Society of Robots - Robot Forum

Software => Software => Topic started by: jessman275 on September 28, 2009, 06:56:07 PM

Title: New to programming
Post by: jessman275 on September 28, 2009, 06:56:07 PM

So I purchased a Axon controller and started messing around with it. So far its works great.  I have looked around on the forums and have yet to find a topic about IR sensors and how they could control a motor or Solenoid. I have tried to program the controller by modifying some existing code and needless to say it didn't work.  I have purchased a IR sensors listed below

http://www.acroname.com/robotics/parts/R185-SINGLE-LINE-IR.html (http://www.acroname.com/robotics/parts/R185-SINGLE-LINE-IR.html)

I have used this type of sensor for data logging on cars before and had a great experience with it.

I would like to have the IR sensor pick up off a rotating object and activate a solenoid every time the white line comes around. I am very new to programming and have read many tutorials, but still haven't gotten the hang of it.

My Pseudo code looks like this
"
read IR sensor PORT,F1

if IR sensor detects line
   then activate relay on PORT E2 for 30ms

"
Can someone lead me in the right direction on how to solve this problem. If there is a tutorial out there that is similar to this that would help tremendously.

Thanks

Jesse

Title: Re: New to programming
Post by: Admin on September 29, 2009, 09:20:16 AM

Your pseudocode gets you 90% there.

Quote

read IR sensor PORT,F1

becomes:
value=a2dConvert8bit(0);
read this:
http://www.societyofrobots.com/axon/axon_function_list.shtml#adc (http://www.societyofrobots.com/axon/axon_function_list.shtml#adc)

Quote

if IR sensor detects line

if(value > 128)

Quote

then activate relay on PORT E2 for 30ms

read this:
http://www.societyofrobots.com/axon/axon_function_list.shtml#digital_output (http://www.societyofrobots.com/axon/axon_function_list.shtml#digital_output)
you'll also need a MOSFET to drive your relay

you'll also need this to turn off the relay:
else
   PORT_OFF(PORTA,6);


so summing it up:

Code: [Select]

while(1)
{
value=a2dConvert8bit(0);
if(value > 128)//depends on values you expect
    PORT_ON(PORTA,6);
else
    PORT_OFF(PORTA,6);
delay_ms(10);//prevent crazy fast oscillation
}