I’m making an IR proximity sensor for a home automation project. Since i need at least 60cm - 70cm range, i decided to use one of the the IR proximity receivers that use 38Khz IR signals. I have already bought some TSAL6100 IR emitter LEDs for this purpose and am gonna pulse them at 38Khz.
I wanted to know which IR sensor, TSSP58P38 or TSSP4P38 is better for the job or is more stable. I couldn’t really find any difference between these after looking at their datasheets (I’m not an expert at this so please let me know if I’ve missed out some obvious differences)
So what is the difference between them? Which would be better to use as a proximity sensor (based on their sensitivity, detection range etc)?
Also if there are any other IR proximity sensor that gives a pulse width modulated output that could be used for this purpose, please let me know! (I need some sort of pulse width or analog output as i would like to get a rough estimate of object’s distance from the sensor) Thank you so much