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Search results: 55   Output: 31-40
  1. This shield could be used as a stand-alone transponder key, or with Google’s servers to create a cloud-computing application. It’s time to present you an application with RFID. We want to show you how to use the popular Arduino to ...
  2. Jefferay Lawton, Microchip Technology Varactor (or “varicap”) diodes are used primarily in radio-frequency (RF) circuits to provide a capacitance that can be varied by changing the applied voltage. These types of diodes often are used ...
  3. Part 1 - How does RFID work, Whats stored on the card Part 2 - Schematic and PCB The software was next. Using the Arduino IDE, I implemented a simple menu system that allowed me to enter the relevant facility and CardID data directly from the ...
  4. Part 1 - How does RFID work, Whats stored on the card So the next step was to identify how to pretend to be a card - I wanted a card that I could type a card number into, so it had to have a microprocessor on it, was well as a keypad to allow the ...
  5. RFID projects have been pretty prominent recently, ranging from projects here in Instructables, to our local Silicon Chip magazine in Australia publishing a RFID door lock project in their November issue. Even I recently purchased a RFID door lock ...
  6. Part 1 - Schematic and Firmware Improving the emulator In the previous emulator schematic no inductance value has been defined.To improve the carrier reception - and therefore the reading distance -, the inductance and the capacitance should be ...
  7. When looking for a low frequency RFID emulator for security testing purposes, you can find several designs out there. However, their complexity can make you think twice before building one. Is necessary that complexity? In some cases you don't ...
  8. IC1: MAX2606 L1: 390nH Voltage Supply: 3 - 5V Frequency: 88 - 108MHz A simple FM transmitter links your home-entertainment system to a portable radio that can be carried around the house and into the back yard. For example, you can play music on ...
  9. RF Monolithics, AN0901 Introduction This application note presents a PCB reference design for RFM ’s TRC104 2.4 GHz transceiver IC. The reference design, including a PCB antenna, easily fits on one square inch of circuit board. Two RF ...
    Circuits » Wireless » RFM » TRC104
  10. mikroElektronika This week we are showing you how easily you can build your own home-made SMS alarm system, with minimum expenses. All you need to have is StartUSB for PIC Board , Smart GM862 with Telit GM862 module and antenna, one SIM card and a ...
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