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Search results: 391   Output: 61-70
  1. Create the mathematical inverse of an analog voltage by converting it to frequency and measuring the period. Jordan Dimitrov, Toronto, ON, Canada EDN A popular series of inexpensive distance sensors integrates an infrared emitting diode, a linear ...
    10-02-2013
  2. Ever wanted to control a tank with your phone? Well, here’s one way to make it happen (Figure 1). Figure 1. Bluetooth MSP430 Tank Parts: MSP430 Launchpad with MSP430G255 3 chip from Texas Instruments (TI). Wireless Bluetooth V2.0 RS232 TTL ...
    01-02-2013
  3. Mehmet Efe Ozbek, PhD, Atilim University, Ankara, Turkey EDN Piezoelectric buzzers find wide use in embedded systems for audible-signal generation. You can drive a piezoelectric element directly from a microcontroller’s I/O pins, but the ...
    31-01-2013
  4. This module integrates the sensor MMA7455L (produced by Freescale ), able to detect the movement on three axes, and then in every direction. The chip offers the possibility to select three different sensitivity ( 2g, 4g, 8g) and makes available, on ...
    28-01-2013
  5. This shield allows to connect an Arduino with DMX equipment (Figure 1). It implements the RS485 interface to adapt the electrical levels needed for DMX connection. This shield has been designed with flexibility in mind and allows the user to choose ...
    23-01-2013
  6. This project is about building a microcontroller-based digital room thermometer plus hygrometer that displays temperature and relative humidity on 4 large (1 inch) seven segment LED displays which adjust their brightness level according to the ...
    18-01-2013
  7. Igor Lovrić Few months ago, I got request to find some kind of solution to measure G-Forces in moving car. I found a lot of commercial products on net, but in my country it is little bit difficult to buy them, so I decided to make my own ...
    17-01-2013
  8. Part 1 - Theory and Schematic Operation of the board The operation of the board is very simple. After powering the board from a 3-5.5 V supply, the Enable (EN) pin must be pulled high to activate the IR sensor. Next, place the tip of your ...
    24-12-2012
  9. When I first built the Heart rate measurement through fingertip project, the infrared LED and photodiode used for finger photoplethysmography were actually from salvaged parts, and therefore, I could not provide specifications for them in the ...
    30-11-2012
  10. The thermocouple is a kind of the temperature sensors. It is inexpensive and the measureing range is very wide compared to thermisters or temperature sensor ICs. However because the output voltage is small and relativistic, the thermocouple ...
    26-11-2012
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