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Your servo code is sprinkled with delay_us(xxxxx). Delay_us(xxxxx) locks up the processor so that it twiddles is thumbs waiting for the delay to end. You need some means of allowing the processor to ...

thanks so much for Mike Walne and asmboy...

I am totally not good in C programming, can you guide me how to use INTERRUPT? since I've ever learnt with assembly langguage in Motorola 6811, but i nev ...

Hi, I am using PIC18f4550 to control servo motor and dc motor. At first, I testing one by one, they are working well, but when I require to combine the coding together, I'm facing problem.

Either t ...

Hi,

Can someone guide me? I do not really understand how to use "goto_address()" and "return" if I require to jump to another function.

actually I need to jump from function ...

Now my main problem is, no matter how i set the range for the heading degree...for example: if(000<=heading<=180), then follow by if(181<=heading<=359)...

It may just read the data in & ...

Thanks so much for guiding me...

to temtronic,

Before this, I have ever tried to test the compass solely, it worked ok..
but when I added up with servo motor coding, the heading degree shown in ...

I really cant find out the problems, before this, I have try to test the servo motor by using the simple coding below, but it seemed to be working...

#include <18F4550.h>
#fuses HS, NOWDT, ...

Hi, I am trying to control the servo motor turning base on the heading degree from compass module. Now I did for testing purpose first, but it did not work on my servo motor. Below is my coding:

...

Now my servo can be turning after changing to the delay_us..Thanks..^.^

Thanks your reply..

I checked from its datasheet, when send the pulse 1.5ms, the servo supposes rotating to neutral point. 1ms for anticlockwise, 2ms for clockwise.

I use 5V (Vdd) from PIC since ...

Hi, I am doing my testing on a RC servo motor.. I understand that to turn the servo motor either -45degree, 0degree and 45degree is based on the PWM signal send to the servo motor.

I am using PIC18 ...

Thanks informing...i really mistyped with 1 but actually is l...
actually I followed the previous post message from this ccs forum, and also intend to try this testing..

actually i did not really ...

Hi.
I have a little problem I'm not able to solve on the coding. Hope the experts here can help me.

Below is my one part of coding:

void main()
{
int16 heading;
while( ...

I changed a bit the coding into the void main(), it can be compiled. Motor can run too. But two motors can't run simultaneously.

I've checked the output voltage in output of L293D, i supply to DC ...

Hi... Before this, I had tested the LCD 16x2 and it can be done successfully with the experts' helps from here. Thanks a lot.

Now, I'm testing the dc motor with PIC18f4550 with the coding below wi ...