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This is a Led can connect to 220Vac to 240 Vac. This is solution for simple to application Led for Home. This Led is very simple to use and install. but you must be careful because it use high voltage. its your own risk. To improve protection against surge, two pairs of identical resistors connected in parallel are symmetrically added to the LED so that total equivalent resistance, the sum of R1 and R2, is equal to the selected value in p.7.

Datasheet pdf

High Power Led 11.8 Watt

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Z-Power series is designed for high current operation and high flux output applications.
Z-Power LED’s thermal management perform exceeds other power LED solutions.
It incorporates state of the art SMD design and Thermal emission material.
Z Power LED is ideal light sources for general illumination applications, custom designed solutions, automotive large LCD backlights

  • Super high Flux output and high Luminance
  • Designed for high current operation
  • Low thermal resistance
  • SMT solderbility
  • Lead Free product
  • RoHS compliant


  • Automotive interior exterior lighting
  • Automotive signal lighting
  • Automotive forward lighting
  • General Torch
  • Architectural lighting
  • Projector light source
  • Traffic signals
  • Task lighting
  • Decorative Pathway lighting
  • Remote Solar powered lighting
  • Household appliances

Source : www.elfa.se/elfa3~eu_en/elfa/init.do?item=75-605-64&toc=0

Wireless 8×8 RGB LED Matrix

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On the PC is running the processing application, obtained by integrating the “neorainbowduino_simple” example of the neorainbow-0.82 library, with the “Plasma” algorithm (taken from the examples of Processing: File -> Examples -> Topics -> Effects -> Plasma), which creates a 8×8 image.

This matrix of pixels is sent via serial port to the first of the two JeeNode’s on which runs a modified version of the Arduino firmware from the neorainbow-0.82 library.
This firmware variation allows the JeeNode ??to receive the bytes for the pixels’ RGB components in the image and send it via radio to the second JeeNode (using the RF12 library developed by JeeLabs, to easily use the RFM12B radio module).
The firmware on the second JeeNode allows it to receive the image from the first one, using the RF12 library, and send it to the Rainbowduino via I2C by the Wire library (included in the Arduino IDE).

Hardware components:
– A PC with Processing
– Two JeeNode
– A Rainbowduino
– An 8×8 RGB LED Matrix

Software/Firmware components:
– An application written in Processing (neorainbowduinoplasma.zip)
– The library neorainbow-0.82 which is composed of three parts:
+ A Rainbowduino firmware
+ An Arduino firmware
+ A Processing library
– The firmware for the two JeeNode’s (neoLed
tx.zip) (neoLed_rx.zip)

source : http://vimeo.com/22512765

16×2 LCD Display PIC18F2550

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This circuit using Two serial EEPROMs (24LC512) and a DS1631 temperature sensor are connected on a common I2C bus. The address conflict between the two EEPROMs is avoided by connecting one’s A0 pin to Gnd and others to Vcc. The 7-bit addresses of all three I2C devices are shown in the diagram. The two 10 K resistors are the pull-up resistors for the I2C bus lines. The SDA and SCL lines go to RB0 and RB1 pins of PIC18F2550, respectively.

The tutorial covers basic theory, stop / start conditions, addressing, data transfer, and acknowledgment plus illustrations. A couple of specific examples are given in the form of a 24LC512 serial eeprom, and a DS1631 digital thermometer complete with code.


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