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Arduino Infrared Module Kit As Table Top Edge Sensor?

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in the video below i think the guy is using the arduino infrared module kit (link to ebay item below too)

i wanted to see if anyone here know if we can use this kit as edge detection. so my wall-e doesn't fall of the table.

in the video it shows that if even one sensor (either the transmitter or receiver ) go off the table the bot stops and reverses....

Can i assume the 2 sensors are always communicating the same voltage/value? and once that value changes (table is no longer there) the scrip command is to back up?

thanks in advance

ebay link to transmitter and receiver sensors


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Netherlands
#2  

This is not what you're looking for, those are 38Khz IR receivers for TV remotes etc.

I think this is more what you're looking for, they even output a analog signal based on the IR reflectance!

#3  

thanks for the heads up........how about this link

this is a transmitter and led......so this is essentially both pieces melted into one?

anywho this is what i found is this comperable to the one you pointed out?

linky!

Netherlands
#4  

Yes, that one looks fine, but there you have to adjust sensitivity on the board itself, not via software, looks like it also just outputs a ADC value.

#6  

to be able to adjust sensitivity on software, would the sensor have to be a digital vs analog?

thanks again for your help...

Mr. Netherlands

Netherlands
#7  

For software sensitivity you could also choose digital, but it would be much harder than analog because you'll have to measure time for a capacitor to discharge so i would go with the one i just sent to you, can't be that hard, 3 wires?

#8  

yeah maybe your right, im going to have to solder when i get the mp3 trigger and the wifi cam....

thanks man

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