Tips for Sensor Programming and Testing

[EricEnsor]

Would anyone have any tips for sensor programming and testing? We're trying to find the Optical sensor line tracking. Would anyone know to do this?

[ttedrow]

The optical sensors are digital (On/Off) devices. Wire them up to Robot Controller and sent the output to the Operator Interface LED

example:
out8 = rc_sw1 'optical sensor 1 wired to switch 1
out9 = rc_sw2 'optical sensor 2 wired to switch 2

Now you can see what the robot is seeing

Tim Tedrow

[rust710]

Line tracking is very simple. I can do it with one sensor and 5 lines of user code added to the default code. I hooked the white wire to rc_sw1(port one on the Digital Inputs) and used this code.

if rc_sw1 = 0 then
PWM1 = 137
PWM2 = 90
else
PWM1 = 90
PWM2 = 137
endif

This is the simplest way I can think of to do line tracking. The only problem is it is slow and it can lose the line with a bump or the sensor not reading right. I would recommend using at least two sensors to follow each side of the line.

Hope this helps.

[Ian W.]

make sure there is contrast between the floor and the tape (or whatever you're tracking). i've tried a simple program, but it doesn't work because of that reason. i think i've found a floor that works now though .