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Projects › Projects › Some question about the project “bidirectional visitor counter using IR sensor”
I have some question about the project “bidirectional visitor counter using IR sensor” which are found in the following link:
1. I would like to know what is the part number of the IR transmitter (LED) and the IR receiver?
2. In the video I found the IR transimtter and the IR receive placed together, are there using a mirror for the reflection? And how long of the effective distance?
Thanks
pwleung
hello leung,
it says the page not found, can past the (proper) link again