Showing posts with label home. Show all posts
Showing posts with label home. Show all posts

Wednesday, November 12, 2014

Remote Operated Home Appliances Circuit

Here is the circuit diagram of Remote Operated Home Appliances or Remote controlled Home appliances. Connect this circuit to any of your home appliances (lamp, fan, radio, etc) to make the appliance turn on/off from a TV, VCD, VCR, Air Conditioner or DVD remote control. The circuit can be activated from up to 10 meters. It is very easy to build and can be assembled on a veroboard or a general-purpose PCB.

Circuit diagram:

Remote Control For Home Appliances

Parts:

R1 = 220K
R2 = 330R
R3 = 1K
R4 = 330R
R5 = 47R
C1 = 100uF-16V
C2 = 100nF-63V
C3 = 470uF-16V
D1 = 1N4007
D2 = Red LED
D3 = Green LED
Q1 = BC558
Q2 = BC548
IR = TSOP1738
IC1 = CD4017
RL1 = Relay 5V DC

Circuit Operation:
The 38kHz infrared rays generated by the remote control are received by IR receiver module TSOP1738 of the circuit. Pin 1 of TSOP1738 is connected to ground, pin 2 is connected to the power supply through R5 and the output is taken from pin 3. The output signal is amplified by Q1. The amplified signal is fed to clock pin 14 of decade counter IC CD4017 (IC1). Pin 8 of IC1 is grounded, pin 16 is connected to vcc and pin 3 is connected to D2 (Red LED), which glows to indicate that the appliance is ‘off.’

The output of IC1 is taken from its pin 2. D3 connected to pin 2 is used to indicate the ‘on’ state of the appliance. Q2 connected to pin 2 of IC1 drives relay RL1. D1 acts as a freewheeling diode. The appliance to be controlled is connected between the pole of the relay and neutral terminal of mains. It gets connected to live terminal of AC mains via normally opened (N/O) contact when the relay energizes. If you want to operate a DC 12 volt relay then use a regulated DC 12 volt power supply for DC 12 volt Relay and remember that the circuit voltage not be exceeded more than DC 5 volte.
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Thursday, September 18, 2014

Simple Home Alarm System Home Alarm System

Simple Home Alarm System

This Home Alarm System is simple, secure, fast and cheap. Its only few components with maximum security with Rolling Code TX and Shock Sensor with variable sensitivity. The alarm module can be assembled in only 2 hours and it dont need manual preset.



Home Alarm System with this characteristics is the most cheap system and the total cost could be reduced using a normal external sounder (escl. AG8).GSM module will be add in the future for a remote control.

The blue led connected to the pin RA3 of micro controller is used like a memory to know if the home alarm system has been activated by an event and its reset after a reactivation. The red led connected to the power supply before the 1N5406 diode is used to check the power supply connection. Of course the other 3 micro led red near the relays are used to check the output state.


Here you can download the last version of The Home Alarm System date 10 July 2007:
  • source
  • binary (hex)
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Tuesday, September 2, 2014

Box Kit Home Theaters

Box Kit Home Theaters | We live in a world where convenience is increasingly growing in demand. For this reason many home theater buyers expect convenience when it comes to the purchase and set up of their home theater systems. It goes without saying that there are all kinds of consumers in the world and even in matters of convenience supply and demand have not emerged to create a one size fits all society. We all want similar things in many ways yet we still want autonomy and selections from which to choose.


Box

The demands of a society that likes the ease of buying prepackaged goods have reached such a point however that packages are common place in everything from prepackaged dinners to prepackaged home theater systems. On one level these types of prepackaged theater systems provide a great deal of convenience to consumers. Among those benefits is the ability to know the cost of the entire system up front. This is actually a small benefit when compared to some of the other benefits that consumers who purchase these systems experience.

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