Tuesday, April 23, 2013
Voice Activated Home Automation
Voice recognition is no
longer in infancy, especially since Siri just launched on the new
iPhone 4S (although similar technology is available on Android too.
This project shows you how to use it to automate your home without
spending big bucks.
The
core of this project is a VRBot speech recognition module. Next, the
project creator used some low-cost wireless light switches (you could
also use relays). The VRBot speech recognition module recognizes 32
custom voice commands. Once a command is recognized, a wireless
switch is activated via a radio receiver. The setup is simple after
you spend some time understanding the wireless communication protocol
between the different modules.
Automobile White crystal rectifier lightweight
Without any devoted buck converter/white crystal rectifier forcer IC, youll protectedly force several regular Hi-efficient white crystal rectifier modules victimization the battery power available in the market in automotives. Here could also be a protected and straightforward white crystal rectifier pressurer designed for 12V automobiles.
Auto White LED Circuit Schematic
In the Automobile White crystal rectifier wiring, fixed transformer IC1 (7805) gives a gentle voltage of 5V throughout C2. Resistors R1 limits the present drift in the course of the white crystal rectifier D1 (3v6/350mA) with the lend a hand of semiconductor T1 (and T2), i.e. sections R1, T1 (and T2) supply a relentless current to D1. Use a good sink for T1. This crystal rectifier unit provides a relentless light-weight output for enter voltages ranging from eight to eighteen volts!
Track Your Distance Through a Bicycle Odometer
Just like automotives that measures the gap it may presumably go again and forth, that you may also do it with your bicycles. We usually maintain observe of our mileage to peer how a manners our strength can go but would it be of serious use if we track it as a end result of we are maintaining a exercise on an ordinary basis bearing in thoughts the calories we're burning.
If you need to make your personal odometer, you're going to want a micro controller that generates pulse and a MOSFET that converts these voltage pulses. Just remember to test your batteries all the time.
The absolute best approach of burning energy is to maneuver those muscle tissues everyday! Set your bikes and your odometer! Burn fatss!
The absolute best approach of burning energy is to maneuver those muscle tissues everyday! Set your bikes and your odometer! Burn fatss!
Thursday, April 11, 2013
Video Out Coupling
If you want to connect a video signal to several destinations, you need a distribution amplifier to match the 75-ohm video cable. A distribution amplifier terminates the incoming cable in 75 ohms and provides several outputs, each with 75-ohm output impedance. Since this is usually achieved by putting a 75-ohm series resistor in the output lead of each video opamp (current-feedback amplifier), the opamps must be set up for a gain of 2 in order to achieve an insertion gain of 1 (0 dB). The disadvantage of this arrangement is that if the amplifier or its power supply fails, no signal is available at any of the outputs. This can be remedied by using a high input impedance amplifier, which can be tapped into a video line without having to have its own 75-ohm termination resistor.
In order to eliminate hum interference and voltage differences between the cable screen and the circuit earth, the circuit exploits the common-mode rejection of the opamp. This can be optimized with resistor RG1. With the indicated LT1396 video opamp, more than 40 dB of common-mode rejection can be achieved. The signal bandwidth of the circuit can be optimized using the trimpots. It reaches to more than 10 MHz, which is quite acceptable for video signals. Thanks to the high-impedance connection to the video line, the video signal is not affected when the power for the coupled amplifier is switched off. You can learn more about the LT1396 from its data sheet at http://www.linear-tech.com.
[read here...]
In order to eliminate hum interference and voltage differences between the cable screen and the circuit earth, the circuit exploits the common-mode rejection of the opamp. This can be optimized with resistor RG1. With the indicated LT1396 video opamp, more than 40 dB of common-mode rejection can be achieved. The signal bandwidth of the circuit can be optimized using the trimpots. It reaches to more than 10 MHz, which is quite acceptable for video signals. Thanks to the high-impedance connection to the video line, the video signal is not affected when the power for the coupled amplifier is switched off. You can learn more about the LT1396 from its data sheet at http://www.linear-tech.com.Monday, April 8, 2013
Fuse Box Chevy Tracker Under The Dash 2001 Diagram
Fuse Box Chevy Tracker Under The Dash 2001 Diagram - Here are new post for Fuse Box Chevy Tracker Under The Dash 2001 Diagram.
Fuse Panel Layout Diagram Parts: power window, dome light, license plate light, marker light, instrument panel illumination, hazard light, sensor heater, cruise control, ignition coil, meter, G sensor, cigar lighter, power mirror, door lock, brake light, horn, center high, mounted stop lamp, rear window defogger, turn signal, back up light.
[read here...]
Fuse Box Chevy Tracker Under The Dash 2001 Diagram
Fuse Panel Layout Diagram Parts: power window, dome light, license plate light, marker light, instrument panel illumination, hazard light, sensor heater, cruise control, ignition coil, meter, G sensor, cigar lighter, power mirror, door lock, brake light, horn, center high, mounted stop lamp, rear window defogger, turn signal, back up light.
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