Circuits & Schematics: Wire

1. 1-Wire Barometer. Part 1
   Circuits Measurement
   .. W. Bray This article describes details for constructing a 1-Wire Barometer which will work on a Dallas Semiconductor Corporation 1-Wire network. It differs from the popular ...
   10-01-2010

2. 1-Wire Barometer. Part 2
   Circuits Measurement
   .. printed circuit board. Not only is the printed circuit board designed to be modified for different voltage sources and 1-wire networks, but the values of the resistors can be modified for different ranges of barometric pressure and ...
   12-01-2010

3. 1-Wire Barometer. Part 3
   Circuits Measurement
   .. it on the spread sheet. Make another plot for U1A and the DS2438 by recording the input voltage at LM358 pin 3 and the 1-Wire output of the DS2438. Select the best linear range by examining the plots. Using this data with the Design ...
   04-03-2010
4. 3-Wire Serial LCD using a Shift Register
   Circuits Interfaces Microcontrollers Usage
   Rajendra Bhatt HD44780 based character LCDs require at least 6 I/O lines from microcontroller to display data. Therefore, they are not suitable for low-pin microcontrollers like PIC12F series microchips. In this project, I am going to show how to ...
   16-10-2010
5. 2-Wire Keypad Interface Using a 555 Timer. Part 1 Theory and Schematic
   Circuits Microcontrollers Usage
   Keypads are a very commonly used input device in microcontroller-based systems. In a keypad, multiple switches are arranged in rows and columns so that they could be interfaced to a microcontroller with a minimum number of I/O pins. For example, a ...
   25-03-2011
6. 2-Wire Keypad Interface Using a 555 Timer. Part 2 Frequency and Pulse outputs, Significance of Rp and Cp values, Role of Rc resistor
   Circuits Microcontrollers Usage
   Part 1. Theory and Schematic Frequency and Pulse outputs Click to enlarge There are two outputs in this circuit. One is the frequency output derived directly from pin 3 that is fed to the T0CKI (Timer0 input) pin of a PIC16F628A microcontroller for ...
   18-04-2011
7. 2-Wire Keypad Interface Using a 555 Timer. Part 3 Connecting to the PIC16F628A, Software, Demonstration
   Circuits Microcontrollers Usage
   Part 1 . Theory and Schematic Part 2 . Frequency and Pulse outputs, Significance of Rp and Cp values, Role of Rc resistor The two outputs from the keypad are connected to the PIC16F628A microcontroller. The pulse output goes to RA2 pin whereas the ...
   22-04-2011
8. Sense multiple pushbuttons using only two wires
   Circuits Interfaces Microcontrollers Usage
   .. For those applications, you can monitor multiple pushbuttons over a single pair of wires (Figure 1). The multichannel 1-Wire addressable switch DS2408 , IC1, provides PIO (input/output ports) P0 through P7, which in this application serve ...
   31-05-2011
9. Compensate for four-wire sensor errors
   Circuits Measurement
   .. resistance rises and the other falls. Accurate measurements with resistive sensors require compensation for losses due to wire resistance, especially when wire lengths are tens of meters. The compensation method in this Design Idea relies ...
   22-09-2011
10. Simple Circuit Interfaces 1-Wire Temperature Sensor To A Microcontroller
    Circuits Measurement Interfaces Microcontrollers Usage
    .. to their environments. Designers can add to the features offered by the circuit as well. The simple circuit interfaces a 1-Wire temperature sensor (DS18S20) to a Cypress microcontroller (CY8C26443). But the technique can be extended to any ...
    28-10-2012

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