control servo motor by using pic16F84A

[waterlee2000]

Include "modedefs.bas"
si var PORTA.0
pos var byte
servo var byte
cont var byte
trisb = 0
start:
serin si,N2400,servo,pos
for cont = 0 to 50
pulsout servo,pos
pause 15
next cont
goto start

this program just can clockwise only.... then how to write the anti anti clockwise program???

what the different between trisb=0 and trisb=%00000000 ???
what the above mean serin si,N2400 ,servo,pos?? can you explain

[Bruce]

See the lower section of this project page for info on how pulsout works to
control hobby servos http://www.rentron.com/Micro-Bot/IR_Nav.htm

[waterlee2000]

that is used by IRLED... my circuit and program as below... please help me check it and correct it... if can, explain to me... thanks... urgency

[waterlee2000]

that is used by IRLED... my circuit and program as below... please help me check it and correct it... if can, explain to me... thanks... urgency

[Bruce]

that is used by IRLED... my circuit and program as below... please help me check it and correct it... if can, explain to me... thanks... urgency

Look at the bottom of the page. It explains how to drive a servo with pulsout.

The example in your attachment should also work assuming you are sending a
servo # followed by a position from 100 to 200 as explained on the page
above when using a 4MHz osc.

[waterlee2000]

then... my lecture said that if you use this circuit, you better choice B because no need any declaration but make sure you program is in true language!!! can you help me check??? or what are you suggestion for this circuit?? A or B??

is it A using C language and B is using basic language??? i cannot understand C and basic, i thought both is C language!!! what the difference???

thanks...

[Melanie]

Both examples are in BASIC language (though each is slightly different), but unless you have the manual dexterity to accurately toggle S1 at 2400 baud, then example A will not apply.