I would like to use two (or more) 1838 IR sensors, to be able to read a (TV?) remote control for controlling my project.

The reason I want two or more is that I want to be able to point at the device from multiple directions.

I checked on some websites and it seems it is quite hard (on an Arduino) to use more than one of them. I'm not sure if I will make it on an Arduino or STM32 yet. But I wonder if there is some circuit to 'combine' them together, so I can use only one pin (not for saving a pin, but not having to check multiple sensors)... is there such a circuit and how would it look like?


1 Answer 1


The modules almost always have open collector type output, so the outputs can just be wired together.

  • \$\begingroup\$ Thanks for this info; good to know. \$\endgroup\$ Commented May 28, 2019 at 13:53
  • \$\begingroup\$ It should be possible to create the "wired OR" with these sensors. The datasheet shows active-low open collector output (see section 4). \$\endgroup\$ Commented May 29, 2019 at 1:25

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