Gikfun Digital 38khz Ir Receiver Ir Transmitter Sensor Module Kit for Arduino (Pack of 3 Sets) EK8477

These units seem to work well. I’ve only used two transmitters and one receiver so far, but they’ve worked with an Arduino quite well (with a basic IR library).

Great little IR receivers. Wish the data sheet were clearer

Both the receiver and transmitter worked fine with my 3.3v ESP8266 NodeMCU board.I just connect the VCC, GND, DATA pins directly to ESP's 3.3v, GND, D5 (in my case) pins.Used the IRRemoteESP8266 library.The transmitter isn't terribly wide (Can't bounce off the ceiling like my remote can) but range of at least 5-10 ft... haven't tried farther.

I got 3 receiver modules and 3 emitter modules. I see no indication that the IR LEDs are emitting through my phone's camera. I tried the visible LED trick to check wiring, and even a visible LED is not driven by the board. it looks like the board's internal circuitry is incorrect and just does not fire the LEDs at all. (I do see the status indicator LED, though, so the board is receiving a signal.) Not only that, but attempting to direct drive the IR LEDs does nothing, so they are either all dead or require a lot more current than expected.In retrospect, I should have just bought a bag of IR LEDs and used resistors.The _receiver_ boards work flawlessly, though.

Worked exactly how I needed them to. Some. Of the IR LED's are mounted a tad bit skewed but nothing a little push couldn't correct.

Have only used the receiver. Easy connect to arduino uno. Captured TV remote signals with ease.

The receivers work flawlessly with an arduino uno, and I was able to record IR commands from a remote in a matter of minutes.The Transmitters were a different story. If you are trying to use them with an arduino, you will need to provide more power than the digital pins can provide. I put a transistor in front of them, and they are working well now, with the caveat that they only have about 4 ft of range in my current setup. I haven't spent time trying to increase the range further.As an aside, the transmitter has three pins, but the VCC isn't actually connected to anything as far as I can tell.

The receiver module works perfectly. The emitters on the other hand are pretty useless. The most range I have been able to get is 3 feet. I was hoping to use a single ESP based device to control my audio amplifier as well as my TV but being that they are about 6 feet apart that is impossible with this.I bought some other emitters that work much better. I will never buy these again. I see some people mention you need to supply more power to them but even at a full 5v in (bypassing the pins on the ESP) the IR range did not improve.So if you need more than 3 feet of range look elsewhere. I bought the seeed studio emitters and they work much better.