Urgent!!!! Pic16f877 Adc - Electronic Circuits Projects Diagrams Free

preeste · 21st November 2007, 07:03 PM

hi there

i have build a line follower robot using the above mentioned pic...i am now in the process of trying to program it.....i have used 3 phototransistors as sensors that are connected to AN0, AN1 and AN3 of the pic.....how do i actually go about programming it so that i should keep reading the outpts of these sensors all the time? please help me....i need the code in C.

thanks a lot....

Diver300 · 21st November 2007, 07:32 PM

You need to:-

Set the analog input to AN0
wait the sampling time
Start the conversion
wait for the conversion to finish
read the value of AN0

etc for AN1 and for AN2

repeat

There is only one ADC converter, but it is very quick so the whole lot takes very little time.

I only have code in assembly language.

blueroomelectronics · 21st November 2007, 07:45 PM

Urgent usually means school assignment.

PS line followers usually use comparators not A/D.

preeste · 23rd November 2007, 06:50 PM

lol...it is actually not a project...just a little thing i decided to do but in like 2 days i go back to school and wont hae anytime for my line follower....so thought i would finish as soon as possible....i am using the pic16f877 and it just makes sense to use the adc....thanks diver300...that was helpfuk

blueroomelectronics · 23rd November 2007, 08:44 PM

In that case this site is helpful for budding robot builders.
http://www.robotroom.com/

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21st November 2007, 07:03 PM	(permalink)
preeste	Urgent!!!! Pic16f877 Adc hi there i have build a line follower robot using the above mentioned pic...i am now in the process of trying to program it.....i have used 3 phototransistors as sensors that are connected to AN0, AN1 and AN3 of the pic.....how do i actually go about programming it so that i should keep reading the outpts of these sensors all the time? please help me....i need the code in C. thanks a lot....

21st November 2007, 07:32 PM	(permalink)
Diver300	You need to:- Set the analog input to AN0 wait the sampling time Start the conversion wait for the conversion to finish read the value of AN0 etc for AN1 and for AN2 repeat There is only one ADC converter, but it is very quick so the whole lot takes very little time. I only have code in assembly language.

21st November 2007, 07:45 PM	(permalink)
blueroomelectronics	Urgent usually means school assignment. PS line followers usually use comparators not A/D. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

23rd November 2007, 06:50 PM	(permalink)
preeste	lol...it is actually not a project...just a little thing i decided to do but in like 2 days i go back to school and wont hae anytime for my line follower....so thought i would finish as soon as possible....i am using the pic16f877 and it just makes sense to use the adc....thanks diver300...that was helpfuk

23rd November 2007, 08:44 PM	(permalink)
blueroomelectronics	In that case this site is helpful for budding robot builders. http://www.robotroom.com/ __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com