Discussion in "Project Doubts" started by    saxenanitesh    Mar 3, 2008.
Sat May 17 2014, 04:43 pm
555 is used to generate 38khz signal as tsop is not just an ordinary IR sensor. It has IR detector along with a demodulator circuit to remove 38khz carrier signal. Tsop cannot detect signal if it's not 38khz.

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