 | | Re: Infrared Optosensors —Fred G. Martin
| | | | 1/2" is actually pretty good range for a basic reflectance sensor. try using them in the analog inputs -- you should get readings that let you read out to about 1". to get better than that, you need a modulated signal, like Pandit has described. (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
| | | | | | | | | | Re: Infrared Optosensors —Randy Sargent
| | | | | I've had pretty good luck getting up to around 2" by using a standard IR LED and standard IR phototransistor, modulating the IR LED in software, and looking at the analog value returned from the phototransistor like so: { int refl; led_on(); refl += (...) (26 years ago, 5-Jun-98, to lugnet.robotics.handyboard)
| | | | | | |
