Example Project 6 - IR Proximity Sensor

Lets imagine a cheap core for all your breadboard µC Projects.

Stefan-Xp • 11/05/2014 at 21:11•3 Comments

Have you seen some of the interactive LED tables? How awesome are they!?

The IR and IR Diode part is still strange to me :D

In fact i have no clue whit it is working... Last time it worked it had Analog Values between 0 and 60 (active) with Internal Reference (2.56V). Is it enough to work with? Do you have a better schematic proposition?

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davedarko wrote 11/05/2014 at 23:40

http://www.mikrocontroller.net/articles/Lichtsensor_/_Helligkeitssensor

Is it really ground on the bottom left? This way you would only get up to 0.7V ...compared to your reference that seems to be about right since you would also lose power over the resistor on the bottom right. Try vref on there and you should get a bigger resolution.

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davedarko wrote 11/06/2014 at 19:51

bump

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Stefan-Xp wrote 11/06/2014 at 21:14

Thank you.
Yepp its like i drew it. 825k is a big resistance, its nearly "Solar Cell Mode" :-D
Perhapps I try the second schematic soon :)
http://www.mikrocontroller.net/articles/Lichtsensor_/_Helligkeitssensor#Photodiode

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Example Project 6 - IR Proximity Sensor

Example Project 5 - 3x3x3 LED cube - New Thoughts

Example Project 7 - Christmas LED Tree

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