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[INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT]                         April 20, 2012

FName-Surname Apichai Pansrisakoon
    Student ID. 53219003
   Group Name HAPPY 361 Degree
    Engineering 2A : Tong, Toey, Jip, Pui
 Team Members 2B : Path, Jame, Por, Kang, Note, Jimmy

 Product Design
                P’Katall, P’Klao, P’Earth, P’Chompu
 Team Members


Weekly Progress
     After, I studied what is Sony D7C5 Protocal and how is work. In this week I designed a circuit of
 remote transmitter and writing program in PIC16F877A to generate signal when got a signal in each
 input. First time in programimg I got a little problem, that is PIC16F877A dosen’t generate a signal
 when it get input signal already. I tried to solve this problem by debugger in compliler then I
 founded, I modify this code and tried to made it work immediately. Although I finished in
 programming I still had a problem in transmitter case.That is transmitter sent signal too short just
 5 cm., it’s closer than before gernerate signal. I measured output of microprocessor by used
 electical multi meter in VDC mode, I founded the voltage in output pin was droped and I realized I
 should to design a new IR driver part to amplify power of sending better. However, I’m still testing
 it right now and waiting for result.




                                                              Figure 2.Sony D7C5 Protocal

        Figure 1. Ex. Transmitter Circuit

Engineering Analysis
Strong Point
Right now, no longer a problem about programming in transmitter.


Week Point
When the outputs from microprocessor have a frequency, voltage will drop. I can’t control or solve it
right now. I’m still finding some how to make it work.

                                     Department of Control System and Instrumentation Engineering
                                        KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI
[INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT]                       April 20, 2012




Next Week Job
I will make receiver circuit and decoder a signal to finish.




                                       Department of Control System and Instrumentation Engineering
                                          KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI

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Weekly report1

  • 1. [INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT] April 20, 2012 FName-Surname Apichai Pansrisakoon Student ID. 53219003 Group Name HAPPY 361 Degree Engineering 2A : Tong, Toey, Jip, Pui Team Members 2B : Path, Jame, Por, Kang, Note, Jimmy Product Design P’Katall, P’Klao, P’Earth, P’Chompu Team Members Weekly Progress After, I studied what is Sony D7C5 Protocal and how is work. In this week I designed a circuit of remote transmitter and writing program in PIC16F877A to generate signal when got a signal in each input. First time in programimg I got a little problem, that is PIC16F877A dosen’t generate a signal when it get input signal already. I tried to solve this problem by debugger in compliler then I founded, I modify this code and tried to made it work immediately. Although I finished in programming I still had a problem in transmitter case.That is transmitter sent signal too short just 5 cm., it’s closer than before gernerate signal. I measured output of microprocessor by used electical multi meter in VDC mode, I founded the voltage in output pin was droped and I realized I should to design a new IR driver part to amplify power of sending better. However, I’m still testing it right now and waiting for result. Figure 2.Sony D7C5 Protocal Figure 1. Ex. Transmitter Circuit Engineering Analysis Strong Point Right now, no longer a problem about programming in transmitter. Week Point When the outputs from microprocessor have a frequency, voltage will drop. I can’t control or solve it right now. I’m still finding some how to make it work. Department of Control System and Instrumentation Engineering KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI
  • 2. [INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT] April 20, 2012 Next Week Job I will make receiver circuit and decoder a signal to finish. Department of Control System and Instrumentation Engineering KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI