 1K Resistor – 2
- CD4013 IC – 1
- ULN2003 IC – 1
- Stepper Motor – 1
- 0.1uf Capacitor – 1
This interesting project can be used also as mini projects for students. Easy to learn such projects will make students more attracted towards electronics. Field of electronics is very interesting if we learn it through experiments. Sometime failures may occur. But from failure we can learn a lot of things. Learning electronics by doing experiments will make a student perfect in electronics field. So these types of electronics projects are good to learn electronics.