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. 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 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.curtains leongatha Want To Build A Motorized Window Blinds Controller For About $15.00? curtains orewaI enjoy having potted plants and watching them grow, but making sure they get enough light can be a challenge. curtains and blinds kottayamI have a bookcase in front of the window in my bedroom with several plants on the top shelf. telescopic shower curtain rail wilkinsons

The window faces north-east and opens onto a small patio so the plants don't receive any direct sunlight. Knowing this, I choose plants that don't require a lot of light. However, they do need some so I have always tried to keep the blinds open as much as possible. hills like white elephants symbolism beaded curtainMy problem is that I often have unexpected things come up in the evenings and don't always get home before dark. swish curtain track repairThat presents a problem. tension curtain rods vancouverI have several digital clocks, a nixie tube clock, and a couple of other light producing projects around my home. They are not visible from outside during the day, but at night they shine like bright beacons to the world through open window blinds.

I know this is a security risk and feel like having the blinds open after dark is like asking for problems. For a long time I just waited until I got home in the afternoons to open my blinds, but my plants suffered from a lack of light. They were not dying by any means, but they were not healthy, and their growth was severely stunted. I needed to find a way to open and close my blinds automatically when I was not at home. An automatic blind opener is not a new invention. They have been available for years. However, even the low end models cost in excess of a hundred dollars per window. Some models and styles can cost ten times that much. Most use IR remote controls. Other available activation options include timers, RS-232 interfaces, and light sensors. I needed a controller with a light sensor that would open my blinds in the mornings and close then in the evenings. However, I was not willing to pay what I thought was an unreasonable price for a simple light activated motor. Being the Maker that I am, I knew I could design and build what I needed and do it for a lot less money than what any commercial units cost.

Because I am a big fan of the versatile and inexpensive PICAXE microcontrollers, it was a given that I would design and build my window blinds controller around that chip. I decided to use the PICAXE -08M which is an 8 pin DIP with loads of features including several inputs and outputs, analog to digital converters, a pulse width modulatior, an IR transceiver option, and more features and extras than you would think would fit into its tiny package. If you have not used PICAXE microcontrollers before I would suggest purchasing the 08M starter pack for around $12.95. It comes with the micro controller, a software CD, a serial download cable, a proto board, a battery holder, and all the basic parts you need to get started with the PICAXE system.PICAXE 08M Starter Pack The PICAXE system was originally designed for educational use and is. It is an excellent system for beginners and experts alike. The PICAXE software is simple to learn and use. It uses simple Basic commands that are easy to understand because they actually make sense.

You even have the option of writing programs using flow charts. I usually start my projects using flow charts option and later convert them to Basic commands when I start tweaking the program. Best of all, the PICAXE software is freeware. You can download it and all of the manuals from the official PICAXE website.Official PICAXE Web Site I must admit that I got a little side-tracked in the beginning of this project. I decided to play around with the IR remote control options built into the PICAXE -08M. It was neat to use an old television universal remote control to open and close my blinds at will, but that did nothing to help solve my problem. I finally found my focus again and went to work designing this project. After several weeks of electronic hardware, software, and mechanical tweaking I finally came up this design. It is simple, easy to build, does a great job, and is just plain cool. If you have any spare or salvaged parts lying around you can build the whole thing for a lot less than $15.00.

If you have to buy everything you can still build this project for around $20.00 including the batteries. I really enjoyed designing, building, and tweaking this project and I learned a lot in the process. Now my plants get the light they need, my other projects are not shining through the open window blinds at night, and I feel better knowing the blinds will close at night whether I am there or not. *************************************************************** Be sure to check out the "Take it Further" ideas in step 12. They are sure to spark your imagination and make you want to fire up that old soldering iron and get busy on a truly fun and practical project. Step 1: The Parts You Will NeedShow All Items- PICAXE -08M Micro Controller, Spark Fun Electronics $2.95- ULN2003A Darlington Array, BG Micro #ICSULN2003 $.59- DPDT 5.0V Relay, BG Micro # REL1106 $1.29- Solarbotics GM3 Gear Motor, 224:1 6V, Maker Shed Store or Solarbotics $5.50- 3.5mm Stereo Jack, BG Micro #AUDCA017 $.36- 4 X 1.5V AA Battery Holder, BG Micro #BAT1068 $.79- Battery Snap (9V style)

, BG Micro #BAT1033 $.25- LM7805T 5.0V, 1A, Regulator, BG Micro #REG7805T $.40- Small Project Box, BG Micro #ACS1157 $1.95- Small Proto Board (2 3/8), BG Micro #ACS1433 $.89- 8 Pin Dip Socket, BG Micro #SOC1036 $.10- (2) 16 Pin Dip Sockets, BG Micro #SOC1038 $.08- Light Dependent Resistor, Radio Shack #276-1657 (5 pk) $2.99- (2) SPST Switches, BG Micro #SWT1043 $.20 for bothTOTAL $15.90You will also need the following items:- Resistors: 1 each of 10K, 22K, and 100K (>= 1/4 Watt)- Wire, solder, small bolts and nuts, Velcro strips RECOMMENDED SUPPLIERS:BG MicroBG Micro Web Site I am only a hobbyist and I don't spend a lot of money on projects, but the people at BG Micro have always treated me like I was their most important corporate customer. That kind of service is nearly impossible to find these days. Add that to their great parts selection and low prices and you have a winning combination.Maker Shed StoreMaker Shed Web Site I love checking out their stuff at Maker FaireYour own stash of surplus and salvage parts."