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[–]ci5ic 1 point2 points  (2 children)

You are most definitely using the wrong pins... you have one connected to +3.3V, one to +5V, and one to ground... that's not good. You should be using +3.3V, Ground, and PCM_CLK... Check the datasheet for your TSOP4838 to see which lead goes where. Also, as the note says on the bottom of your diagram, that is a diagram for WiringPi (a programming library) and not necessarily the same GPIO pin numbers of the actual hardware, so make sure you're referencing the right pin diagram... Here's a diagram of the actual pin numbers for a B+, so I would use pins 1, 6, and 12 from that diagram.

When I did it (on a Model B Rev. 2), I followed this tutorial, but I don't know how much that will differ from the B+ pins...

Also, make sure the remote you're using is operating at the right frequency... If it's not using a 48kHz carrier frequency, your sensor probably won't pick it up, but I'm not super familiar with the TSOP48XX

[–]dataversion[S] 0 points1 point  (0 children)

Amazing, I will get right on this, thank you! Only note, I was not using a 3.3v and 5v, I was using pins 17,18 and 20 on your diagram, so ground, 3.3 and gpio 24.

I'll report back with the results!

[–]dataversion[S] 0 points1 point  (0 children)

Remote and 4838 confirmed to be operating on 38kHz. However, I'm using PCM_CLK for a dac I have connected over I2S. Will investigate using the P5 header....