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Recent content by tschen

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    How to find out the properties of FR4 in 2.45GHz receiver design?

    Hi, Currently designing a 2.45Ghz receiver and was wondering what is the Er and loss tangent with height=1.6mm and thickness=0.03mm FR4? How is it possible to find out? All replies are much appreciated.Thank you in advance!
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    eZ430-RF2500 RF link through SPI

    ez430-rf2500 spi Anyone has got example codes for RF link between through SPI which acts as a end device and access point like the sensor monitor example provided with the development kit? Thanks a lot for any help contributed. :D
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    How to check transmit valid???

    How can i check that my transmitter(TLP434) is transmitting data besides connecting to a o'scope. I'm connecting the TX to an encoder(HT12E) chip and controlling data transmit using PIC16F877A.
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    Transmitter/Receiver delay subroutine using TMR0

    ;2.5s DELAY DELAY1: CLRF TMR0 ;START TMR0 LOOPA MOVF TMR0,W ;READ TMR0 INTO W SUBL .9766 ;TIME - W BTFS STATUS,Z ;CHECK TIME - W = 0 GOTO LOOPA RETLW 0 ;RETURN AFTER TMR0=>(1MHz/256)...
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    Laipac TLP434&RLP434 HELP with assembly codes?

    I need help with the connection to PIC16F877A and also .asm codes to transmit and receive data??? help needed urgently..........!!!!
  6. T

    Manchester encoding/decoding???

    What exactly is this method of encoding/decoding? Is there any .asm code examples for tx/rx modules from laipac??? I'm using TLP434A and RLP434.
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    Keypad,LCD,Transmitter???? HELP NEEDED URGENTLY

    If i use the UART,is it still necessary to connect my TX module to a HT12E encoder chip? Have you written the codes in assembly before? I'm a beginner in PIC programming. Can you help me with the codings?
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    Keypad,LCD,Transmitter???? HELP NEEDED URGENTLY

    Hmmm!Is there any other alternatives??? Is it poosible to use the TMR0 interrupt to generate the pulses? Or is it easier to use the UART on the PIC?
  9. T

    Assembly/Basic for keypad scanning and LCD

    assembly keypad scanning for PIC16F877A. Help me with the coding please
  10. T

    Assembly/Basic for keypad scanning and LCD

    keypad scanning Codes needed for interface keypad and LCD using either assembly/BASIC.
  11. T

    Assembly Programming for tx(TLP434A) & rx(RLP434)!!!! UR

    tlp434a How can i program to generate the signal pulses for the tx/rx module using a 4Mhz clock? I'm using assembly programming.
  12. T

    Keypad,LCD,Transmitter???? HELP NEEDED URGENTLY

    lcd transmitter How is it possible to connect the transmitter module(TLP434A) from laipac to the PIC16F877A? And how can i program the PIC to generate pulses using a 4Mhz external clock?
  13. T

    Interface keypad,LCD and transmitter!!! HOW?

    How can i get input from keypad display it on LCD at the same time send the data from keypad to the transmitter ? help needed urgently.
  14. T

    Keypad,LCD,Transmitter???? HELP NEEDED URGENTLY

    serial communication keypad How do i capture input from keypad display it on LCD at the same time send the captured data and send the signal to my transmitter??? I'm using PIC assembly language. Help with coding needed urgently.
  15. T

    Interfacing keypad,LCD and RF wireless transmitter module

    Re: Interfacing keypad,LCD and RF wireless transmitter modul I was wondering if there is any other encoder/decoder chip that works the same as Holtek 12D and Holtek 12E??? I need other substitution for the chip urgently.

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