vb.net barcode reader source code COMMANDING A ROBOT WITH INFRARED REMOTE CONTROL in Software

Draw QR Code JIS X 0510 in Software COMMANDING A ROBOT WITH INFRARED REMOTE CONTROL

16.3 COMMANDING A ROBOT WITH INFRARED REMOTE CONTROL
Recognizing Quick Response Code In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Drawing QR-Code In None
Using Barcode creator for Software Control to generate, create QR Code 2d barcode image in Software applications.
ally fairly straightforward. It s mostly a matter of connecting the pieces together. With your infrared remote control you ll be able to command your robot in just about any way you wish to start, stop, turn, whatever. Here are the major components of the robot infrared remote control system:
Scanning QR-Code In None
Using Barcode recognizer for Software Control to read, scan read, scan image in Software applications.
QR Code ISO/IEC18004 Printer In C#
Using Barcode encoder for Visual Studio .NET Control to generate, create Denso QR Bar Code image in VS .NET applications.
Infrared remote. Most any modern infrared remote control will work, but . . . the signal patterns they use vary considerably. You ll find it most convenient to use a universal remote control (about $10 at a department store). These remote controls can work with just about any make and model of TV set, DVD player, VCR, cable/satellite receiver/ decoder available on the market. Infrared receiver module. The receiver module contains an infrared light detector, along with various electronics to clean up, amplify, and demodulate the signal from the remote control. The remote sends a signal built from a pattern of on/off flashes of infrared light. These flashes are modulated at about 38 40 kHz to differentiate them from other infrared sources in the receiver s environment. The receiver strips out the modulation and provides just the on/off flashing patterns (which will be referred to as the signal or packet in this chapter). Computer or microcontroller. You need some hardware to decode the light patterns, and a computer or microcontroller, running appropriate software, makes the job straightforward.
Creating QR In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create QR Code 2d barcode image in ASP.NET applications.
Make QR Code 2d Barcode In VS .NET
Using Barcode generation for VS .NET Control to generate, create QR Code 2d barcode image in VS .NET applications.
Previous editions of the book described the Sharp remote control standard or protocol for the infrared signal, but in this edition, the Sony format will be used. The reason for changing to the Sony standard is the fewer number of bits that are used in the data transmission, the more definite difference between a 1 or 0 of the data, and the greater number of projects available on the Internet and in books that use it. Receiving the modulated signal is quite simple; there are a number of different remote control receivers available on the market, like the Sharp GP1U57X shown in Fig. 16-5. The receivers are very sensitive to electrical noise, so it is important to provide the 56 resistor, 47 F, and 0.1 F filter capacitors to the circuit as shown. Some older receivers are built into metal cans, which may require external grounding as shown in the diagram. The outputs are usually open collector, so a pull-up resistor, like the 10k one shown in Fig. 16-5 is required. When it comes right down to it, it really doesn t matter which protocol is used; they are all built around a similar data packet using the parts that are shown in Fig. 16-6. The first part is the leader and is used to indicate the start of the packet for Sony remote controls, this is 2.2 ms in length. The packet s data bits (12 in the case of the Sony protocol) start with a synchronizing pulse with the length of the low pulse being the bit value. The Sony data bits are either 0.55 ms (550 s) or 1.1 ms in length.
QR Code 2d Barcode Generation In Visual Basic .NET
Using Barcode encoder for VS .NET Control to generate, create QR Code 2d barcode image in .NET applications.
Code 128 Code Set C Encoder In None
Using Barcode maker for Software Control to generate, create Code 128 Code Set B image in Software applications.
16.3.1 A TYPICAL MICROCONTROLLER INTERFACE
Barcode Generator In None
Using Barcode creator for Software Control to generate, create barcode image in Software applications.
Code 39 Extended Printer In None
Using Barcode encoder for Software Control to generate, create ANSI/AIM Code 39 image in Software applications.
It might be intimidating at first to think about trying to receive and process remote control codes. In this and the next section, three different methods will be demonstrated and there are a number of ways that can be considered for use in a robot. The important
Making Data Matrix ECC200 In None
Using Barcode encoder for Software Control to generate, create DataMatrix image in Software applications.
Bar Code Generator In None
Using Barcode printer for Software Control to generate, create bar code image in Software applications.
REMOTE CONTROL SYSTEMS
Paint USPS POSTal Numeric Encoding Technique Barcode In None
Using Barcode drawer for Software Control to generate, create USPS POSTNET Barcode image in Software applications.
UPC - 13 Drawer In Objective-C
Using Barcode creation for iPad Control to generate, create European Article Number 13 image in iPad applications.
+5 vdc R2 56W
Create UPC-A In Visual C#.NET
Using Barcode creator for VS .NET Control to generate, create UPC-A image in .NET applications.
Painting Barcode In Java
Using Barcode generation for Eclipse BIRT Control to generate, create bar code image in BIRT reports applications.
C2 47 F
Drawing USS Code 128 In Objective-C
Using Barcode maker for iPad Control to generate, create Code 128 image in iPad applications.
Draw Barcode In None
Using Barcode creator for Microsoft Excel Control to generate, create barcode image in Excel applications.
C1 0.1
Encode EAN-13 In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create EAN13 image in ASP.NET applications.
Code 128 Code Set A Decoder In VS .NET
Using Barcode reader for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
+V Sharp GP1U57X (or Equivalent) Gnd
R1 10K Signal Output
Ground Strap Soldered to Case
FIGURE 16-5 The infrared receiver-demodulator requires relatively few external components that are primarily used to filter any noise out of the unit s power source.
aspects of the differences are the ability to differentiate between a 1 and a 0 and to determine when an invalid packet (part of it is lost or has been garbled) is received and then reject it. The first method is a brute force approach of timing the signals coming in.
' ' Sony Remote Control Receiver Operation Method 1 Read the Timing for Each Bit DO DO WHILE (InputPin = 1) : LOOP ' Wait for Signal to go Low i = 0: DO WHILE (InputPin = 0) : i = i + 1: LOOP ' Get Leader IF ((i > 2.0ms) AND (i < 2.4ms) THEN ' Look for Valid Leader j = 0 ' Use "j" to Count the Number of Bits RemoteCode = 0 ' Reset the Returned Value DO WHILE (j < 12) DO WHILE (InputPin = 1) : LOOP ' Wait for Synch to Finish i = 0: DO WHILE (InputPin = 0) : i = i + 1: LOOP ' Time Bit IF ((i < 0.45ms) AND (i > 1.3ms) THEN j = 100 ' Indicate Invalid Bit ELSE
Copyright © OnBarcode.com . All rights reserved.