How to interface GPS with PIC18F4550 Microcontroller

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This topic has 5 replies, 3 voices, and was last updated 13 years ago by AJISH ALFRED.

Viewing 6 posts - 1 through 6 (of 6 total)

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March 30, 2012 at 3:53 am #1539

jack
Participant

hello…i’m doing the same thing…but the LCD keep no showing any~ what the problem??? izit programming or circuit problem?? thanks for help…

http://www.engineersgarage.com/embedded/pic-microcontroller-projects/gps-interface-circuit

March 30, 2012 at 9:10 am #7356

nikhiljain
Participant

It should be problem with the circuit that you have made. Try to find the problems with your project.

April 2, 2012 at 3:01 am #7379

jack
Participant

how to test any communication in between the rs 232….

April 21, 2012 at 2:22 am #7526

jack
Participant

facing problem..

lcd show null character

April 21, 2012 at 2:24 am #7527

jack
Participant

wysiwyg_imageupload:4450:

April 27, 2012 at 6:27 pm #7561

AJISH ALFRED
Participant

I can see from the picture that your lcd not even get initialized. Check all the pin connections of lcd. Check the voltage on R/W pin, it should be zero. Also adjust (reduce) the contrast by adjusting the variable resistor connected to pin3. Try increasing the delay slightly wherever it is used.
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